I'm trying to move my root directory from sda5 to sda3. After running grub2-install and grub2-mkconfig, my machine will not boot. I performed the changes using a F33 live DVD which also fails to boot. After plugging in a USB-connected SD card with Centos 7 on it, the F33 live DVD decided to boot. It is what I am running now. The complaint is UUID 2b82edc2-4eb2-44a0-8b5b-c71da0de9b3a not found. While running F33 live DVD I get blkid | grep 2b82edc2-4eb2-44a0-8b5b-c71da0de9b3a /dev/loop1: LABEL="Anaconda" UUID="2b82edc2-4eb2-44a0-8b5b-c71da0de9b3a" BLOCK_SIZE="4096" TYPE="ext4" /dev/mapper/live-rw: LABEL="Anaconda" UUID="2b82edc2-4eb2-44a0-8b5b-c71da0de9b3a" BLOCK_SIZE="4096" TYPE="ext4" /dev/mapper/live-base: LABEL="Anaconda" UUID="2b82edc2-4eb2-44a0-8b5b-c71da0de9b3a" BLOCK_SIZE="4096" TYPE="ext4"
I backed up sda5 with rsync -auHAXUUx . I copied from the backup with the same flags. I edited the new etc/fstab to point at sda3, actually LABEL=local3slash .
As root: grupb2-install grub2-mkconfig -o .../local3slash/boot/grub2/grub/cfg
Reboot failed and sent me to grub rewscue mode, about which I know nothing.
From .../local3slash/boot , grep -r -F 2b82edc2-4eb2-44a0-8b5b-c71da0de9b3a . ./grub2/grub.cfg: search --no-floppy --fs-uuid --set=root 2b82edc2-4eb2-44a0-8b5b-c71da0de9b3a ./grub2/grub.cfg: search --no-floppy --fs-uuid --set=root 2b82edc2-4eb2-44a0-8b5b-c71da0de9b3a ./grub2/grub.cfg: search --no-floppy --fs-uuid --set=root 2b82edc2-4eb2-44a0-8b5b-c71da0de9b3a ./grub2/grub.cfg: search --no-floppy --fs-uuid --set=root 2b82edc2-4eb2-44a0-8b5b-c71da0de9b3a ./grub2/grub.cfg: search --no-floppy --fs-uuid --set=boot 2b82edc2-4eb2-44a0-8b5b-c71da0de9b3a ./grub2/grub.cfg: search --no-floppy --fs-uuid --set=boot 2b82edc2-4eb2-44a0-8b5b-c71da0de9b3a ./grub2/grub.cfg: set kernelopts="root=UUID=2b82edc2-4eb2-44a0-8b5b-c71da0de9b3a ro "
What is going on and what can I do about it?