Re: no grub after installing fedora23

[Tim]

Allegedly, on or about 24 December 2015, Chris Murphy sent:
> What matters is prevention and what you're proposing is that people
> disable being protected against it. And that's bad advice. 

I tend to view such hazardous advice with more than just suspicion that
the person doesn't fully appreciate the situation, I'm concerned that
they might be a black hat trying to make it easier for their mates.

I think, that as a matter of security, you have to be suspicious of
"turn off your firewall/malware-protection/etc.," advice, as coming from
someone with ulterior motives, or coming from someone who's been
unwittingly conditioned by those with ulterior motives.

-- 


All mail to my mailbox is automatically deleted, there is no point
trying to privately email me, I will only read messages posted to the
public lists.

I'd just like to say that vinyl record crackles and pops are far less
annoying than digigigigital mu-u-u-u-usic hiccicicicups and
yooo-u tu-be ... pauses.



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Re: no grub after installing fedora23

[Gordon Messmer]

On Thu, Dec 24, 2015 at 2:50 PM, maderios  wrote:
>
> 'Secure boot' is just a windows problem. In Linux world, nobody uses 'Secure
> Boot'. In Windows world, they need it and they use it because Windows system
> is 'natively' insecured.


Nonsense.  Secure Boot secures Linux systems against rootkits, as
well, by prohibiting unsigned content in kernel mode.
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Re: no grub after installing fedora23

[Walter Cazzola]

On Thu, Dec 24, 2015 at 11:30 PM, Chris Murphy 
wrote:

> On Thu, Dec 24, 2015 at 3:15 PM, Walter Cazzola 
> wrote:
> > Hi,
> > thanks all for the help at end I missed to create a bootbios partion of
> 2MiB
> > once I added that the system booted. The strange point is that I didn't
> find
> > it explained in any tutorial but thanks to your advice I noticed that
> entry
> > in the filesystem menu.
>
> This is unexpected because BIOSBoot only exists on GPT. But Windows
> requires MBR on BIOS (legacy) systems, and GPT on UEFI systems. It's
> not possible to get it to do anything different. So if the
> installation is GPT, that suggests UEFI installation, and there should
> be an EFI System partition rather than BIOSBoot.
>
> The fact there is an extended partition, and boot flags in earlier
> reports, shows this is an MBR partitioned drive. Those things don't
> exist with GPT drives.
>

I don't know what to say, this is my current configuration:

 /dev/sda1  63  80324  80262  39.2M de Dell Utility
/dev/sda2  *81920   25710591   25628672  12.2G 27 Hidden NTFS WinRE
/dev/sda325710592  201408511  175697920  83.8G  7 HPFS/NTFS/exFAT
/dev/sda4   201408512 1953523711 1752115200 835.5G  5 Extended
/dev/sda5   201410560  201414655   4096 2M 83 Linux
/dev/sda6   201416704  2028830711466368   716M 83 Linux
/dev/sda7   202885120  307742719  10485760050G 83 Linux
/dev/sda8   307744768  358076415   5033164824G 82 Linux swap / Sola
/dev/sda9   358078464  372758527   14680064 7G 83 Linux
/dev/sda10  372760576  383246335   10485760 5G 83 Linux
/dev/sda11  383248384  393734143   10485760 5G 83 Linux
/dev/sda12  393736192  3968819193145728   1.5G  6 FAT16
/dev/sda13  396883968 1953523711 1556639744 742.3G 83 Linux

and for now the system boots correctly

Walter
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Re: no grub after installing fedora23

[Chris Murphy]

On Thu, Dec 24, 2015 at 3:15 PM, Walter Cazzola  wrote:
> Hi,
> thanks all for the help at end I missed to create a bootbios partion of 2MiB
> once I added that the system booted. The strange point is that I didn't find
> it explained in any tutorial but thanks to your advice I noticed that entry
> in the filesystem menu.

This is unexpected because BIOSBoot only exists on GPT. But Windows
requires MBR on BIOS (legacy) systems, and GPT on UEFI systems. It's
not possible to get it to do anything different. So if the
installation is GPT, that suggests UEFI installation, and there should
be an EFI System partition rather than BIOSBoot.

The fact there is an extended partition, and boot flags in earlier
reports, shows this is an MBR partitioned drive. Those things don't
exist with GPT drives.


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Re: no grub after installing fedora23

[Chris Murphy]

On Wed, Dec 23, 2015 at 4:32 AM, maderios  wrote:

> Why an extended partitition? It should a gpt partitioning with efi.

Nope, Windows 7 pre-installed. Dell enabled the CSM on those systems.
So it's got the faux-BIOS enabled and thus MBR is required. Windows 7
did support UEFI but it was crap so many vendors just opt to have the
CSM enabled.

Ideally he'd try to get a Windows 8.1 upgrade for free (?) and then
disable the CSM, sometimes perversely in the UI it's an option to
"enable UEFI" as if it's even possible to disable it.


Your
> 'Dell Precision m6800' uses uefi but you have not any efi partition
> http://www.manualslib.com/manual/563583/Dell-Precision-M6800.html?page=58
> For me, your install is wrong. First, You have to disable uefi secure boot
> in your bios, then install F23. Installer has to detect an efi partition
> like '/boot/efi'

OK please definitely stop suggesting people disable UEFI Secure Boot,
it's bad advice and it's not necessary, Fedora supports Secure Boot
just fine. On any system that has Secure Boot enabled with Windows on
it, *especially* this is bad advice as it exposes the user
unnecessarily to bootloader malware and that's not good. It's a huge
PITA to get rid of those.


