Re: How do I mount the USB stick containing the installer in Rescue Mode?
On Thu 15 Jul 2021 at 11:43:26 (+0200), Stella Ashburne wrote:
> Debian Bullseye's installer is on a USB stick and I used it to boot into Rescue Mode. If it's of any relevance, the partition table type is GPT, with UEFI+Secure Boot enabled.
>
> After booting into Rescue Mode and filling out the required details onscreen, I chose /dev/perfect-vg/root as the device to use as root file system. If you may recall, the volume group perfect-vg is LUKS-encrypted.
>
> When asked if I wanted to mount the separate /boot/efi partition, I entered No.
>
> Next, I entered Executive a shell in /dev/perfect-vg/root
>
> I typed the command nano /etc/apt/sources.list and commented out all the lines therein.
>
> I added the the following line:
>
> deb [trusted=yes] file:/media/myusb bullseye main
>
> I saved the sources.list file.
>
> I created a directory called /media/myusb and issued the following command to mount the USB stick to it:
>
> mount /dev/sdb1 /media/myusb
Presumably given as root.
> The error message is:
>
> mount: /media/myusb: /dev/sdb1 already mounted or mount point busy
Type:
$ ls -l /dev/disk/by-label/
to see what the kernel called your stick. Debian installers have LABELs.
> Below are the results of cat /etc/fstab
>
> <file system> <mount point> <type> <options> <dump> <pass>
> /dev/mapper/perfect--vg-root / ext4 errors-remount-ro 0 1
> /boot/efi was on /dev/sda1 during installation
There's a # before that line
> UUID=A30E-2C33 /boot/efi vfat umask=0077 0 1
> /dev/mapper/perfect--vg-swap none swap sw 0 0
> /dev/sr0 /media/cdrom0 udf, iso9660 user, noauto 0 0
> /media/myusb
That line looks spurious. If you put it there, I would remove it for
the time being. When you mount a USB stick as root, you don't need
an entry in fstab, but you do need to create a mount point first.
Of course, this has been done for you as a convenience: there is
a /mnt directory specifically for temporarily mounting a device.
Cheers,
David.
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