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Out of memory when booting after failed 22.04 upgrade

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An update from 20.04 to 22.04 failed. When rebooting, the system now hangs right after grub with the message error: out of memory and some more details:

VFS: Cannot open root device "UUID=..." or unknown-lock(0,0): error -6
Please append a correct "root=" boot option; here are the available partitions:
Kernel panic - not not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
CPU: 0 PID: 1 Comm: swap/0 Not tainted 5.15.0-56-generic Ubuntu
Hardware name: TUXEDO P65_67HSP/P65_67HSHSP, BIOS 1.05.07 06/26/2017 06/26/2017

When attempting to use an older kernel, I get the error Gave up waiting for root file system device. with details ALERT UUID=... does not exist. Dropping to a shell!. Then I am presented with an initramfs prompt.

Running boot-repair from a live USB created this paste recommending reinstalling grub-efi: https://paste.ubuntu.com/p/V5pnvsDYxN/.

Should I run the recommended repair? Can I somehow run dpkg --configure -a from the live USB to repair the main system?

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