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Re: no grub after installing fedora23

[Walter Cazzola]

Hi,
thanks all for the help at end I missed to create a bootbios partion of
2MiB once I added that the system booted. The strange point is that I
didn't find it explained in any tutorial but thanks to your advice I
noticed that entry in the filesystem menu.

Walter

On Thu, Dec 24, 2015 at 2:04 PM, maderios  wrote:

> On 12/23/2015 11:58 PM, Walter Cazzola wrote:
>
>>
>> On Dec 23, 2015 11:34 PM, "Doug H." > > wrote:
>>
>>  > As maderios has pointed out, this partitioning does not look
>>  > workable. I don't think you can toggle the boot flag on for an extended
>>  > partition.
>>
>> Ok tomorrow I'll redo the installation.
>>
>> But just to do the right thing since the beginning how should the the
>> disk be partitioned?
>>
>> Considering that the windows installation is split over three partitions
>> (sda1-3) that I won't touch and I would like to have
>> -/var
>> -/tmp
>> -/
>> -/home
>> - swap
>> -/opt
>> -/boot
>> - and a vfat partition to exchange data with Windows
>> On separate partitions.
>>
>> Also I don't know what this efi partition (that maderios is mentioning)
>> is and is for. And how I should create it.
>>
> If you want only one system, F23,  installed on hour hd, I suggest simple
> partitionning
> /dev/sda1 /boot/efi
> /dev/sda2 swap
> /dev/sda3  /
> /dev/sda4  /home
>
> If you want dual boot F23 + Windows, example
> /dev/sda1  /boot/efi
> /dev/sda2  W$
> /dev/sda3  W$
> /dev/sda4 swap
> /dev/sda5  /
> /dev/sda6  /home
>
>
> --
>
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Re: no grub after installing fedora23

[Chris Murphy]

On Thu, Dec 24, 2015 at 3:50 PM, maderios  wrote:
> On 12/24/2015 10:33 PM, Chris Murphy wrote:
>
>> Your
>>>
>>> 'Dell Precision m6800' uses uefi but you have not any efi partition
>>> http://www.manualslib.com/manual/563583/Dell-Precision-M6800.html?page=58
>>> For me, your install is wrong. First, You have to disable uefi secure
>>> boot
>>> in your bios, then install F23. Installer has to detect an efi partition
>>> like '/boot/efi'
>>
>>
>> OK please definitely stop suggesting people disable UEFI Secure Boot,
>> it's bad advice and it's not necessary, Fedora supports Secure Boot
>> just fine. On any system that has Secure Boot enabled with Windows on
>> it, *especially* this is bad advice as it exposes the user
>> unnecessarily to bootloader malware and that's not good. It's a huge
>> PITA to get rid of those.
>
>
> 'Secure boot' is just a windows problem. In Linux world, nobody uses 'Secure
> Boot'. In Windows world, they need it and they use it because Windows system
> is 'natively' insecured.

1. The OP says he's using Windows. And your advice for this Windows
user, was the disable Secure Boot. It's bad advice.

2. It's completely asinine to assert "nobody uses" Secure Boot in the
Linux world. Considering every new Windows 8+ preloaded computer has
Secure Boot enabled, and most every Linux distro supports Secure Boot
out of the box, it's just factually wrong to assert that no Linux
users use it. Of course they are. Tens of thousands are.

3. Bootloader malware takes control in the pre-boot environment.
That's what Secure Boot is designed to protect against. It hardly
matters how the system is infected. What matters is prevention and
what you're proposing is that people disable being protected against
it. And that's bad advice.



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Re: no grub after installing fedora23

[Chris Murphy]

On Thu, Dec 24, 2015 at 4:21 PM, Walter Cazzola  wrote:
>
>
> On Thu, Dec 24, 2015 at 11:30 PM, Chris Murphy 
> wrote:
>>
>> On Thu, Dec 24, 2015 at 3:15 PM, Walter Cazzola 
>> wrote:
>> > Hi,
>> > thanks all for the help at end I missed to create a bootbios partion of
>> > 2MiB
>> > once I added that the system booted. The strange point is that I didn't
>> > find
>> > it explained in any tutorial but thanks to your advice I noticed that
>> > entry
>> > in the filesystem menu.
>>
>> This is unexpected because BIOSBoot only exists on GPT. But Windows
>> requires MBR on BIOS (legacy) systems, and GPT on UEFI systems. It's
>> not possible to get it to do anything different. So if the
>> installation is GPT, that suggests UEFI installation, and there should
>> be an EFI System partition rather than BIOSBoot.
>>
>> The fact there is an extended partition, and boot flags in earlier
>> reports, shows this is an MBR partitioned drive. Those things don't
>> exist with GPT drives.
>
>
> I don't know what to say, this is my current configuration:
>
>  /dev/sda1  63  80324  80262  39.2M de Dell Utility
> /dev/sda2  *81920   25710591   25628672  12.2G 27 Hidden NTFS WinRE
> /dev/sda325710592  201408511  175697920  83.8G  7 HPFS/NTFS/exFAT
> /dev/sda4   201408512 1953523711 1752115200 835.5G  5 Extended
> /dev/sda5   201410560  201414655   4096 2M 83 Linux
> /dev/sda6   201416704  2028830711466368   716M 83 Linux
> /dev/sda7   202885120  307742719  10485760050G 83 Linux
> /dev/sda8   307744768  358076415   5033164824G 82 Linux swap / Sola
> /dev/sda9   358078464  372758527   14680064 7G 83 Linux
> /dev/sda10  372760576  383246335   10485760 5G 83 Linux
> /dev/sda11  383248384  393734143   10485760 5G 83 Linux
> /dev/sda12  393736192  3968819193145728   1.5G  6 FAT16
> /dev/sda13  396883968 1953523711 1556639744 742.3G 83 Linux
>
> and for now the system boots correctly

There is no BIOSBoot in that list though. And that list is using MBR
type codes. I'd say this listing is unreliable, I don't know the
source. Please post the complete, unedited listing from:

# parted /dev/sda u s p

That'll provide better info.



