Do you have the appropriate IDE hardware/software to handle 13Mb virtual drives?
He had 80gig working, so I'd imagine he has.
Each drive must be tested and validated before the system gets out of DOS and goes into the Startup-sequence, LoadWB, User-startup, etc. This obviously takes a bit of time. It could be several minutes if your software isn't optimised for 'Large' partitions (ie bigger than '4Gb').
That's just load of bollocks.
No validation is done at all when the partitions are ok. Validation only happens if drive is found to be in invalid state.
You can't optimize software for large partitions. You can have large partition support, but has nothing to do with speed. If the application has no large partition support (disk repair tool, reorg tool etc), it will *corrupt* RDB/partitions that lie on <4gig area when accessing data past the 4gig barrier.