Hi Sam,
On Sat, 29 Sep 2001 00:01:54 -0500, Samuel W. Heywood wrote:
> Hello:
> I have a problem.
> Problem:
> I have WIN95 installed in two computers.
> To some people that alone might count as two problems, both of which
> could easily be solved by "DELTREE WINDOWS", but then I would still
> have two problems in that they would both be running MS-DOS 7.00
> instead of a good version of DOS.
> What I really want to do is to boot the computers with DR-DOS 7.02
> from the A Drive. When I do this with one of my two computers the
> hard drive isn't recognized. ("Invalid drive specification" error)
> I don't know what the problem is with the computer whose hard
> drive can't be recognized by DR-DOS. Whatever the problem is, it has
> nothing to do with the BIOS date or the hard drive size.
> I have a Toshiba Satelite Pro laptop with a BIOS date of 2/26/99 and
> an 810 MB hard drive. The drive is not partitioned into separate
> logical drives. My hard drive will be recognized when I boot
> from the A drive by using a WIN95 boot disk. (MS-DOS 7.0) If I use
> a DR-DOS 7.02 boot disk my hard drive will not be recognized.
with older BIOSes, the drive/partition which is booted from has to be
smaller than 512 MB (must be within first 1023 cylinders).
> Also I have a Monorail Model 133 having a BIOS date of 7/15/95 and
> a 2.2 GB hard drive. This drive likewise is not partitioned into
> separate logical drives. On this computer my hard drive will be
> recognized when I boot from the A drive with either a DR-DOS 7.02
> boot disk or a WIN95 boot disk.
> I have always been told that DOS has problems recognizing large hard
> drive partitions if the machine has an old BIOS. Various DOS
> versions also have different limitations as to the maximum size hard
> drive partition it can recognize. In the case in point, the machine
> having the newer BIOS and the smaller hard drive will not recognize
> its hard drive when booted to DR-DOS 7.02 from the A drive. How can
> this be, and how can I fix the problem?
Try to install a diskmanager, like Ontrack. This will eat up ca. 1k of
conventional memory. It will install some kind of BIOS extension to fix
the problem. I did run such stuff with an old 486 and a 6 G HD.
Regards Joerg
-- Arachne V1.70, NON-COMMERCIAL copy, http://arachne.cz/
