context: this question: Ubuntu no longer boots after reinstalling graphics driver
I have reinstalled Ubuntu 22.04 according to these instructions: https://help.ubuntu.com/community/UbuntuReinstallation
I picked the same partition that my old broken installation was on, set the mount point to / and did not check format.
The installation finished without and error and then I tried to boot, but got the following error:
Gave up waiting for root file system device. Common problems:
- Boot args (cat /proc/cmdline)
- Check rootdelay= (did the system wait long enough?)
- Missing modules (cat /proc/modules; ls /dev)
ALERT! UUID=<uuid> does not exist. Dropping to a shell!
BusyBox v1.30.1 (Ubuntu 1:1.30.1-7ubuntu3) built-in shell (ash)
Enter 'help' for a list of built-in commands.
(initramfs)
After this the screen is unresponsive (I cannot enter commands here.)
After some googling I found that I should press e in the menu where I can choose between Ubuntu and Advanced Options for Ubuntu and check whether the two UUIDs mentioned there are the same (which they are).
I did notice that when I go to Advanced option and pick Ubuntu, with Linux 5.17.0-1020-oem I get the aforementioned error, but if I pick Ubuntu, with Linux 5.15.0-52-generic it boots normally, I can log, get the gnome desktop, can access the file system etc...
Once I was logged in I did a sudo grub-update, which didn't seem to change anything.
Addressing the common problems in the error message (everything done booting with linux 5.15, if that matters):
cat /proc/cmdline returns BOOT_IMAGE=/boot/vmlinuz-5.15.0.52-generic root=<uuid> ro quiet splash where is the same uuid as in the error message, no mention of a rootdelay.
cat /proc/modules returns a lot of values, that I don't understand, don't know how I would find out what is missing?
ls /dev also return a lot of output, but again I don't know how I would know something is missing.
Anyone able to help out here?