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Re: no grub after installing fedora23

[maderios]

On 12/24/2015 10:33 PM, Chris Murphy wrote:


Your

'Dell Precision m6800' uses uefi but you have not any efi partition
http://www.manualslib.com/manual/563583/Dell-Precision-M6800.html?page=58
For me, your install is wrong. First, You have to disable uefi secure boot
in your bios, then install F23. Installer has to detect an efi partition
like '/boot/efi'


OK please definitely stop suggesting people disable UEFI Secure Boot,
it's bad advice and it's not necessary, Fedora supports Secure Boot
just fine. On any system that has Secure Boot enabled with Windows on
it, *especially* this is bad advice as it exposes the user
unnecessarily to bootloader malware and that's not good. It's a huge
PITA to get rid of those.


'Secure boot' is just a windows problem. In Linux world, nobody uses 
'Secure Boot'. In Windows world, they need it and they use it because 
Windows system is 'natively' insecured.


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Re: no grub after installing fedora23

[Chris Murphy]

On Tue, Dec 22, 2015 at 5:23 PM, Walter Cazzola  wrote:
> Dear Fedora Experts,
> I' ve recently bought a new Dell Precision m6800 and today I was trying to
> install Fedora 23 in dual boot with windows 7 (this was the OS originally on
> the machine).
>
> I' ve run the installer from the live CD and after a couple of wrong
> attempts I successfully finished the installation process without errors or
> at least apparently without errors.
>
> I' ve restarted the machine I got into the following error message:
>
> file "/boot/grub2/i386-pc/normal.mod" NOT FOUND
> grub rescue>

That is a bootloader file, and it's a binary that's only ever found on
computers with BIOS firmware. On computers with UEFI firmware, it's
not needed.

So if this m6800 has UEFI, it must have legacy boot enabled... oh hell.


> neither windows nor fedora boot.
>
> Booting again from the live cd I got that ever the partition are there:
>
>
> Device Boot StartEndSectors   Size Id Type
> /dev/sda1  63  80324  80262  39.2M de Dell Utility

This is a huge red flag. Can you boot off live media, connect to wifi
if supported out of the box, or plug in an ethernet cable and run:

# parted /dev/sda u s p > parted.txt
# fpaste parted.txt

And  you'll get a URL you can post. Like this: http://ur1.ca/ocxjd

I want to know if this is GPT or MBR and what the physical sector size
is, because LBA 63 on a 512e AF drive is bad news performance wise and
some companies did do this for a while including Dell and it's just...
really f'n annoyingly incompetent. I do have a work around that's
rather tedious but we get to that later.

If you're feeling brave, it's semi worthwhile poking around the
firmware setup (probably F2) to see if you can find the words Secure
Boot. I'm curious if this firmware supports it or not. Don't change
the setting, I just want to know if you can find it or not.




> /dev/sda2  * 81920   25710591   25628672  12.2G 27 Hidden NTFS WinRE
> /dev/sda325710592  201408511  175697920  83.8G  7 HPFS/NTFS/exFAT
> /dev/sda4   201408512 1953523711 1752115200 835.5G  5 Extended
> /dev/sda5   201410560  2027765751366016   667M 83 Linux
> /dev/sda6   202778624  307636223  10485760050G 83 Linux
> /dev/sda7   307638272  341192703   3355443216G 82 Linux swap /
> Solaris
> /dev/sda8   341194752  351680511   10485760 5G 83 Linux
> /dev/sda9   351682560  3600711678388608 4G 83 Linux
> /dev/sda10  360073216  3684618238388608 4G 83 Linux
> /dev/sda11  368463872  3716095993145728   1.5G  6 FAT16
> /dev/sda12  371611648 1953523711 1581912064 754.3G 83 Linux
>
> where sda1-3 are the original windows partitions, sda5 is /boot and sda6 is
> /
>
> I' ve mounted the /boot partition and inside grub2 there is not i386-pc dir
> nor the normal.mod file. I' ve tried to manually copy
> /usr/lib/grub/i386-pc/normal.mod into /boot/grub2 but the only difference I
> got is that the boot is stucked on
>
>   grub>
>
> So what I have to do to fix the situation and be able to run both windows
> and linux?
>

The easiest way to fix this and not change anything or reinstall? Is
to download netinstall media, ~400MB download. And change the boot
parameter line (use the tab key to show the boot param line at the
boot menu) and add at the end, inst.rescue. Choose the default option
in each, it should find all the parts of the system and assemble them
at /mnt/sysimage. Then you can do:

# chroot /mnt/sysimage
# grub2-install /dev/sda5 --force
# grub2-mkconfig -o /boot/grub2/grub.cfg

And then reboot. What I'm virtually certain has happened is because
partition 1 starts at LBA 63, and because Fedora defaults to using
LVM, the GRUB core.img is too big to be embedded in the MBR gap. And
therefore the installation of the bootloader actually failed during
the OS install.

