7 Nov
2007
7 Nov
'07
6 p.m.
On Wed, 2007-11-07 at 15:26 -0800, Fred Cisin wrote:
nifty. I'll give that a try as well.
Brian
On Wed, 7 Nov 2007, Brian Wheeler wrote:
It hit 4K exactly -- the linux driver started complaining when trying to
read sector 9, which meant that 8 worked...
However, trying to read a kaypro formatted disk
isn't working. It reads
4K and then fails. Anybody used setfdprm on linux to set up reading
kaypro iv/10 disks? They look like they're 10 sector (numbered 0x0a -
0x13), rate=2 disks.
Sure that isn't 5K before failure? Notice that side "B" of a disk formatted by
Kaypro does NOT have the
correct value for "head number" in the sector headers. With a PC (NEC765
type chip), you will have to go below the BIOS (Int13h) for reading those
sectors. It is not very hard to do, but can introduce some additional
fun, particularly with relatively new machines.
Interesting. I'll look at the setfdprm documentation to see if its
possible to fudge the sector number.
I'll probably mount the 5.25" DSDD drive
in my linux box as well, but
it'd be nice to know how to read disks without hassle :)
TRY formatting the disk IN KAYPRO FORMAT on the PC. The good news (what
little there is) is that the Kaypro (WD type chip) although it puts the
wrong value for "head number" in the sector headers, does not object to
finding the correct value there.
--
Grumpy Ol' Fred cisin at xenosoft.com