Breaking change in cryptsetup 2.6.1-3

anon89812132 · 5 April 2023 05:05

Please follow the announcements

[Stable Update] 2023-03-31 - Kernels, Plasma 5.27 LTS, Pamac, Phosh, Mesa, LibreOffice

GRUB, LUKS and full disk encryption: ‘no such cryptodisk found’

Following grub’s update, new configuration may be needed to be manually applied:

Check for modifications to /etc/default/grub
Most notably, if you use LUKS with full disk encryption, you may need to:

check that GRUB_ENABLE_CRYPTODISK=y is not commented out

Don’t use tools like grub-customizer as it may create issues with the grub.cfg file.

Check if the UUID of your encrypted drive matches in your config files.

Based on the manual , unlike filesystem UUIDs, UUIDs for encrypted devices must be specified without dash separators. So check /boot/grub/grub.cfg for entries like cryptomount -u 3722dfb2-3b32-414b-bd59-4329fa92b6a9 and try to remove the dash separators.

If you modified the above configuration, you then need to update the grub menu with sudo update-grub.

A message “no such cryptodisk found” may appear on the following reboot, but should not prevent you from continuing by typing any key.

You may still want to have a liveUSB ready, in the rare case your bootloader does break, in which case you will need to reinstall grub .

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