Re: Getting grub working on a LiveUSB

[Joe Zeff]

On 10/04/2023 06:19 PM, George N. White III wrote:

You can get some information using the grub prompt.  First thing to try
is ls:




Yes, I learned that from the guide I linked to.  Alas, things are 
different enough that I haven't been able to get the drive to boot yet.

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Re: 4k video playback on some videos makes entire system sluggish

[George N. White III]

On Wed, Oct 4, 2023 at 5:49 PM Alex  wrote:

> Hi,
>
> I have a fedora38 desktop and having a problem playing 4k videos. When
> playing some videos, my entire system becomes sluggish and slow to respond,
> like the system is under extreme load or all resources are consumed by
> graphics rendering.
>

Did 4k the sluggish 4K videos play smoothly in the past?.

>
> This is the lspci info for my video card:
> 07:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
> Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] (rev ef)
>
> CPU utilization doesn't appear to be a problem, so really have no idea why
> this is happening. Perhaps a missing codec? How do I control hardware
> rendering?
>
> What other information can I provide to help troubleshoot this?
>

inxi -Gxx will tell us which model and driver are used

Quoting <
https://www.pcworld.com/article/415930/amd-radeon-rx-470-review-a-great-graphics-card-with-a-terrible-price.html
>:

"*All* of the RX 470s on release will be custom models from AMD hardware
partners. It’s the mirror opposite of the RX 480 situation—and it adds a
whiff of “apples-to-oranges” in comparisons between the two cards. The
clock speeds and cooling solutions in custom models can vary wildly."

-- 
George N. White III
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Re: Getting grub working on a LiveUSB

[George N. White III]

On Wed, Oct 4, 2023 at 7:38 PM Joe Zeff  wrote:

> On 10/04/2023 03:19 PM, Patrick O'Callaghan wrote:
> > Unless I missed it, I don't think you've mentioned the laptop brand and
> > model, which might give a clue to someone reading this.
> >
>
> Gateway, model GWTN156-78K
>
> > Also, and sorry to be obvious, but have you checked the laptop
> > manufacturer's website for BIOS documentation (often under Support)?
> > That should tell you what the magic key combo is to get to the BIOS
> > menu, which in turn will let you configure what boot device to use.
>
> As reported earlier, I asked at the OEM's website over the weekend and
> haven't received an answer.  If I don't have a flash drive inserted at
> boot, F12 gets me to BIOS.  If I do, it goes right to the grub prompt
> whatever I do.  The hard drive is blank, so the only possible boot
> device is that flash drive.
>

You can get some information using the grub prompt.  First thing to try
is ls:



 --

> George N. White III
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Re: Getting grub working on a LiveUSB

[Joe Zeff]

On 10/04/2023 03:19 PM, Patrick O'Callaghan wrote:

Unless I missed it, I don't think you've mentioned the laptop brand and
model, which might give a clue to someone reading this.



Gateway, model GWTN156-78K


Also, and sorry to be obvious, but have you checked the laptop
manufacturer's website for BIOS documentation (often under Support)?
That should tell you what the magic key combo is to get to the BIOS
menu, which in turn will let you configure what boot device to use.


As reported earlier, I asked at the OEM's website over the weekend and 
haven't received an answer.  If I don't have a flash drive inserted at 
boot, F12 gets me to BIOS.  If I do, it goes right to the grub prompt 
whatever I do.  The hard drive is blank, so the only possible boot 
device is that flash drive.

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Re: Getting grub working on a LiveUSB

[Patrick O'Callaghan]

On Wed, 2023-10-04 at 13:38 -0600, Joe Zeff wrote:
> On 10/04/2023 01:28 PM, Go Canes wrote:
> > If I understand correctly, on the same laptop:
> > - you can boot off the hard drive and then download the iso file. 
> > You
> > can then insert the USB flash drive and copy the iso to the flash
> > drive using dd.
> > - the flash drive passes the checksum test
> 
> No!  The laptop has a new, unformatted hard drive because the old one
> is 
> dead.  When I picked up my laptop after the brain transplant (I don't
> do 
> hardware.  Ever.)  I used my desktop to create the drive off of an
> .iso 
> that I downloaded from the Fedora Project, and the download passed
> the 
> checksum test.  And,if I try to boot off of that drive on my desktop,
> it 
> fails in the exact same way.  Add to that the fact that the flash
> drive 
> is new, and you've got the idea.

