How to fix the kernelstub.Drive : ERROR Could not find a block device for the a partition. This is a critical error and we cannot continue AND Can't update kernel and initramfs in pop_os
This applies to computers with NVMe disks
For some reason, at one point my pop_os stopped working and updating as expected. The following error appeared:
kernelstub.Drive : ERROR Could not find a block device for the a partition. This is a critical error and we cannot continue.
The source of the problem is that pop_os has at least four partitions: /boot/efi, /recovery, / and swap.
The problem is that the /boot/efi partition is not mounted.
To fix it you should look for the identification of the boot/efi partition
From a terminal, run:
lsblk -f
You should see something like this:
and you will see NOT MOUNTED the /boot/efi, so that should be blank.
To fix this, edit the fstab as follows
sudo gedit /etc/fstab
and add this line
# new for efi
PARTUUID=<copy here your UUID of the nvme0n1p1> /boot/efi vfat umask=0077 0 0
save, close and mount
sudo mount -a
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