Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!usc!apple!ames!pasteur!cory.Berkeley.EDU!chao
From: chao@cory.Berkeley.EDU (Chia-Chi Chao)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Toshiba Drive Info Wanted
Message-ID: <15221@pasteur.Berkeley.EDU>
Date: 6 Jul 89 21:31:33 GMT
References: <15131@pasteur.Berkeley.EDU> <895@ole.UUCP>
Sender: news@pasteur.Berkeley.EDU
Reply-To: chao@cory.Berkeley.EDU.UUCP (Chia-Chi Chao)
Distribution: usa
Organization: University of California, Berkeley
Lines: 16

In article <895@ole.UUCP> ray@ole.UUCP (Ray Berry) writes:
>
>     The Toshiba MK134 has 7 heads and 733 cylinders.  Write precompensation
>is specified for cylinders 512 up.  Access time averages 25 msec.
>     This drive works fine for RLL - it formats to 68 megabytes.  If you 
>choose to operate it this way, avoid the Adaptec 2372 controllers - they do
>not support write precomp.  The DTC 7287 does.

Thanks a lot for the info.  The mail bounced, so I am posting this here.

I am using the DTC 7287 controller.  Right now, it is set to type 21 which has
write precomp at 300.  Is there such thing as "over compensation"?  Should I
low level reformat it as non-standard drive?  Only a single bad sector, and
SpinRite reported access time of 24 ms.  Very nice drive!

Thanks.   Chia-Chi      chao@cory.berkeley.edu