Unless I missed it, I don't think you've mentioned the laptop brand and
model, which might give a clue to someone reading this.

Also, and sorry to be obvious, but have you checked the laptop
manufacturer's website for BIOS documentation (often under Support)?
That should tell you what the magic key combo is to get to the BIOS
menu, which in turn will let you configure what boot device to use.

As a last resort, try just holding down the DEL key while restarting.
That works on some models. Other might use F11, F12 etc. so it's a
toss-up.

poc
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Re: 4k video playback on some videos makes entire system sluggish

[Patrick O'Callaghan]

On Wed, 2023-10-04 at 16:48 -0400, Alex wrote:
> Hi,
> 
> I have a fedora38 desktop and having a problem playing 4k videos.
> When
> playing some videos, my entire system becomes sluggish and slow to
> respond,
> like the system is under extreme load or all resources are consumed
> by
> graphics rendering.
> 
> This is the lspci info for my video card:
> 07:00.0 VGA compatible controller: Advanced Micro Devices, Inc.
> [AMD/ATI]
> Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] (rev ef)
> 
> CPU utilization doesn't appear to be a problem, so really have no
> idea why
> this is happening. Perhaps a missing codec? How do I control hardware
> rendering?
> 
> What other information can I provide to help troubleshoot this?

At a minimum, what video software is this, and what codec does the
video use? For the latter, use (e.g.) mediainfo to find out.

poc
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Re: Getting grub working on a LiveUSB

[Joe Zeff]

On 10/04/2023 02:47 PM, Go Canes wrote:

My fault - I had understood the grub prompt was using a live image as
opposed to my suggestion of using the server net install image.


That's what it's supposed to do, but it never gets as far as a menu.
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Re: Getting grub working on a LiveUSB

[Joe Zeff]

On 10/04/2023 02:30 PM, Mike Wright wrote:

Working from the grub prompt:

https://superuser.com/questions/1237684/how-to-boot-from-grub-shell


This gives roughly the same instructions as 
https://www.linuxfoundation.org/blog/blog/classic-sysadmin-how-to-rescue-a-non-booting-grub-2-on-linux, 
which is what I've been using.  Alas, the files aren't in the same place 
and I've not been able to get this working.  Thanx, though, for a good link.

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4k video playback on some videos makes entire system sluggish

[Alex]

Hi,

I have a fedora38 desktop and having a problem playing 4k videos. When
playing some videos, my entire system becomes sluggish and slow to respond,
like the system is under extreme load or all resources are consumed by
graphics rendering.

This is the lspci info for my video card:
07:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] (rev ef)

CPU utilization doesn't appear to be a problem, so really have no idea why
this is happening. Perhaps a missing codec? How do I control hardware
rendering?

What other information can I provide to help troubleshoot this?
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Re: Getting grub working on a LiveUSB

[Go Canes]

On Wed, Oct 4, 2023 at 4:25 PM Joe Zeff  wrote:
>
> On 10/04/2023 02:16 PM, Go Canes wrote:
> > - on the laptop, boot off of the USB drive.  If it gives you the
> > expected menu, choose the option for verifying the media.
>
> If I could do that, I wouldn't be asking about a grub prompt, would I?

My fault - I had understood the grub prompt was using a live image as
opposed to my suggestion of using the server net install image.
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Re: grub options

[Joe Zeff]

On 10/04/2023 02:20 PM, Robert McBroom via users wrote:




If you have a time delay set on the boot menu you can use the e command 
to change the cmdline. ctl/x then boots. The change is then persistent 
the nest time a kernel is installed.


