How to format 10 sectors per track?

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3 total messages Started by Michael Chen Mon, 10 Aug 1992 09:39

#73

Author: Michael Chen
Date: Mon, 10 Aug 1992 09:39

15 lines
1238 bytes

   Help!  I'm trying to write a utility to format disks for my EPS sampler.  It
uses 10 sectors per track.  I've tried BIOS 0x13 function 0x18 to set the media
to 720K (it won't accept it if I ask for 10 per track in this call), and then
copying and installing my own disk paramter table, with the "sectors per track"
entry changed to 10.
   Doing this almost works, but there are no sector 0s anywhere on the disk.
I checked my code to make sure 0 was in the format table, and it is, so I'm at
a complete loss.
   Suggestions?  Someone who knows how to do this?

-- 
_____________________________________________________________________________
| Michael Chen			| From the depths of our most lucid horrors |
|				| spring our fond hopes and pure desires... |
| mchen@groucho.cs.psu.edu	| except what comes from HELL! :-) 7/23/92  |

Re: How to format 10 sectors per track?

#375

Author: Peter Fales
Date: Thu, 13 Aug 1992 01:34

17 lines
1213 bytes

In article <BsrHI7.E16@cs.psu.edu> mchen@groucho.cs.psu.edu (Michael Chen) writes:
>
>   Help!  I'm trying to write a utility to format disks for my EPS sampler.  It
>uses 10 sectors per track.  I've tried BIOS 0x13 function 0x18 to set the media

To fit 10 sectors on a track, you have to reduce the size of the 
inter-record gaps.  I know this is possible, because I have seen
at least two packages (JFORMAT and MAXI-FORM) that will do this.
However, the BIOS routines probably aren't smart enough for this, so
you will need to go straight to the hardware.  Find a a good book,
and start playing.  Good luck.

-- 
Peter Fales			 AT&T, Room 9C-242
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UUCP:	...att!ihlpb!psfales	 Naperville, IL 60566
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Re: How to format 10 sectors per track?

#349

Author: Alexandre Pechtchanski
Date: Thu, 27 Aug 1992 19:05

17 lines
1323 bytes

You can also use shareware program 800.com (or ask it's author how he've
done it).  The program should be in many ftp sites; it puts a patch to the
BIOS, which then enables flexible formatting (like 10s*43t on 360 kb
floppies).  Unfortunately, it only works with MS-DOS 3.3+ and internal
drives.

Happy hacking!
-------

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