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  • Well Linux can't detect anything, it's not loaded yet. I'm having a hard time understanding your scenario. If you can configure the bootloader, why not put only the right entry there? Commented Dec 11, 2012 at 9:18
  • yes, is a complex requirement, I know. And I also know that is quite impossible for linux to make somethink at that early stage because is not yet loaded. Nut I'm looking if there are some way to check what is the right disk in order to select automatically the right boot entry for grub. Commented Dec 11, 2012 at 10:46
  • I can't put myself the right entry because there is a lot of this PC also on far isolated site, and people that go there to do maintenance are not always able to check the right boot disk to the right PC. You have to consider that both PC and disk are spare time that should be changeg when they are damaged and the requirement is to avoid tha maintenance people have to manage with different disk for different type of PC. Commented Dec 11, 2012 at 10:47
  • I still don't understand. Who installs & configures the bootloader? Isn't it installed on the disk we're talking about? Who creates & prepares those disks? Is there more than one disk on those machines? Commented Dec 11, 2012 at 12:47
  • The disk should be replaced because of a damage. In thies case the new disk should have a default device not compatible with the PC on wich it will be mounted. All this is thinked to allow maintenance by people that didn't know linux. Commented Dec 11, 2012 at 14:31