from Richard Menedetter & Sam Heywood:
29 Sep 2001, "Samuel W. Heywood" <[EMAIL PROTECTED]> wrote:
SH> could easily be solved by "DELTREE WINDOWS", but then I would still
SH> have two problems in that they would both be running MS-DOS 7.00
SH> instead of a good version of DOS.
Why is DOS 7 not a good version ??
I have never seen/heared of any problems with it.
Have you experienced any ?
SH> What I really want to do is to boot the computers with DR-DOS 7.02
SH> from the A Drive. When I do this with one of my two computers the
SH> hard drive isn't recognized. ("Invalid drive specification" error)
hmmm .. Thomas has had such problems IMHO ... maybe he knows more about it.
I haven't heared of such problems.
SH> I have always been told that DOS has problems recognizing large hard
SH> drive partitions if the machine has an old BIOS.
These were BIOS problems.
But many OSes like Linux or Windows NT, did not use the BIOS, so they could
access the drive.
SH> Various DOS versions also have different limitations as to the
SH> maximum size hard drive partition it can recognize.
??? really ???
IMHO not ... the max size for a fat16 partition is 2 GB.
SH> How can this be, and how can I fix the problem?
Don't use DrDOS ... it seems like a bug in it.
I don't know any patch that would cure this drdos behaviour.
(end of quotes)
My problems accessing that hard disk partition were "Invalid media" and occurred
with MS-DOS and MS-Windows 98SE emergency boot disk but not with DR-DOS,
OS/2 Warp 4, or Linux.
On that hard disk not recognized by DR-DOS 7.02, how many actual cylinders does
it have, and how many virtual cylinders? Virtual cylinders would differ from
actual cylinders if the hard disk is accessed by Large or LBA. Maybe the
manufacturer of that BIOS was slower updating the technology than the
manufacturer of the other BIOS? Would MS-DOS 7.00 or Win95 recognize a FAT16
partition that goes above the BIOS limit?
Maybe access that hard disk with Linux?