Installing the bootloader by embedding to the VBR of /dev/sda5 is
suboptimal and not recommended by GRUB upstream, but it is supported
with --force which is what that command above will do. And it should
be pretty stable. And if it works, then you're done.



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Re: no grub after installing fedora23

[maderios]

On 12/23/2015 11:58 PM, Walter Cazzola wrote:


On Dec 23, 2015 11:34 PM, "Doug H." > wrote:

 > As maderios has pointed out, this partitioning does not look
 > workable. I don't think you can toggle the boot flag on for an extended
 > partition.

Ok tomorrow I'll redo the installation.

But just to do the right thing since the beginning how should the the
disk be partitioned?

Considering that the windows installation is split over three partitions
(sda1-3) that I won't touch and I would like to have
-/var
-/tmp
-/
-/home
- swap
-/opt
-/boot
- and a vfat partition to exchange data with Windows
On separate partitions.

Also I don't know what this efi partition (that maderios is mentioning)
is and is for. And how I should create it.
If you want only one system, F23,  installed on hour hd, I suggest 
simple partitionning

/dev/sda1 /boot/efi
/dev/sda2 swap
/dev/sda3  /
/dev/sda4  /home

If you want dual boot F23 + Windows, example
/dev/sda1  /boot/efi
/dev/sda2  W$
/dev/sda3  W$
/dev/sda4 swap
/dev/sda5  /
/dev/sda6  /home


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Re: no grub after installing fedora23

[maderios]

On 12/23/2015 01:23 AM, Walter Cazzola wrote:

Dear Fedora Experts,
I' ve recently bought a new Dell Precision m6800 and today I was trying
to install Fedora 23 in dual boot with windows 7 (this was the OS
originally on the machine).

I' ve run the installer from the live CD and after a couple of wrong
attempts I successfully finished the installation process without errors
or at least apparently without errors.

I' ve restarted the machine I got into the following error message:

*file "/boot/grub2/i386-pc/normal.mod" NOT FOUND
 grub rescue>*

neither windows nor fedora boot.

Booting again from the live cd I got that ever the partition are there:


Device Boot StartEndSectors   Size Id Type
/dev/sda1  63  80324  80262  39.2M de Dell Utility
/dev/sda2  * 81920   25710591   25628672  12.2G 27 Hidden NTFS WinRE
/dev/sda325710592  201408511  175697920  83.8G  7 HPFS/NTFS/exFAT
/dev/sda4   201408512 1953523711 1752115200 835.5G  5 Extended
/dev/sda5   201410560  2027765751366016   667M 83 Linux
/dev/sda6   202778624  307636223  10485760050G 83 Linux
/dev/sda7   307638272  341192703   3355443216G 82 Linux swap /
Solaris
/dev/sda8   341194752  351680511   10485760 5G 83 Linux
/dev/sda9   351682560  3600711678388608 4G 83 Linux
/dev/sda10  360073216  3684618238388608 4G 83 Linux
/dev/sda11  368463872  3716095993145728   1.5G  6 FAT16
/dev/sda12  371611648 1953523711 1581912064 754.3G 83 Linux

where sda1-3 are the original windows partitions, sda5 is /boot and sda6
is /

I' ve mounted the /boot partition and inside grub2 there is not i386-pc
dir nor the normal.mod file. I' ve tried to manually copy
/usr/lib/grub/i386-pc/normal.mod into /boot/grub2 but the only
difference I got is that the boot is stucked on

   grub>


Hi
Why an extended partitition? It should a gpt partitioning with efi. Your 
'Dell Precision m6800' uses uefi but you have not any efi partition

http://www.manualslib.com/manual/563583/Dell-Precision-M6800.html?page=58
For me, your install is wrong. First, You have to disable uefi secure 
boot in your bios, then install F23. Installer has to detect an efi 
partition like '/boot/efi'


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Re: no grub after installing fedora23

[Walter Cazzola]

On Wed, Dec 23, 2015 at 9:34 AM, Doug H. 
wrote:

> On Wed, 2015-12-23 at 09:20 -0500, Walter Cazzola wrote:
> >
> > This are the related options:
> >General
> >Boot Sequence
> >Legacy (this flagged)
>
> In that case, I think your first post indicated that the boot flag was
> not set for your new /boot partition.  From your post, with lots of
> snipping:
>
>
> Device Boot StartEndSectors   Size Id Type
> /dev/sda2  * 81920   25710591   25628672  12.2G 27 Hidden NTFS
> /dev/sda5   201410560  2027765751366016   667M 83 Linux
>
> where sda1-3 are the original windows partitions, sda5 is /boot and
> sda6 is /
>
>
Indeed you could be right. How I can change such a flag?

Second question: the error message said that no
/boot/grub2/i386-pc/normal.mod file is available and effectively I don' t
have such a file in that position but only it is in /usr/lib/grub/i386-pc/.
So changing the boot flag would be enough to solve the problem?

Walter

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Re: no grub after installing fedora23

[Walter Cazzola]

hi
thanks for the prompt reply

On Wed, Dec 23, 2015 at 6:32 AM, maderios  wrote:

> Hi
> Why an extended partitition?


I just marked the normal partition flag instead of LVM, is there any
practical and related issue with my problem in this?


