swapping disk with UEFI hardware - a dead end?

Kamil Paral kparal at redhat.com
Thu Jun 28 13:11:40 UTC 2012


If you are knowledgeable about UEFI, I'll welcome your advice. This is the issue I encountered:

1. I enabled UEFI mode in BIOS in Lenovo X220 (more exactly I set UEFI as the preferred method).
2. I installed Fedora 17.
3. "Fedora" item appeared in BIOS in "Boot order" and also in the boot manager if you hit F12 on device start-up.
4. The Lenovo X220 machine had a broken audio connector, so I received a replacement, exactly the same X220 machine (completely same hardware), just a different piece.
5. I enabled UEFI mode in BIOS in the new X220 machine.
6. I swapped the disk from the old X220 machine to the new X220 machine.
7. The new X220 machine pretended that the harddisk was not bootable. It behaved exactly same as if the disk was blank. When I selected to boot from HDD, it just skipped HDD and went to other boot methods (CD, network, etc). Of course there was no longer any "Fedora" item in BIOS "Boot order" or the boot manager on F12 key press.
8. I had no idea how to fix that, how to force the new machine to boot my Fedora, or how to "re-install" the UEFI item (e.g. similar to GRUB re-installation). I had to re-install the whole system.

My question obviously is:
a) Is this a hardware bug, or are UEFI machines supposed to work this way? Is this the end of disk swapping between machines?
b) Is it possible to re-install the UEFI item somehow, e.g. using a LiveCD?

Thanks,
Kamil


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