Dead RF31 DSSI Disk.. final Question..

[Holm Tiffe]

Holm Tiffe wrote:

> Johnny Billquist wrote:
> 
> > On 2015-05-12 11:55, Holm Tiffe wrote:
> > >Ok, the disk passed the tests with ok.
> > 
> > Excellent.
> > 
> > >I've tried to boot something from DIA0 DIA1 and DIA2..nosurchfile so the
> > >disks seems to be empty.
> > 
> > Oh Well...
> > 
> > >Now I think about a reformat of the drives, but there is no such procedure.
> > >There is an erase program that should rewrite eachs sector with several
> > >patterns. I'll think that it will do the job.
> > >Does an format programm exists "in the field"  or is something like thisi
> > >proprietary to DEC?
> > 
> > Why would you want to reformat the drives?
> > That said, I would expect such a utility to exist in the firmware of the 
> > drive.
> > But normally, since these drives remap bad sectors automatically, you 
> > should normally just go on using them, and everything is ok.
> > 
> > 	Johnny
> 
> The exerciser showed some correctable soft errors, wich is pretty much
> normal I think. Reformating the drive should simply "freshen up" the data
> tracks but erase should do the same in this regard.
> Since the distks aren't containing anything interresting, it would be the
> right time now to do a reformat.
> I think the head assembly has an voice coil engine anyways, so servo tracks
> are needed to do the positioning. It is clear that they aren't affected from
> a reformat...
> 

Johnny the success proves that I'm right. After "erasing" the disk the
exerciser run found no soft read errors anymore. "Soft error read count 0".
BTW: This was the disk that I've hammered :-)


Regards,

Holm
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