[rescue] Anybody remember MFM? (Durango Poppy II problem)
walter+rescue at belgers.com
Wed Aug 6 02:17:23 CDT 2003
> MFM (and RLL) formatting was not standardized across controllers. Format
> your drive on a WD controller, and move it to blah controller and it
> won't work... you need to low level format to match the controller.
Ah, I didn't know.
> In this case you need to find out how low level formatting is supposed to
> be performed.
I found a 'test disk' with some tools, but any tool that tries to
read/write the harddisk fails, so the controller is probably broke.
> It sounds like the system has a bridge controller... either SASI or SCSI
> to MFM. Is there any information on the bridge controller. Adaptec
> made a SCSI->MFM bridge (Sun used these in Sun-2 and early Sun-3).
> Emulex may have also made one. Xebec made a SASI->MFM bridge.
There is some sort of ISA backplane, in which there are CPU, memory,
floppy controller, disk controller boards. The disk controller is marked
'Molecular Systems korea'.
> Low level formatting is probably done through some utility, possibly
> booted off of a diagnostic disc, or since this is PC based,
Probably one of the programs (they all have cryptical names) that fails
to read/write the disc.
> >Why not? SCSI-2 drives should work on a SCSI-1 controller?
> If it is SCSI... it could be SASI.
Hm, then I guess I'm out of luck.
Walter Belgers "Si hoc signum legere potes, operis boni in rebus
walter at belgers.com Latinis alacribus et fructuosis potiri potes!"
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