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Ubuntu Server installs

There used to be minimal installers and a python commandline utility to build KVM images. Not Enterprise enough, I suppose.

There is still a minimal ISO, hidden away:

Notes on chroot'ing from SystemRescueCD or the like

You can mount it like so:

# Mounting a classic MBR/Legacy install
sudo mount /dev/sda1 /mnt
# Or, mounting a UEFI install, you may find the first partition is actually an EFI partition rather than your root. So instead it's more like:
sudo mount  /dev/sda2 /mnt
sudo mount /dev/sda1 /mnt/boot/efi

# Either way, then mount all the devices from the live session
sudo mount --bind /dev /mnt/dev
sudo mount --bind /dev/pts /mnt/dev/pts
sudo mount --bind /proc /mnt/proc
sudo mount --bind /sys /mnt/sys

# And now chroot into a shell in your existing install
sudo chroot /mnt

But if you're fixing GRUB on an EFI system and have booted into SystemRescueCD (or a live Kubuntu USB or such) in UEFI mode you may then find that running grub-install returns

grub-install: warning: EFI variables cannot be set on this system.
grub-install: warning: You will have to complete the GRUB setup manually.

You just need to run grub-install --removable to avoid that, having bootstrapped into this via EFI USB boot was how I got there myself certainly as per https://superuser.com/a/1749282

Last Author
keithzg
Last Edited
Jul 26 2023, 5:32 PM