Deleted a partition, now getting 'Gave up waiting for suspend/resume device' message during boot
The key was to figure out that the initial RAM disk is "compiled", and in some case (like this), must be regenerated. Solution: sudo update-initramfs -u.
From: https://superuser.com/questions/1204627/deleted-a-partition-now-getting-gave-up-waiting-for-suspend-resume-device-mes/1204634