System doesn't boot (fail to mount) and GRUB menu non existent for troubleshooting

Support and Troubleshooting
2

I solved the problem in 2 steps:

  1. I unlocked the root user:
    To unlock the root user I booted from a live USB, then mounted the HDD with Umbrel, and used the “chroot” method to root into the file system and change its root’s user password. Here are the commands I used:
lsblk
sudo mount /dev/sdc2 /mnt/c2
sudo mount /dev/sdc1 /mnt/c1
sudo mount -t proc none /mnt/c2/proc
sudo mount --bind /sys /mnt/c2/sys
sudo mount --rbind /dev/ /mnt/c2/dev

sudo /usr/sbin/chroot /mnt/c2
sudo passwd root
exit

Then reboot into the HDD and the emergency mode allowed me access to root.
Then I used the journalctl -xb command and saw that the HDD mount was timing out after 3 minutes (Umbrel OS is VERY IMPATIENT)

  1. To fix the mount error, I added the mount option “x-systemd.mount-timeout=600” in /etc/fstab for the /data partition
    So the line in my fstab file looks like this:
/dev/disk/by-partuuid/d1d36e34-2753-4dc7-96eb-3c9b5584e867   /data          auto       defaults,x-systemd.growfs,x-systemd.mount-timeout=600      0  0

In summary:
Umbrel should unlock root user by default so we can troubleshoot in cases like these, and it should also add more patience for the mount process, by default.

Node couldn't boot after upgrading to Umbrel OS 1.2