I never get to the boot menu.  It just jumps directly to the grub 
prompt, which is what I've been saying all along.  Considering the lack 
of relevance of many of the responses, I'm beginning to wonder if you 
don't believe me, or just aren't reading enough of my posts to 
understand that what you want to suggest is either irrelevant, 
impossible or both.

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Re: Getting grub working on a LiveUSB

[Mike Wright]

On 10/4/23 13:25, Joe Zeff wrote:

On 10/04/2023 02:16 PM, Go Canes wrote:

- on the laptop, boot off of the USB drive.  If it gives you the
expected menu, choose the option for verifying the media.


If I could do that, I wouldn't be asking about a grub prompt, would I?


Working from the grub prompt:

https://superuser.com/questions/1237684/how-to-boot-from-grub-shell

It's a shot.
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Re: Getting grub working on a LiveUSB

[Joe Zeff]

On 10/04/2023 02:16 PM, Go Canes wrote:

- on the laptop, boot off of the USB drive.  If it gives you the
expected menu, choose the option for verifying the media.


If I could do that, I wouldn't be asking about a grub prompt, would I?
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Re: Getting grub working on a LiveUSB

[Joe Zeff]

On 10/04/2023 02:16 PM, Go Canes wrote:

I don't use live images, so I don't know if they have a problem with
the RAID/non-RAID setting.  Worst case I would think it would at least
boot but just not be able to access the hard drive if the settings
were incompatible.


Totally irrelevant.  Neither my desktop nor my laptop are set up with 
RAID, and if that were an issue, it wouldn't show up until I tried to 
access the hard drive from the LiveOS.

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Re: grub options

[Robert McBroom via users]

On 10/4/23 12:49, Joe Zeff wrote:

On 10/04/2023 04:24 AM, Thomas wrote:
I had this issue and it's referred in a number of bugs on bugzilla, 
such as:https://bugzilla.redhat.com/show_bug.cgi?id=1925776


Either edit /etc/kernel/cmdline to remove the option or use grubby 
that updates both sets of files and the entries on /boot as well


Neither option, alas, is available from the grub command line on a 
flash drive.

___


If you have a time delay set on the boot menu you can use the e command 
to change the cmdline. ctl/x then boots. The change is then persistent 
the nest time a kernel is installed.


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Re: Getting grub working on a LiveUSB

[Go Canes]

On Wed, Oct 4, 2023 at 3:39 PM Joe Zeff  wrote:
> [...]  The laptop has a new, unformatted hard drive because the old one is
> dead.  When I picked up my laptop after the brain transplant (I don't do
> hardware.  Ever.)  I used my desktop to create the drive off of an .iso
> that I downloaded from the Fedora Project, and the download passed the
> checksum test.  And,if I try to boot off of that drive on my desktop, it
> fails in the exact same way.  Add to that the fact that the flash drive
> is new, and you've got the idea.

So we don't know if the new hard drive for the laptop is working or
not.  We may not be getting far enough in the process to tell.

I would still go through the BIOS settings, especially if your desktop
is from the same manufacturer (or running a similar BIOS).

I don't use live images, so I don't know if they have a problem with
the RAID/non-RAID setting.  Worst case I would think it would at least
boot but just not be able to access the hard drive if the settings
were incompatible.

Other thoughts - are there other USB devices connected?  If so, try
disconnecting them.

Unless the desktop is "similar" to the laptop - same manufacturer,
BIOS, etc. - it sounds like the only real common failure point is the
USB key itself.

My next steps would be:
- on the desktop, download the server net install iso, and run the
checksum test to make sure it downloaded correctly
- dd the iso file to the USB drive
- remove the USB drive [just being extra careful nothing is cached/buffered]
- reinstall the USB drive, and run "diff" or "cmp" against the iso and
the USB drive.  This is to confirm that the iso copied correctly.
- remove the USB drive
- on the laptop, boot off of the USB drive.  If it gives you the
expected menu, choose the option for verifying the media.  Really
shouldn't be needed if we get this far, but the only cost is time.
- if we get this far, choose the "rescue" option, and then choose a
shell.  From here you can use the usual troubleshooting commands like
lsblk, fdisk, etc.
- if we get this far, you can just install using this iso.  Even
though it is the "server" image, you can do a workstation install, you
just have to mind the defaults that are different for server vs
workstation - i.e., server defaults to xfs, ,workstation defaults to
btrfs I think.

