🚀 go-pugleaf

Dear Imagers and Mac Experts:
 
Due to some unknown computer problems I encounter TIFF files with damaged 
data forks.  The images were originally OK, it just happens after some 
weeks or months of storage.  Using Image, Photoshop, GraphicConverter 
etc, such images cannot be opened at all or they have a shift in geometry 
and colors ofter a certain break point.  Is there software around to 
repair at least minor damages?
 
My second question is regarding the source of this problem that also 
affects Stuffit archives and MS Word files.  I have a Mac Quadra 800 with 
24 MB RAM running system D1-7.1, a Seagate ST3600N version 8514 built-in 
harddisk with 500 MB, a built-in Sony CD-ROM, an Iomega Bernoulli drive 
with 150 MB removable cartridges, and a Ricoh FS2 color scanner.  I made 
sure with SCSIProbe 3.0 that all of them have different IDs.  Installed 
are also two Videologic DVA-4000 cards.
 
All of the disks have been checked for viruses using recent software from 
several companies.  When the built-in harddisk was used for start-up, I 
had a number of disk crashes.  Damaged catalogue and desktop files were 
part of the problem.  Completely rebuilding the harddisk from scratch and 
loading of new system software cured the problem for some time (days or 
even weeks).  After repair, MacTools reports that the harddisk is in good 
condition with no bad sectors.
 
Now I use the removable Bernoulli cartridge for start-up.  This has 
minimized the problems on the harddisk, although not completely 
eliminated.  MacTools never ever detected any problems with the start-up 
Bernoulli cartridges.
 
Also want to mention that there are some problems with reading and 
writing floppy disks (damaged desktop files, bad catalogue structure 
etc.) using the internal drive.
 
Naturally, nothing happens when the service person is here.  He worked 
for ten years with Apple in Cupertino and is very knowledgeable.  He told 
me he has a similar problem with one of his Mac PowerPCs.  However, Apple 
refused to comment on this. The problem probably originates from some 
rare events not easy to demonstrate.
 
Does somebody know about these problems?  Any suggestions to fix it?
 
Thank you for your help.
 
Dietmar Tietz
 
******************************************************************
*           Dietmar Tietz, Ph.D.,  Research Scientist            *
*            Biostatistics, Justus-Liebig-University             *
*            Ludwigstr. 27, D-35390 Giessen, Germany             *
*                  Phone: +49-(641)-702-9733                     *
*                   Fax: +49-(641)-702-9724                      *
*              Email: Dietmar.Tietz@Uni-Giessen.de               *
******************************************************************