one SCSI HD not accessible

[Vince]

I have two SCSI HD on an Adaptec 19160 card, boot from ID 0, it is OK. For
some unknown reason, the second HD (ID 1) is not accessible form XP windows
explorer anymore. SCSI bios detects both drives, XP's disk manager detects
both as "healthy", but the 2nd HD was shown as RAW file system with 0
capacity. Both HDs are actually formatted as NTFS system. I am sure the 2nd
HD is OK since I have a Win2K running on the same PC (managed by a
multi-boot manager, it is not XP dependent), the HD is normally accessible
and all files are there.
I tried to look under device manager, both drives are list there and
"working properly", no yellow markers. The HD is under SCSI bios control, no
driver conflict at all. The problem seems to be the lost file system. I
guess, reformat might help, but need backup and restore huge amount of
files, and most important, what is reason? Any way to solve it
undestructively?

Thanks for help.

Vince

 

[Pavel]

Because the driver for the Adaptec 19160 in XP is different it looks at the
hardware somewhat differently and any problem that may have been overlooked
in Win2000 may not be in WindowsXP. Check termination, try to decrease Sync
rate in the Adaptec controllers bios, change the termination to different
setting (I am not sure if the Adaptec 19160 has this, such as high/low
low/low or high/high termination). Also you may want to change the ID from 1
to some higher number.