Hello, I encrypted my hard drive with LUKS and forgot my password a few days ago. As a result I have decided to wipe the hard drive and install Ubuntu instead of PureOS since I cannot regain access. I created a Bootable Ubuntu USB drive and just installed Ubuntu 22 onto my Librem 14, but when I turn it on it just shows a red screen saying “no bootable OS was found on the default boot device /dev/sda1”
If I try to boot in any way at all it just shows me the error on the screen. What do I do? How do I get Ubuntu working now on my Librem 14? It doesn’t seem like I can get it to boot at all including from a USB now. Please help.
Is there something I can put in the recovery shell to recover from this? I can access the recovery shell but not sure what to do now. I need this laptop for work so getting it fixed today is ideal.
I just did a factory reset and I am able to get back to the option to boot from USB, but now that I am here, how do I install Ubuntu as the default OS for this machine?
Pureboot requires a dedicated unencrypted /boot partition, which the Ubuntu installer doesn’t do by default. Assuming you want to keep using Pureboot with the Librem Key, you’ll need to manually create the partitions via the ‘Something Else’ option:
Remove all existing partitions
create a 3GB ext partition with mount point /boot
create another ext partition using the rest of the available space, with mount point / (root)
select the option to encrypt the root partition using LUKS if/when presented
reboot when done
perform a Pureboot factory reset (it should prompt you for this)
Maybe just try. It’s a new install so what’s the worst that can happen?
Maybe noone in this forum uses Ubuntu with Pureboot. There are probably better fora in which to ask about installing Ubuntu generally.
I would guess that if you reflash the firmware to replace Pureboot with Coreboot (conventional BIOS arrangement) then you could do a default install of Ubuntu.
