🚀 go-pugleaf

My last last word on DOS 5.00 CHKDSK problem with big disks (promise)

It seems that the same problem *may* exist in PC-DOS 5.00 from IBM
however I do not have PC-DOS 5.00 so cannot say for sure. However if
it does exist, here is how to tell.

First PC-DOS VER/R is said to give a slightly different output than 
MS-DOS 5.00 VER/R e.g.

   IBM DOS Version 5.00
   Revision 1  CSD URxxxxx 02/92

(note: this version apparently has the "fix")

According the report, PC-DOS uses CHKDSK.COM instead of CHKDSK.EXE
(though still in .EXE format) and further, it is 16 bytes shorter than
the MS-DOS 5.00 CHKDSK.EXE (16,184 bytes vs 16,200).

Accordingly, the fragment in question appears to be at DEBUG offset
DS:2633h instead of DS:263Eh (offset used in my .BAT file was
different since file was "converted" to permit update).

The same check should be valid (8B 4F 0F 8B F9 indicates the "early"
version while 8B 7F 0F 32 ED is an indicator of the "fixed" CHKDSK)
just at the different offset, but as said, I do not have a copy of
either version of PC-DOS 5.00 so your guess is probably better than
mine.

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