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From: cbouscho@umn-d-ub.D.UMN.EDU (Charles Bouschor II)
Newsgroups: comp.sys.mac
Subject: D1 error
Keywords: Disk Optimize, SUMII
Message-ID: <3062@umn-d-ub.D.UMN.EDU>
Date: 7 Dec 89 22:58:10 GMT
Distribution: na
Organization: U of Minnesota-Duluth, Information Services
Lines: 21

I recently read about the problems with the D1 error, and the failure of
SUM II to optimize all of the hard disk...I too sufferred from this
malady.  Here is what I found.

I called SUM II people and they said that the error was due to a lost
file, cluster ect.  I should run the Apple utility Disk First Aid and it
will fix the problem.  Then I should re optimize the drive.  I was
sketical that this would work because I had not had any problem with the
drive prior to running SUMII.  I humbly tried disk first aid...damn they
were right.  When I reoptimized viola...all fixed, packed and tucked
away.  

I did this with a mac + and a CMS 20 meg external drive, and a IIcx
internal 40 meg.

Hope this helps!

be free...think globally and act locally...don't do dos
Charles Bouschor II
UMD Athletic Dept.
cbouscho@ub.d.umn.edu