In a msg on , Siegfried Zuhr of 2:500/104.6376 writes:
 SZ> Hello,
 SZ> Is there someone who nows if there are any tools to 
 SZ> repair/rebuild an Autocad file after an crash? I have a few 
 SZ> Acad files that are damaged by the attack of a series of 
 SZ> cross-links. The files are readable by DOS but Acad refuges 
 SZ> them. Is there something that stripes out the entities that 
 SZ> are not recognised by Acad and stores the rest to a result 
 SZ> file? Then we would only lost part of the drawings.
 SZ> Greetings, Siegfried.
Try copying the file from DOS to a new name say: Copy FILE.DWG FILEBAK.DWG, 
Load AutoCad and see if it works without too much loss.  If that works your 
done.  However if the file will not copy because of the crossed-links then 
you will need to run NDD from Norton or if you have DOS 6.22 you can run 
SCANDISK and it will remove the cross-links but sometimes you lose a lot of 
your file or AutoCad may still refuse to load it.
On all our AutoCad machines or any High end CAD, DTP or ArcView stations we 
always add these two or three lines to the begining of the autoexec.bat file.
c:\dos\scandisk /all /autofix /nosave /nosummary
c:\dos\defrag c: /f /h /sn
c:\dos\defrag d: /f /h /sn
You can add more defrag statements if you have more than the two drives I 
have listed.  This runs everytime you REBOOT or everytime you turn on your 
machine.  Somedays it can take a few minutes so we just grab our coffee while 
we wait for boot up.  This has saved us losing data in the last 2 years.  We 
have not lost a .DWG file and the machines seem to run faster.  Enjoy.
 
--- msgedsq 2.1
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