4 Aug
2003
4 Aug
'03
8:09 p.m.
On Mon, 4 Aug 2003, Joe wrote:
Unfortunately, the R command in DEBUG in MS/PC-DOS will balk at reading
even raw sectors if it doesn't see an MS/PC-DOS style partition table in
the first sector of the drive, and an MS/PC-DOS style "boot record" in the
first sector of each partition.
There have also been variations in sector size and sector numbering that
will stop the R command of DEBUG. (MS/PC-DOS uses 512 bytes per sector,
and the sectors on hard drives are numbered 1 - 17) If the alien system
numbers 0 - 16, or uses a sector other than 512 bytes, then DEBUG won't be
happy.
But it IS possible to read a lot of stuff other than MS/PC-DOS
using INT 13h
--
Fred Cisin cisin(a)xenosoft.com
XenoSoft http://www.xenosoft.com
Not much. Put
an ST506 controller into a PC. ST506/412 was the defacto
standard on PCs until IDE. although most PC people erroneously refer to
the cabling and interface as "MFM". The controllers used by IBM in the XT
were made by Xebec.
Once you have a controller and drive in your PC, you can write the code to
read and write sectors to be able to copy a drive.
I don't think youd even
have to write any code. You could boot it from a
DOS disk and use Debug to read the raw disk sectors and write them to the
new drive.