> It should a gpt partitioning with efi. Your 'Dell Precision m6800' uses
> uefi but you have not any efi partition
> http://www.manualslib.com/manual/563583/Dell-Precision-M6800.html?page=58
> For me, your install is wrong. First, You have to disable uefi secure boot
> in your bios, then install F23. Installer has to detect an efi partition
> like '/boot/efi'


uhm, I' ve checked and in what should be the /boot dir I' ve

   efi
 |-->EFI
|-->BOOT
   |-->BOOTX64.EFI
   |-->fallback.efi
|-->fedora
   |-->BOOT.CSV
   |-->fonts
  |-->unicode.pf2
   |-->gcdx64.efi
   |-->grubx64.efi
   |-->MokManager.efi
   |-->shim.efi
   |-->shim-fedora.efi
 |-->mach_kernel
 |-->System
 |-->Library
|-->CoreServices
   |-->SystemVersion.plist

as far as I know everything is there or is it not?

I've also checked the options related to UEFI in my BIOS and seems that
UEFI and Secure boot are both disabled.
This are the related options:
   General
   Boot Sequence
   Legacy (this flagged)
   UEFI  (this is not flagged)
Advanced Boot Options
Enable Legacy Option ROMS (this is selected and the note says "This
option is not allowed if secure boot is enabled")
System Configuration
Integrated NIC
Enabled UEFI Network Stack (this is not flagged)
Enabled w/PXE (this is flagged)
Secure Boot
Disabled (flagged)


Could be that I missed something? Any other idea?

Walter

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Re: no grub after installing fedora23

[Doug H.]

On Wed, 2015-12-23 at 09:20 -0500, Walter Cazzola wrote:
> 
> This are the related options:
>    General
>    Boot Sequence
>    Legacy (this flagged)

In that case, I think your first post indicated that the boot flag was
not set for your new /boot partition.  From your post, with lots of
snipping:


Device Boot StartEndSectors   Size Id Type
/dev/sda2  * 81920   25710591   25628672  12.2G 27 Hidden NTFS 
/dev/sda5   201410560  2027765751366016   667M 83 Linux

where sda1-3 are the original windows partitions, sda5 is /boot and
sda6 is /


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Re: no grub after installing fedora23

[Doug H.]

On Wed, 2015-12-23 at 09:54 -0500, Walter Cazzola wrote:
> 
> 
> On Wed, Dec 23, 2015 at 9:34 AM, Doug H.  om> wrote:
> > On Wed, 2015-12-23 at 09:20 -0500, Walter Cazzola wrote:
> > > 
> > > This are the related options:
> > >    General
> > >    Boot Sequence
> > >    Legacy (this flagged)
> > 
> > In that case, I think your first post indicated that the boot flag
> > was
> > not set for your new /boot partition.  From your post, with lots of
> > snipping:
> > 
> > 
> > Device Boot StartEndSectors   Size Id Type
> > /dev/sda2  * 81920   25710591   25628672  12.2G 27 Hidden
> > NTFS 
> > /dev/sda5   201410560  2027765751366016   667M 83 Linux
> > 
> > where sda1-3 are the original windows partitions, sda5 is /boot and
> > sda6 is /
> > 
> > 
> Indeed you could be right. How I can change such a flag? 
> 
> Second question: the error message said that no /boot/grub2/i386-
> pc/normal.mod file is available and effectively I don' t have such a
> file in that position but only it is in /usr/lib/grub/i386-pc/. So
> changing the boot flag would be enough to solve the problem?

Please don't try this unless others reply to support this, but...

If you can boot to a Fedora CD/DVD which is able to detect your Fedora
install then I think it should be something like this...

chroot /mnt/sysimage

fdisk /dev/sda
 Command (m for help): a
 Partition number ([snip] default x): 5
 Command (m for help): w
 The partition table has been altered.
 Calling ioctl() to re-read partition table.

grub2-install /dev/sda


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Re: no grub after installing fedora23

[Doug H.]

On Wed, 2015-12-23 at 11:48 -0500, Walter Cazzola wrote:
> Hi 
> few more questions inline with your reply.

>  chroot /mnt/sysimage
> what should sysimage be? is this a file in the /boot partition? I
> don't have any file with this name in /boot

Historically (and currently I think), the rescue/repair option for the
Fedora CD & DVD is to look for a Fedora install and then mount it in
/mnt/sysimage.  So there would be a /mnt/sysimage/boot for example.
Thus you can do `chroot /mnt/sysimage` and the shell will act like you
are simply logged into the Fedora system.  Things would work as if you
had booted normally into the Fedora system.  That allows you to do
maintenance using the same full paths as "normal".


> >  fdisk /dev/sda
> >  Command (m for help): a
> >  Partition number ([snip] default x): 5
> >  Command (m for help): w
> >  The partition table has been altered.
> >  Calling ioctl() to re-read partition table.
> do the numbers already refer to my partitions or I've to change
> something? what should this do?

I ran an fdisk on a temp loopfile and then altered the output to show
"5" since I think that is the partition that I think might need to be
bootable.  What that does is to make partition 5 the boot/bootable
partition.  I don't really know how that works at a deeper level and I
have little experience with efi so far.  My suggestions are based on
the idea that your bios setup is presenting a traditional/older system
type.


> >  grub2-install /dev/sda
> if this doesn't work can I go back to the previous situation? if yes
> how?

The above assumes that your Windows boot utility has already been
messed with and is not usable at the moment.  If that is true then I am
not even sure you need to do the grub2-install but it seems like it
would not make it worse.

But again I don't feel comfortable suggesting these actions unless we
get some community support for it.

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Re: no grub after installing fedora23

[Walter Cazzola]

Hi
few more questions inline with your reply.

