17 Mar
2002
17 Mar
'02
8:05 a.m.
On Sun, 17 Mar 2002, Joe wrote:
At 01:20 PM 3/17/02 -0600, Doc wrote:
Our experience differs, Joe. I have never had a problem creating QD
disks on a 1.2 drive.
- don
On Sun, 17 Mar 2002, Marvin Johnston wrote:
That MIGHT work but I don't recommend it. The 1.2M drive has
compatibility problesm with the 360k drives and it has the sme compatility
problems with the QD drive. You need a drive that's designed for QD and
you need QD disks if at all possible. QD disk have the same coercivity
(SP?) as 360k disks and 1.2M disks use a different coercivity.
I just took a look at the docs for the Series 5 Altos computers and
there is a repair ticket for a Mitsubishi M4853 Disk Drive. The floppy
disk summary docs indicate that drive is a 5.25, HH, 720K, 96 TPI drive.
So, this means I can make disks from image with a vanilla 5.25 1.2M
drive, on a Linux box, right? Assuming I have DSDD floppies and use the
correct device (/dev/fd0D720) with dd?
Alternatively, is there any reason I couldn't temporarily move the
drive itself to a PC to build the disks?
That should work as long as the PC understands the file structure. You
may need to use 22disk or something similar that understands the Altos
structure.
Joe