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Re: 77-track "Japanese style" disks

Posted: Tue Feb 19, 2013 11:57 am
by IFW
Calibration checks the individual track positions that work with your drive mechanics.
Most drives can access more tracks than the minimum standardized values although they might have issues with accessing data stored on the additional tracks.

Re: 77-track "Japanese style" disks

Posted: Tue Feb 19, 2013 11:01 pm
by clemfm
Can anyone supply model numbers of any 5.25 inch 77/1024/96 drives?

Re: 77-track "Japanese style" disks

Posted: Fri Aug 02, 2013 1:27 pm
by clemfm
Okay, I'm back onto trying to archive a few 5.25" 77 Track disks.......

How does this look:
dtc -test.raw -v360 -k1 -d0 -e77 -oe77 -t10 -i0

I see the previously proposed -ec options has appeared, as -oe. I'm not sure if the "end track" is 76 or 77 i.e. 0 to 76 = 77?

The image will be used with the HxC2000 FDD Emulator.

Clem

Re: 77-track "Japanese style" disks

Posted: Fri Aug 02, 2013 2:24 pm
by IFW
If you want to stop the imaging at track 76 add -e76 at the end.
Based on your command, assuming you want the stream files as well as an image file I'd use:

[double sided]
dtc -ftest.raw -i0 -ftest.img -v360 -oe76 -i4 -t10 -e76 -l8

[single sided, side 0]
dtc -ftest.raw -g0 -i0 -ftest.img -v360 -g0 -oe76 -i4 -t10 -e76 -l8

77 tracks are track numbered from 0 to 76. Parameters always use inclusive values; you want to stop on track 76.

Re: 77-track "Japanese style" disks

Posted: Sun Aug 04, 2013 11:16 am
by clemfm
Okay, as per the previous post, I used:

dtc -flbb1bu.raw -i0 -flbb1bu.img -v360 -oe76 -i4 -z2 -t10 -e76 -l8

And the resultant error log is attached.

I take it that this disk has gone to God? :(

Clem

Re: 77-track "Japanese style" disks

Posted: Sun Aug 04, 2013 1:48 pm
by IFW
Does not look very good for track 0... you can try and clean it with IPA.

Re: 77-track "Japanese style" disks

Posted: Sun Aug 04, 2013 11:15 pm
by clemfm
IFW wrote:Does not look very good for track 0... you can try and clean it with IPA.
I was equally concerned about the further errors on several subsequent tracks?

Re: 77-track "Japanese style" disks

Posted: Mon Aug 05, 2013 7:24 am
by mr.vince
So start with IPA...

Re: 77-track

Posted: Mon Aug 05, 2013 8:01 am
by Jeff_HxC2001
One small note : Many Japanese systems use the FM / Single density encoding on the first track.
Be sure that this is not the case here.

Re: 77-track "Japanese style" disks

Posted: Wed Apr 03, 2019 9:44 pm
by ssybesma
Can a 40-pin IDE SuperDisk drive be made to work with a KryoFlux using an adapter that converts to 34-pin?

I have one (besides a couple normal 1.44MB 3.5" Sony diskette drives).