On Wed, Dec 23, 2015 at 10:12 AM, Doug H. 
wrote:

> On Wed, 2015-12-23 at 09:54 -0500, Walter Cazzola wrote:
> >
> >
> > On Wed, Dec 23, 2015 at 9:34 AM, Doug H.  > om> wrote:
> > > On Wed, 2015-12-23 at 09:20 -0500, Walter Cazzola wrote:
> > > >
> > > > This are the related options:
> > > >General
> > > >Boot Sequence
> > > >Legacy (this flagged)
> > >
> > > In that case, I think your first post indicated that the boot flag
> > > was
> > > not set for your new /boot partition.  From your post, with lots of
> > > snipping:
> > >
> > >
> > > Device Boot StartEndSectors   Size Id Type
> > > /dev/sda2  * 81920   25710591   25628672  12.2G 27 Hidden
> > > NTFS
> > > /dev/sda5   201410560  2027765751366016   667M 83 Linux
> > >
> > > where sda1-3 are the original windows partitions, sda5 is /boot and
> > > sda6 is /
>
> > Indeed you could be right. How I can change such a flag?
> >
> > Second question: the error message said that no /boot/grub2/i386-
> > pc/normal.mod file is available and effectively I don' t have such a
> > file in that position but only it is in /usr/lib/grub/i386-pc/. So
> > changing the boot flag would be enough to solve the problem?
>
> Please don't try this unless others reply to support this, but...
>
> ok I will wait


> If you can boot to a Fedora CD/DVD which is able to detect your Fedora
> install then I think it should be something like this..
>

what do you mean by " is able to detect your Fedora install"? I can boot
with the live cd and mount all the partitions but nothing is automatically
done.


> chroot /mnt/sysimage
>

what should sysimage be? is this a file in the /boot partition? I don' t
have any file with this name in /boot


> fdisk /dev/sda
>  Command (m for help): a
>  Partition number ([snip] default x): 5
>  Command (m for help): w
>  The partition table has been altered.
>  Calling ioctl() to re-read partition table.
>

do the numbers already refer to my partitions or I' ve to change something?
what should this do?


> grub2-install /dev/sda
>

if this doesn't work can I go back to the previous situation? if yes how?

thanks for the help
Walter


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Re: no grub after installing fedora23

[Richard Shaw]

I don't know if it was a rogue update or something but I had the same (or
similar) problem. Booting dropped me to the grub rescue prompt and my
i386-pc folder was also empty.

Only strange part of my setup is the main drive is GPT partitioned with
regular BIOS so I have a small bios_grub partition at the beginning of the
drive for the stage 2 bootloader.

Somehow my /boot filesystem got corrupted and after a fsck and copying the
files from /usr/lib/grub2/i386-pc to /boot/grub2/i386-pc I was able to boot
again.

Thanks,
Richard
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Re: no grub after installing fedora23

[Walter Cazzola]

On Wed, Dec 23, 2015 at 11:58 AM, Richard Shaw  wrote:

> I don't know if it was a rogue update or something but I had the same (or
> similar) problem. Booting dropped me to the grub rescue prompt and my
> i386-pc folder was also empty.
>
> Only strange part of my setup is the main drive is GPT partitioned with
> regular BIOS so I have a small bios_grub partition at the beginning of the
> drive for the stage 2 bootloader.
>
> Somehow my /boot filesystem got corrupted and after a fsck and copying the
> files from /usr/lib/grub2/i386-pc to /boot/grub2/i386-pc I was able to boot
> again.
>


I' ve tried to copy from /usr/lib/grub (I don' t have grub2 dir but just
grub) but the only result was to boot to the grub shell instead of the grub
rescue shell.

Can this help?

Walter

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Re: no grub after installing fedora23

[maderios]

On 12/23/2015 10:33 PM, Walter Cazzola wrote:


My impression is that the whole fedora installation tool failed and I'
ve a partial system but I can' t find more on this. I' m quite ready to
give up and try to install a different flavor of linux.


I told you the base, your disk partitioning,  is bad. A new/good fresh 
install avoid wasting time... Normally, it takes only about 20 mn.

Dont forget efi partition.
Good luck
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Re: no grub after installing fedora23

[Walter Cazzola]

Sorry for the flooding but my investigations is goin' further into the
problem.

Looking at the content of /boot
-rw-r--r--. 1 root root   160270 Oct  5 11:58 config-4.2.3-300.fc23.x86_64
drwxr-xr-x. 4 root root 4096 Oct 29 17:26 efi
-rw-r--r--. 1 root root   184380 Oct 21  2014 elf-memtest86+-5.01
drwxr-xr-x. 2 root root 4096 Oct 29 17:23 extlinux
drwxr-xr-x. 6 root root 4096 Dec 23 15:18 grub2
-rw-rw-r--. 1 root root 52373550 Dec 22 23:07
initramfs-0-rescue-4f585391395b40e3823bebd86a3e6c01.img
-rw-rw-r--. 1 root root 17771095 Dec 22 23:07
initramfs-4.2.3-300.fc23.x86_64.img
-rw-r--r--. 1 root root   571817 Oct 29 17:27 initrd-plymouth.img
drwx--. 2 root root16384 Dec 22 23:01 lost+found
-rw-r--r--. 1 root root   182704 Oct 21  2014 memtest86+-5.01
-rw---. 1 root root  3152021 Oct  5 11:58
System.map-4.2.3-300.fc23.x86_64
-rwxr-xr-x. 1 root root  5977368 Dec 22 23:07
vmlinuz-0-rescue-4f585391395b40e3823bebd86a3e6c01
-rwxr-xr-x. 1 root root  5977368 Oct  5 11:59 vmlinuz-4.2.3-300.fc23.x86_64

 it seems that initrd for tmy kernel is missing and also tryin' to manually
boot from the grub menu let the system fail.

