ALTERNATE: Seeking Old Overlay for Quantum Hard Disk Drive

[Brad]

Hi,

Thanks to everyone who responded to my original post (see below).

ALTERNATE:

I will settle for access to the second partition once in a while so
I can use that space for storage. I once used "Sector Access"
(I downloaded from www.simtel.net) and edited the MBR sector to
make the second partition the "active" partition, but that didn't "work".
Note: I first saved the MBR to a floppy before I edited. Do you know
of a scheme I can use to access the second partition?

Thanks in advance, Brad

 

[Ralph Mowery]

Try this. It is suspose to work in dos.

http://www.storagedrivers.com/drivers/39/39811.htm

You may find some information here also.

http://www.ameriwebs.net/groupworks/index.html

 

[mike]

Hi,

Thanks to everyone who responded to my original post (see below).

ALTERNATE:

I will settle for access to the second partition once in a while so
I can use that space for storage. I once used "Sector Access"
(I downloaded from www.simtel.net) and edited the MBR sector to
make the second partition the "active" partition, but that didn't "work".
Note: I first saved the MBR to a floppy before I edited. Do you know
of a scheme I can use to access the second partition?

Thanks in advance, Brad

Early Quantum drives were supplied with Ontrack overlay software.
First, the BIOS has to be able to access the drive. Looks like this is
ok if you can read the first partition.
Second, the overlay software has to be used to fdisk/format the drive.
The overlay rewrites the partition table in RAM on the fly.
The version or the os shouldn't matter.

You cannot just stick in a formatted drive and expect to access it via
the overlay.
Once it's set up with the overlay, you can't just stick it back into
another computer and expect it to be accessible. It might, but it might
also trash itself and the other disks on the computer.
mike
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[Franc Zabkar]

Hi,

Thanks to everyone who responded to my original post (see below).

ALTERNATE:

I will settle for access to the second partition once in a while so
I can use that space for storage. I once used "Sector Access"
(I downloaded from www.simtel.net) and edited the MBR sector to
make the second partition the "active" partition, but that didn't "work".
Note: I first saved the MBR to a floppy before I edited. Do you know
of a scheme I can use to access the second partition?

Thanks in advance, Brad

A generic disk overlay is available here:
http://www.oldfiles.org.uk/powerload/harddisk.htm


======================================================================
http://www.oldfiles.org.uk/powerload/download/dmd522.exe

======================================================================
Disk Manager for DOS Version 5.22 by Ontrack (1993) ~ 210Kb Download

Includes 'Dynamic Disk Overlay' to break the 528MB Barrier on older
drives, Supports IDE/EIDE & SCSI Drives as well as older ESDI, MFM and
RLL drives with some limitaions. Designed for use upto MS-DOS 5.0, but
will support MS-DOS 6x This version does not support FAT32 Partitions.
======================================================================


- Franc Zabkar