Also note that the server net install will download current packages
for the install, so you don't need to do an immediate "dnf update"
after the install.
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Re: Getting grub working on a LiveUSB

[Joe Zeff]

On 10/04/2023 01:28 PM, Go Canes wrote:

If I understand correctly, on the same laptop:
- you can boot off the hard drive and then download the iso file.  You
can then insert the USB flash drive and copy the iso to the flash
drive using dd.
- the flash drive passes the checksum test


No!  The laptop has a new, unformatted hard drive because the old one is 
dead.  When I picked up my laptop after the brain transplant (I don't do 
hardware.  Ever.)  I used my desktop to create the drive off of an .iso 
that I downloaded from the Fedora Project, and the download passed the 
checksum test.  And,if I try to boot off of that drive on my desktop, it 
fails in the exact same way.  Add to that the fact that the flash drive 
is new, and you've got the idea.

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Re: Getting grub working on a LiveUSB

[Go Canes]

On Wed, Oct 4, 2023 at 2:59 PM Joe Zeff  wrote:
>
> On 10/04/2023 12:37 PM, Wolfgang Pfeiffer wrote:
> The laptop's BIOS obviously sees the drive because if the drive's
> inserted when I turn it on, it ignores any and all F keys and tries to
> boot from it.  And, my desktop had no trouble writing the .iso to it
> with dd, and I can open it up and look at the various files on it with
> my desktop.  Yes, there may be something wrong with it, but it's not
> completely dead.

If I understand correctly, on the same laptop:
- you can boot off the hard drive and then download the iso file.  You
can then insert the USB flash drive and copy the iso to the flash
drive using dd.
- the flash drive passes the checksum test
- you can mount the flash drive and examine the files
but again on the same laptop:
- if you boot off of the USB flash drive, it *boots*, but stops at a
"grub>" prompt
- with the USB drive inserted the laptop does not allow you to enter
BIOS/CMOS/Setup/Whatever by using an appropriate key

My best *guesses*.
- the laptop is set to RAID mode instead of non-RAID mode.  Go into
BIOS and check.
- the laptop has a BIOS setting that tries to implement "security" by
disabling Setup and the hard drive when booted off a USB drive.
Again, go into BIOS and check.

Other things you can try:
- non-USB media.  DVD-R, Compact Flash or SD card if laptop has such,
you have spare media, and laptop will boot off it.
- you can download the server "net install" iso and use it as a test.
It won't provide a "live image" but it should allow you to get to a
bash shell for troubleshooting.
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Re: Getting grub working on a LiveUSB

[Joe Zeff]

On 10/04/2023 12:37 PM, Wolfgang Pfeiffer wrote:


And when you're in that boot menu you might actually see your USB
drive show up as a boot option. Or that's at least what I would
expect. If you don't see the drive there, I'd again try another one


The laptop's BIOS obviously sees the drive because if the drive's 
inserted when I turn it on, it ignores any and all F keys and tries to 
boot from it.  And, my desktop had no trouble writing the .iso to it 
with dd, and I can open it up and look at the various files on it with 
my desktop.  Yes, there may be something wrong with it, but it's not 
completely dead.

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Re: Getting grub working on a LiveUSB

[Joe Zeff]

On 10/04/2023 12:37 PM, Wolfgang Pfeiffer wrote:

That's no guarantee that the drive works. I'd try another one,
especially given that it also fails on your desktop. And as you
already mentioned that you saw the laptop running a live system off a
flash drive suggests that the machine has no specific problems with
USB boots.



I'm also considering that, especially as I've tried to download Xubuntu, 
but the download always fails.



