[comp.os.cpm] INFO-CPM Digest V89 #164 - CP/M conversion

johnlee@pnet01.cts.com (John Wiley) (08/15/89)

Steve Wooldridge noted that upon examining his disks using a utility, he found
fragmented files.  It may not be relevant in this case, but I encountered a
similar problem in converting a "dinosaur" disk to MS-DOS.  It was due to an
interleave of 5:1 on the SSDD floppy of the older machine.  This means that
files written by the old machine were "chopped up" when read on the PC.  To
discover what the interleave factor was, I created a large file on the old
machine, with line numbers.  By studying the sequence of the file as read by
the PC, I was able to discern the 5:1 ratio.

Another possibility might be that the older machine is fragmenting the files
for optimum disk usage.  If so, a solution might be to copy the disk onto a
new disk on the old machine before reading it on the PC.  This would likely
produce unfragmented files (but wouldn't solve any interleave problem).

I hope this will help.

  **John Wiley     San Diego, California

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