My impression is that the whole fedora installation tool failed and I' ve a
partial system but I can' t find more on this. I' m quite ready to give up
and try to install a different flavor of linux.

Walter

On Wed, Dec 23, 2015 at 4:05 PM, Walter Cazzola  wrote:

> Hi.
> I've done some attempts and following a guide for ubunto I got some
> improvements.
>
> At the moment  the normal.mod is in the boot partition and I'm not
> starting with the grub2 rescue terminal but with still the selection menu
> doesn' t appear and the system doesn' t boot.
>
> At the moment the system get stuck on:
>grub2>
> prompt.
>
> I dug a littel in the system and
>- the boot flag still points to the sda2 (the dell recopvery partition)
> instead of the one with /boot partition (sda5)
>- in /etc there is a grub2.cfg file that it is a dangling link to
> /boot/grub2/grub.cfg
> probably both of these points are part of the problem.
>
> Looking around I found some guides about ubunto (e.g.,
> https://www.linux.com/learn/tutorials/776643-how-to-rescue-a-non-booting-grub-2-on-linux/)
> that uses an update-grub command to create the boot loader but I can' t
> find anything like that for fedora. What I'm I doing wrong now?
>
> Walter
>
> On Wed, Dec 23, 2015 at 1:08 PM, Doug H. 
> wrote:
>
>> On Wed, 2015-12-23 at 11:48 -0500, Walter Cazzola wrote:
>> > Hi
>> > few more questions inline with your reply.
>>
>> >  chroot /mnt/sysimage
>> > what should sysimage be? is this a file in the /boot partition? I
>> > don't have any file with this name in /boot
>>
>> Historically (and currently I think), the rescue/repair option for the
>> Fedora CD & DVD is to look for a Fedora install and then mount it in
>> /mnt/sysimage.  So there would be a /mnt/sysimage/boot for example.
>> Thus you can do `chroot /mnt/sysimage` and the shell will act like you
>> are simply logged into the Fedora system.  Things would work as if you
>> had booted normally into the Fedora system.  That allows you to do
>> maintenance using the same full paths as "normal".
>>
>>
>> > >  fdisk /dev/sda
>> > >  Command (m for help): a
>> > >  Partition number ([snip] default x): 5
>> > >  Command (m for help): w
>> > >  The partition table has been altered.
>> > >  Calling ioctl() to re-read partition table.
>> > do the numbers already refer to my partitions or I've to change
>> > something? what should this do?
>>
>> I ran an fdisk on a temp loopfile and then altered the output to show
>> "5" since I think that is the partition that I think might need to be
>> bootable.  What that does is to make partition 5 the boot/bootable
>> partition.  I don't really know how that works at a deeper level and I
>> have little experience with efi so far.  My suggestions are based on
>> the idea that your bios setup is presenting a traditional/older system
>> type.
>>
>>
>> > >  grub2-install /dev/sda
>> > if this doesn't work can I go back to the previous situation? if yes
>> > how?
>>
>> The above assumes that your Windows boot utility has already been
>> messed with and is not usable at the moment.  If that is true then I am
>> not even sure you need to do the grub2-install but it seems like it
>> would not make it worse.
>>
>> But again I don't feel comfortable suggesting these actions unless we
>> get some community support for it.
>>
>> --
>> Doug H.
>>
>
>
>
> --
>
>


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Re: no grub after installing fedora23

[Doug H.]

On Wed, 2015-12-23 at 07:12 -0800, Doug H. wrote:

> Please don't try this unless others reply to support this, but...
> 
> If you can boot to a Fedora CD/DVD which is able to detect your
> Fedora
> install then I think it should be something like this...
> 
> chroot /mnt/sysimage
> 
> fdisk /dev/sda
>  Command (m for help): a
>  Partition number ([snip] default x): 5
>  Command (m for help): w
>  The partition table has been altered.
>  Calling ioctl() to re-read partition table.
> 
> grub2-install /dev/sda


As maderios has pointed out, this partitioning does not look 
workable. I don't think you can toggle the boot flag on for an extended
partition.


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Re: no grub after installing fedora23

[Walter Cazzola]

On Dec 23, 2015 11:34 PM, "Doug H."  wrote:

> As maderios has pointed out, this partitioning does not look
> workable. I don't think you can toggle the boot flag on for an extended
> partition.

Ok tomorrow I'll redo the installation.

But just to do the right thing since the beginning how should the the disk
be partitioned?

Considering that the windows installation is split over three partitions
(sda1-3) that I won't touch and I would like to have
-/var
-/tmp
-/
-/home
- swap
-/opt
-/boot
- and a vfat partition to exchange data with Windows
On separate partitions.

Also I don't know what this efi partition (that maderios is mentioning) is
and is for. And how I should create it.

Any help would be really appreciated on this matter.

Thank you
Walter
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Re: no grub after installing fedora23

[Walter Cazzola]

Hi.
I've done some attempts and following a guide for ubunto I got some
improvements.

At the moment  the normal.mod is in the boot partition and I'm not starting
with the grub2 rescue terminal but with still the selection menu doesn' t
appear and the system doesn' t boot.

At the moment the system get stuck on:
   grub2>
prompt.

I dug a littel in the system and
   - the boot flag still points to the sda2 (the dell recopvery partition)
instead of the one with /boot partition (sda5)
   - in /etc there is a grub2.cfg file that it is a dangling link to
/boot/grub2/grub.cfg
probably both of these points are part of the problem.