Regarding the booting options for a flash drive: I usually do that by
holding down an F*-key right after powering on the computer (I have to
be quick to do that) to access the UEFI/BIOS boot menu. The F*-key for
your machine depends on the model of your hardware. Mine (Dell) opens
the boot menu with F12. An internet search should say something about
the correct key for your model.


On my laptop, I can only get into the CMOS setup by waiting until the 
logo appears, then pressing F12, and only if the flash drive isn't 
inserted.  As I've already mentioned, I sent a request for information 
to the OEM over the weekend, but haven't received an answer yet.  Will 
try again later today.

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Re: Getting grub working on a LiveUSB

[Wolfgang Pfeiffer]

On Wed, Oct 04, 2023 at 10:56:59AM -0600, Joe Zeff wrote:

On 10/04/2023 07:50 AM, Wolfgang Pfeiffer wrote:

If a thumb drive isn't detected at the BIOS boot menu chances are high
that either the download for the installed ISO went south or the thumb
simply is broken.


It's a new drive [ ... ]


That's no guarantee that the drive works. I'd try another one,
especially given that it also fails on your desktop. And as you
already mentioned that you saw the laptop running a live system off a
flash drive suggests that the machine has no specific problems with
USB boots.

Regarding the booting options for a flash drive: I usually do that by
holding down an F*-key right after powering on the computer (I have to
be quick to do that) to access the UEFI/BIOS boot menu. The F*-key for
your machine depends on the model of your hardware. Mine (Dell) opens
the boot menu with F12. An internet search should say something about
the correct key for your model.

And when you're in that boot menu you might actually see your USB
drive show up as a boot option. Or that's at least what I would
expect. If you don't see the drive there, I'd again try another one.

Wolfgang
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Re: Getting grub working on a LiveUSB

[Joe Zeff]

On 10/04/2023 07:50 AM, Wolfgang Pfeiffer wrote:

If a thumb drive isn't detected at the BIOS boot menu chances are high
that either the download for the installed ISO went south or the thumb
simply is broken.


It's a new drive, the .iso checksum was OK and it does the same thing on 
my desktop, which I think I've mentioned.  Time for a bugzilla?

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Re: Getting grub working on a LiveUSB

[Joe Zeff]

On 10/04/2023 05:24 AM, George N. White III wrote:


Check the vendor's site and web for reports of problems booting USB
devices on your model.   There may be a BIOS update.   I think some
boot issues on older systems are due to code that doesn't support
current USB capacities and filesystems.


I asked the OEM over the weekend and am still waiting for a reply.
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Re: grub options

[Joe Zeff]

On 10/04/2023 04:24 AM, Thomas wrote:

I had this issue and it's referred in a number of bugs on bugzilla, such 
as:https://bugzilla.redhat.com/show_bug.cgi?id=1925776

Either edit /etc/kernel/cmdline to remove the option or use grubby that updates 
both sets of files and the entries on /boot as well


Neither option, alas, is available from the grub command line on a flash 
drive.

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Re: Getting grub working on a LiveUSB

[Joe Zeff]

On 10/04/2023 02:21 AM, Tim via users wrote:

Has that laptop ever booted successfully from a USB-anything?

Are there any BIOS/UEFI booting options you can play with?


When I picked it up at the ship, it was running a live system off a 
flash drive.  If there are any booting options, I don't know what they 
are.  Suggestions?

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Re: Getting grub working on a LiveUSB

[Wolfgang Pfeiffer]

On Wed, Oct 04, 2023 at 08:24:07AM -0300, George N. White III wrote:


Check the vendor's site and web for reports of problems booting USB

devices on your model.   There may be a BIOS update.


.. this, yes. But I'm extremely hesitant with BIOS upgrades - if they
fail, and there's no recovery option available: bye-bye computer
... ;)

If a thumb drive isn't detected at the BIOS boot menu chances are high
that either the download for the installed ISO went south or the thumb
simply is broken.

