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I'm setting up an old box with Debian (etch, to be upgraded to squeeze; but only etch still has boot floppies).

I have read that old BIOS versions do not support boot disks larger than 8.4 GB ("int 13 problem").

Other than that, what may be limitations and reasonable maximum sizes of a boot disk and/or partition?

Could I run into problems if the disk is only 2.1 GB anyway?

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