Looking around I found some guides about ubunto (e.g.,
https://www.linux.com/learn/tutorials/776643-how-to-rescue-a-non-booting-grub-2-on-linux/)
that uses an update-grub command to create the boot loader but I can' t
find anything like that for fedora. What I'm I doing wrong now?

Walter

On Wed, Dec 23, 2015 at 1:08 PM, Doug H. 
wrote:

> On Wed, 2015-12-23 at 11:48 -0500, Walter Cazzola wrote:
> > Hi
> > few more questions inline with your reply.
>
> >  chroot /mnt/sysimage
> > what should sysimage be? is this a file in the /boot partition? I
> > don't have any file with this name in /boot
>
> Historically (and currently I think), the rescue/repair option for the
> Fedora CD & DVD is to look for a Fedora install and then mount it in
> /mnt/sysimage.  So there would be a /mnt/sysimage/boot for example.
> Thus you can do `chroot /mnt/sysimage` and the shell will act like you
> are simply logged into the Fedora system.  Things would work as if you
> had booted normally into the Fedora system.  That allows you to do
> maintenance using the same full paths as "normal".
>
>
> > >  fdisk /dev/sda
> > >  Command (m for help): a
> > >  Partition number ([snip] default x): 5
> > >  Command (m for help): w
> > >  The partition table has been altered.
> > >  Calling ioctl() to re-read partition table.
> > do the numbers already refer to my partitions or I've to change
> > something? what should this do?
>
> I ran an fdisk on a temp loopfile and then altered the output to show
> "5" since I think that is the partition that I think might need to be
> bootable.  What that does is to make partition 5 the boot/bootable
> partition.  I don't really know how that works at a deeper level and I
> have little experience with efi so far.  My suggestions are based on
> the idea that your bios setup is presenting a traditional/older system
> type.
>
>
> > >  grub2-install /dev/sda
> > if this doesn't work can I go back to the previous situation? if yes
> > how?
>
> The above assumes that your Windows boot utility has already been
> messed with and is not usable at the moment.  If that is true then I am
> not even sure you need to do the grub2-install but it seems like it
> would not make it worse.
>
> But again I don't feel comfortable suggesting these actions unless we
> get some community support for it.
>
> --
> Doug H.
>



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Re: no grub after installing fedora23

[Doug H.]

On Wed, 2015-12-23 at 16:33 -0500, Walter Cazzola wrote:
> Sorry for the flooding but my investigations is goin' further into
> the problem. 
> 
> Looking at the content of /boot
> -rw-r--r--. 1 root root   160270 Oct  5 11:58 config-4.2.3-
> 300.fc23.x86_64
> drwxr-xr-x. 4 root root 4096 Oct 29 17:26 efi
> -rw-r--r--. 1 root root   184380 Oct 21  2014 elf-memtest86+-5.01
> drwxr-xr-x. 2 root root 4096 Oct 29 17:23 extlinux
> drwxr-xr-x. 6 root root 4096 Dec 23 15:18 grub2
> -rw-rw-r--. 1 root root 52373550 Dec 22 23:07 initramfs-0-rescue-
> 4f585391395b40e3823bebd86a3e6c01.img
> -rw-rw-r--. 1 root root 17771095 Dec 22 23:07 initramfs-4.2.3-
> 300.fc23.x86_64.img
> -rw-r--r--. 1 root root   571817 Oct 29 17:27 initrd-plymouth.img
> drwx--. 2 root root    16384 Dec 22 23:01 lost+found
> -rw-r--r--. 1 root root   182704 Oct 21  2014 memtest86+-5.01
> -rw---. 1 root root  3152021 Oct  5 11:58 System.map-4.2.3-
> 300.fc23.x86_64
> -rwxr-xr-x. 1 root root  5977368 Dec 22 23:07 vmlinuz-0-rescue-
> 4f585391395b40e3823bebd86a3e6c01
> -rwxr-xr-x. 1 root root  5977368 Oct  5 11:59 vmlinuz-4.2.3-
> 300.fc23.x86_64
> 
>  it seems that initrd for tmy kernel is missing and also tryin' to
> manually boot from the grub menu let the system fail. 
> 
> My impression is that the whole fedora installation tool failed and
> I've a partial system but I can' t find more on this. I' m quite
> ready to give up and try to install a different flavor of linux.


Re-install, Fedora or otherwise, might be the quick fix.  But I don't
see that initrd is missing.  My current top level for boot is:

>ls -1 /boot
config-4.2.6-301.fc23.x86_64
config-4.2.7-300.fc23.x86_64
config-4.2.8-300.fc23.x86_64
elf-memtest86+-5.01
extlinux
grub2
initramfs-0-rescue-c10a26eb97b3451f95a20a792c5a897d.img
initramfs-4.1.7-200.fc22.x86_64.img
initramfs-4.2.6-301.fc23.x86_64.img
initramfs-4.2.7-300.fc23.x86_64.img
initramfs-4.2.8-300.fc23.x86_64.img
initrd-plymouth.img
lost+found
memtest86+-5.01
System.map-4.2.6-301.fc23.x86_64
System.map-4.2.7-300.fc23.x86_64
System.map-4.2.8-300.fc23.x86_64
vmlinuz-0-rescue-c10a26eb97b3451f95a20a792c5a897d
vmlinuz-4.2.6-301.fc23.x86_64
vmlinuz-4.2.7-300.fc23.x86_64
vmlinuz-4.2.8-300.fc23.x86_64


Notice that the init fs files are named as yours is.


-- 
Doug H.
-- 
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