USB drives often seem to be literally left-overs from SSD
manufacturing (1). I never trust them and consider them literally as
potential garbage: perhaps a good idea to have quite a few of them
around, just in case one of them fails ...

Wolfgang


(1) from 2017:
"The flash memory in cheap USB flash drives usually comes from the end
of the flash recycling chain: What is not suitable as SSD memory
becomes an SD card, and what is not suitable for that is perhaps still
used in USB flash drives."

from
https://www.heise.de/select/ct/2017/16/1501525190466804
(Translation: deeple)
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Re: Getting grub working on a LiveUSB

[André Verwijs via users]

the easiest way is Ventoy, (https://www.ventoy.net/en/index.html )  if you want 
to install OS from .iso file  ...

- Original Message -
From: "George N. White III" 
To: Community support for Fedora users 
Date: Wed, 4 Oct 2023 08:24:07 -0300
Subject: Re: Getting grub working on a LiveUSB

> On Wed, Oct 4, 2023 at 5:21 AM Tim via users 
> wrote:
>
> > On Tue, 2023-10-03 at 23:28 -0600, Joe Zeff wrote:
> > > I've downloaded and verified an .iso for F38 with Xfce, used dd to write
> > > it to a new flash drive and tried to boot it on my laptop with a brand
> > > new blank hard drive.  All I get is a grub prompt.
> >
> > Has that laptop ever booted successfully from a USB-anything?
> >
> > Are there any BIOS/UEFI booting options you can play with?
> >
> > I've a PC that I can't boot from anything plugged into the USB port.
> > It has boot options for a USB floppy or Zip drive, neither of which
> > I have, which are sufficiently "special" that you can't just plug in a
> > USB flashdrive and boot from a CD/DVD-ROM boot-image on it.
> >
> > Check the vendor's site and web for reports of problems booting USB
> devices on your model.   There may be a BIOS update.   I think some
> boot issues on older systems are due to code that doesn't support
> current USB capacities and filesystems.
>
> https://www.pendrivelinux.com/make-an-exfat-bootable-usb-flash-drive/
> assumes you have access to Windows and has:
>
> "*Caveats*: Legacy BIOS booting does not work on a very small select few
> finicky CSM booted systems."
>
>
> > For it, I always burnt a CD or DVD.  Now, it's just too old and
> > horrible to actually want to use that PC.
> >
> > On some other painful PC, I plugged a USB DVD-ROM drive into it and
> > installed from a burnt disc.
> >
> > In the past, my other way to get an install onto a difficult system was
> > to remove the hard drive, fit it in another PC, install Linux to it,
> > put the hard drive back into the painful PC.  I don't know how
> > customised the install is, these days, for that to work.
> >
>
> The rescue kernel has the drivers that were on the install image,
> so should boot even if the installed kernel is missing some drivers.
>
>
> > Other people have done things like download an install ISO to a spare
> > partition on a drive, fiddled with the GRUB entries, and booted the
> > installer from that hard drive and installing to other partitions on
> > the same drive.
> >
>
> --
> George N. White III
>
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Re: Getting grub working on a LiveUSB

[George N. White III]

On Wed, Oct 4, 2023 at 5:21 AM Tim via users 
wrote:

> On Tue, 2023-10-03 at 23:28 -0600, Joe Zeff wrote:
> > I've downloaded and verified an .iso for F38 with Xfce, used dd to write
> > it to a new flash drive and tried to boot it on my laptop with a brand
> > new blank hard drive.  All I get is a grub prompt.
>
> Has that laptop ever booted successfully from a USB-anything?
>
> Are there any BIOS/UEFI booting options you can play with?
>
> I've a PC that I can't boot from anything plugged into the USB port.
> It has boot options for a USB floppy or Zip drive, neither of which
> I have, which are sufficiently "special" that you can't just plug in a
> USB flashdrive and boot from a CD/DVD-ROM boot-image on it.
>
> Check the vendor's site and web for reports of problems booting USB
devices on your model.   There may be a BIOS update.   I think some
boot issues on older systems are due to code that doesn't support
current USB capacities and filesystems.

https://www.pendrivelinux.com/make-an-exfat-bootable-usb-flash-drive/
assumes you have access to Windows and has:

"*Caveats*: Legacy BIOS booting does not work on a very small select few
finicky CSM booted systems."


