(begin quote)
The partition table in the MBR (and IDE drives, I think) can contain
up to four entries for "primary" partitions. If there are logical
partitions, one of these entries is a "container" partition for the
logical partitions. There is not a problem accessing more than one
primary partition under DOS. I have a 386 with MS-DOS, PTS-DOS and
FreeDOS on separate bootable partitions. Each OS can readily access
all three partitions.
Ken Martwick
(end of quote)
I didn't know DOS (and OS/2?) could recognize more than one primary partition on
a hard drive, though I wondered how DOS or OS/2 would decide which primary
partition to recognize when booting from a different drive. OS/2 Warp 3
documentation says multiple primary partitions on a hard disk are all drive C
(on a one-hard-disk system), with only one being accessible at a time.
What are your drive letters, and do the at least two non-C DOSes like to boot
from non-C drive?
Which DOS do you like best, and how if FreeDOS doing? Is FreeDOS up to serious
business? Ever run Arachne under FreeDOS?