The disk.
Disk /dev/sdc: 465.76 GiB, 500107862016 bytes, 976773168 sectors
Disk model: CT500BX500SSD1
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: E550AE98-12A4-4E8B-919D-A6B16CEB1879
Device Start End Sectors Size Type
/dev/sdc1 2048 1026047 1024000 500M EFI System
/dev/sdc2 1026048 9414655 8388608 4G Linux swap
/dev/sdc3 9414656 145729535 136314880 65G Linux filesystem
I want to set sdc3 as bootable. Internet advice is to use option “a” using fdisk. There is no option “a”. I tried gdisk but couldn’t get anywhere. Please advise.
@ionmich that doesn’t work for UEFI boot and a GPT disk.
So how do I make /dev/sdc3 bootable? I am following the instructions from How to Migrate the Root Filesystem to a New Disk | Support | SUSE
Add to the NVRAM to point at /dev/sda1 which is where the files are to boot from.
Check you system BIOS and see if you can browse to EFI/opensuse to add the respective efi file.
Thanks for you advice. I was cloning my boot drive and following the instructions in How to Migrate the Root Filesystem to a New Disk | Support | SUSE.
Much to my surprise after using dd to copy my boot drive to an exactly the same model drive, I was able to boot it with no further modifications. Much simpler than the instructions.
That page is obsolete. Nowhere on that page are the strings UEFI , ESP or efibootmgr to be found in either upper or lower case.