Dne, 25. 11. 2010 16:37:17 je Hugo Vanwoerkom napisal(a):


So say I install squeeze amd64 in partition sdb3. But want to boot partition sdb6 which is i386 and older than partition sdb3. Then the grub that is called is the amd64 grub that was installed with squeeze amd64, but will it correctly boot the older i386 sdb6 partition?


In a perfect world, that's exactly what would happen. Sometimes, however, Grub doesn't pick up all your older installs correctly, so you may have to edit its grub.cfg by hand.

As Camaleon said, a good strategy is to have self-sufficient Grub installs on each of your partitions, and just "daisy-chaining" the other Grubs from your newest (default) Grub. I even have a couple of Ubuntu ISO images daisy-chained from my Grub, just in case.

As for the i386/amd64 dichotomy, I don't think Grub is affected in the least. All he does is juggle disk block addresses.

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