> For it, I always burnt a CD or DVD.  Now, it's just too old and
> horrible to actually want to use that PC.
>
> On some other painful PC, I plugged a USB DVD-ROM drive into it and
> installed from a burnt disc.
>
> In the past, my other way to get an install onto a difficult system was
> to remove the hard drive, fit it in another PC, install Linux to it,
> put the hard drive back into the painful PC.  I don't know how
> customised the install is, these days, for that to work.
>

The rescue kernel has the drivers that were on the install image,
so should boot even if the installed kernel is missing some drivers.


> Other people have done things like download an install ISO to a spare
> partition on a drive, fiddled with the GRUB entries, and booted the
> installer from that hard drive and installing to other partitions on
> the same drive.
>

-- 
George N. White III
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Re: grub options

[Thomas]

> Hi,
>
> I usually avoid "rhgb" in the boot command as I like to see what 
> happens. I did 
> this editing the /etc/default/grub and removing it and it did work for 
> a long time.
> In the last few kernel updates it did not work and rhgb is in the boot 
> line.
> I grubby-ed it away but the following update put it back. I could not 
> find any 
> mention of it in /etc/default/grub or any /etc/grub config files, so 
> where does 
> it come from? /boot/grub2/grub.cfg still says:
>
> #
> # It is automatically generated by grub2-mkconfig using templates
> # from /etc/grub.d and settings from /etc/default/grub
> #

I had this issue and it's referred in a number of bugs on bugzilla, such as: 
https://bugzilla.redhat.com/show_bug.cgi?id=1925776

Either edit /etc/kernel/cmdline to remove the option or use grubby that updates 
both sets of files and the entries on /boot as well
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grub options

[GianPiero Puccioni]

Hi,

I usually avoid "rhgb" in the boot command as I like to see what happens. I did 
this editing the /etc/default/grub and removing it and it did work for a long time.

In the last few kernel updates it did not work and rhgb is in the boot line.
I grubby-ed it away but the following update put it back. I could not find any 
mention of it in /etc/default/grub or any /etc/grub config files, so where does 
it come from? /boot/grub2/grub.cfg still says:


#
# It is automatically generated by grub2-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#


G
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Re: Getting grub working on a LiveUSB

[Tim via users]

On Tue, 2023-10-03 at 23:28 -0600, Joe Zeff wrote:
> I've downloaded and verified an .iso for F38 with Xfce, used dd to write 
> it to a new flash drive and tried to boot it on my laptop with a brand 
> new blank hard drive.  All I get is a grub prompt.

Has that laptop ever booted successfully from a USB-anything?

Are there any BIOS/UEFI booting options you can play with?

I've a PC that I can't boot from anything plugged into the USB port. 
It has boot options for a USB floppy or Zip drive, neither of which
I have, which are sufficiently "special" that you can't just plug in a
USB flashdrive and boot from a CD/DVD-ROM boot-image on it.

For it, I always burnt a CD or DVD.  Now, it's just too old and
horrible to actually want to use that PC.

On some other painful PC, I plugged a USB DVD-ROM drive into it and
installed from a burnt disc.

In the past, my other way to get an install onto a difficult system was
to remove the hard drive, fit it in another PC, install Linux to it,
put the hard drive back into the painful PC.  I don't know how
customised the install is, these days, for that to work.

Other people have done things like download an install ISO to a spare
partition on a drive, fiddled with the GRUB entries, and booted the
installer from that hard drive and installing to other partitions on
the same drive.

There was a "media writer" app that helped you put an installer onto a
USB memory stick, giving you different bootblock options.  What I read
about the current mediawriter app doesn't have any options like that.


-- 
 
uname -rsvp
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