Re: [Dorset] Where Grub??

[Tim]

So I turned everything off, unplugged the USB Harddrive, started the 
laptop up, came up with the welcome to Grub screen then gave the option 
of the disto on the internal hard disk or the distro on the external, I 
choose the internal install and it loaded without an issue.


So I have done a little checking, I have looked at /boot/grub/grub.cfg 
and there is no "menuentry" for the LINUX MINT DEBIAN EDITION (LMDE), 
there are 3 entries for the Linux Mint XFCE edition and it waits about 4 
seconds before booting into Linux Mint XFCE. But having said that if I 
check /etc/default/grub the GRUB_TIMEOUT=0 which means it is automatic 
load, which would be right as previously before installing LMDE and 
setting it to install grub on SDA Linux Mint loaded with out any sign 
for grub which would be right for GRUB_TIMEOUT=0 from what I understand.


I did try running grub-emu which is supposed to display the menu list 
which said that the file could not be found (bear in mind that dev/sdc 
where LMDE was installed, is currently unplugged)


The version of grub installed is 2.06-2ubuntu7.2 which is the same 
reported installed in Synaptic (apt gui)  on Linux Mint XFCE which is 
the installed distro on the laptop ssd, I was testing, Linux Mint Debian 
Edition (LMDE) which was installed on the external disk


So it looks like there is some Grub installed else where but is not 
stopping me from booting the installed Linux Mint XFCE


Regards

Tim


On 06/05/2024 17:15, Ralph Corderoy wrote:

Hi Tim,


So how do I confirm if I did install grub onto dev/sda for the
installed day to day distro.

My guess:

- Turn everything off.
- Unplug the external USB drive.
- Turn the PC on.
- Expect GRUB to appear, offering your old installation.
- Select it.
- See if it boots it successfully.


Once I have that information how do I go about updating Grub so I can
remove the distro I was testing and just leave the day to day distro
please.

That may depend on the style of GRUB installation set up by the
distribution.  If you have a /boot/grub/grub.cfg then that will have
‘menuentry { ... }’ entries matching what you see.


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Re: [Dorset] Where Grub??

[Ralph Corderoy]

Hi Tim,

> So how do I confirm if I did install grub onto dev/sda for the
> installed day to day distro.

My guess:

- Turn everything off.
- Unplug the external USB drive.
- Turn the PC on.
- Expect GRUB to appear, offering your old installation.
- Select it.
- See if it boots it successfully.

> Once I have that information how do I go about updating Grub so I can
> remove the distro I was testing and just leave the day to day distro
> please.

That may depend on the style of GRUB installation set up by the
distribution.  If you have a /boot/grub/grub.cfg then that will have
‘menuentry { ... }’ entries matching what you see.

-- 
Cheers, Ralph.

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[Dorset] Where Grub??

[Tim]

Afternoon all on this typical wet Bank Holiday Monday.

I was going to test a new distro which I installed onto an external USB 
drive. During the install I realised I did not know where the current 
distro is installed. I decide to install Grub for the distro I was going 
to test onto dev/sda and I would find out for sure where I had installed 
grub for the installed distro I am using for when I was ready to uninstall.


Well the need to find out exactly where the day to day distro is 
installed came a lot sooner than intended as I had issues with the 
distro I was testing so I want to remove grub I installed for the distro 
was testing. When I boot up the laptop I am presented with a grub menu 
to select the installed distro on the internal ssd or the distro I was 
testing on an external USB Hard drive.


So how do I confirm if I did install grub onto dev/sda for the installed 
day to day distro. Once I have that information how do I go about 
updating Grub so I can remove the distro I was testing and just leave 
the day to day distro please.


Regards

Tim H
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