[Coco] problem transferring DSK files to disk
vburke at skow.net
Wed Aug 24 18:06:24 EDT 2005
Disk formats perfectly under MSDOS with verify on.
MB is an unmarked Athlon "Classic" (Slot A), floppy drives attempted are
Chinon FZ-354 (720), Teac FD-35-FN (720), generic 1.44.
No jumpers on the 720's except for the drive selects, 720's jumpered to
DS1 (using a twisted cable, the generic 1.44 is A).
Roger Merchberger wrote:
> Rumor has it that Vern Burke may have mentioned these words:
>> Greetings all:
>> [snip] I know the drives and the media are OK, since they'll format
>> under DOS.
> Not to sound like a BOFH, but that's rather like saying that you know
> the transmission works because you can start the engine.
> Before you format the media again, type this DOS 6.x command:
> VERIFY ON
> Unlike OS-9, VERIFY in DOS is *off* by default - those disks could be
> loaded with errors, but you'll never know it unless you issue a CHKDSK
> command or make sure that VERIFY is on first - the format will take
> twice as long, but at least you'll know if it actually wrote what it was
> supposed to.
>> Any attempt to use a 720 drive results in various write errors
>> (I've tried 4 different drives). Any attempt to use a 1.44 (with DSDD
>> media) drive appears to complete properly but fails to boot on the CC3
>> (drops back to OK after giving the DOS command).
> What type of hardware are you using (Mobo/Controller/Floppy Drive
> Nomenclature) and if the floppy drives have jumpers, anything special?
> Also, if you're just booting from a DOS floppy, you might want to boot
> from a Linux floppy instead - the 'fdformat' command has a lot more
> flexibility to it WRT sector counts/sizes/etc. than the DOS 'format'
> command. I *think* I read somewhere that with the correct switches, you
> can low-level format a CoCo floppy (35/40/80 track, 18 sector, 256
> bytes/sector) right from Linux.
> That said, I've not done much at all for many years for xferring disks
> to/from CoCos, so all I've said may be pure guano. ;-)
> Roger "Merch" Merchberger
> Roger "Merch" Merchberger -- SysAdmin, Iceberg Computers
> zmerch at 30below.com
> What do you do when Life gives you lemons,
> and you don't *like* lemonade?????????????
More information about the Coco