Disk Corruption on IBM PS/2 Model 95 with FT Installed
ID: Q99748
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The information in this article applies to:
-
Microsoft LAN Manager, versions 2.1a, 2.2
SYMPTOMS
Several customers have run into serious problems after upgrading to LAN
Manager 2.1a on an IBM PS/2 Model 95 with fault tolerance installed.
Some observed behavior includes:
- OS/2 Trap Ds during boot. On a test lab machine, it started
trapping at l11_Trap0dSimulate+3a 0238:38BB MOV AL, BYTE
PTR[DI+05].
- Booting from HPFS386 recovery disk shows that drive D cannot be
accessed. On the test lab machine, no disk drives were found.
After the system partition was reinstalled from the IBM PS/2 Mod 95
reference diskette, the system started booting again, but CHKDSK could
not restore drive D, and returned these two messages:
SYS0551: Warning CHKDSK cannot find the root directory of the
specified disk but will still attempt to reconstruct the file
system
(The debugger showed that HPFS386 was loaded.)
This was followed by:
SYS0107: An HPFS386 volume on drive D: cannot be mounted because it
has not been initialized for this version of LAN Manager.
(This occurred even if no previous LAN Manager version was installed.)
CAUSE
There are two:
- An incorrect UHPFS.DLL was shipped with LAN Manager 2.1a.
- HPFS386 had to be altered to handle BIDs returning "sector not
found" instead of "drive has been removed."
RESOLUTION
The resulting disk corruption problem has been fixed by rewriting the
UHPFS.DLL shipped with LAN Manager 2.1a and the HPFS386.
The UHPFS.DLL was to be fixed in the LAN Manager 2.2 build.
Additional query words:
2.10a 2.1a 2.20 2.2
Keywords : kbnetwork
Version : :2.1a,2.2
Platform :
Issue type :