1024 cylinder limit for MFM drives?
JIM PICKERING
jrp at xtree.xtree.com
Thu Dec 20 14:31:41 AEST 1990
In article <2674 at sixhub.UUCP> davidsen at sixhub.UUCP (bill davidsen) writes:
>In article <1600 at ulowell.ulowell.edu> mschedlb at hawk.ulowell.edu (Martin J. Schedlbauer) writes:
>
>| BIOS can't handle more than 1024 cylinders. You'll need a controller
>| that does sector translation. This is what is typically done for ESDI
>| drives, as they still have the same limitations. ESDI or ST506/MFM/RLL
>| makes no difference to BIOS.
>
> SCO, ESIX, and (at least Dell) V.4 will handle >1023 very nice nicely.
>We had the same problem with ISC earlier this year. The temporary fix
>was to use only 2/3 of the disk, the long term solution was to use
>another version of UNIX.
>--
>bill davidsen - davidsen at sixhub.uucp (uunet!crdgw1!sixhub!davidsen)
> sysop *IX BBS and Public Access UNIX
> moderator of comp.binaries.ibm.pc and 80386 mailing list
>"Stupidity, like virtue, is its own reward" -me
Many MFM disk controllers have the WD1010 chip installed which cannot
handle more than 1024 cylinders. MFM controllers with the WD2010 can.
jim
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