[comp.sys.att] Smaller cluster size for 20M hard disk on 6300

beck@husc4.UUCP (02/06/87)

Summary:Can MSDOS do for the 6300 what PCDOS can do for the PC
Sender:Nathaniel Beck, Dept. of Gov.
Keywords:Cluster size

There have been several postings about how to reduce cluster size on a
hard disk from 8K down to either 1,2 or 4K. These postings were for the
IBM PC and do not seem to have worked for the 6300 (using MSDOS 3.1).

Does anyone know how to reduce cluster size on a 20M hard disk.

Thanks in advance.

Nathaniel Beck, Dept. of Gov., Harvard U.

aptr@ur-tut.UUCP (02/10/87)

In article <1177@husc6.UUCP> beck@husc4.UUCP ( beck) writes:
>There have been several postings about how to reduce cluster size on a
>hard disk from 8K down to either 1,2 or 4K. These postings were for the
>IBM PC and do not seem to have worked for the 6300 (using MSDOS 3.1).

The only way to reduce the cluster size on the AT&T 6300 (or Xerox 6064) is
to change over to PC-DOS 3.x (x>=1).  The exact reasons for this are unclear
to me, but it boils down to the fact that MS-DOS 3.x will not support
the smaller cluster size.  If you are worried about loosing features
of the 6300, the only thing that is lost is the auto time setting feature.
This is easily fixed by adding a line to your AUTOEXEC.BAT that calls 
a simple program to read the internal clock.  BTW  Xerox sells PC-DOS 3.21
as an upgrade to AT&T(Xerox) DOS 3.1, and I think it comes with a clock
reading program.


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