olender@sor.CS.ColoState.Edu (Kurt Olender) (04/08/90)
I'm having an intermittant problem that is literally driving me nuts because I can't track it down. Can anyone help? Configuration: IBM OS/2 1.2 SE, November 1990 update. 80386 20 MHz. Micronics I-386CACHE motherboard. Chicony CH-101 I/O adapter 105 MB IDE Conner hard drive. Phoenix 1.10 10A BIOS Microsoft InPort Bus Mouse Orchid Prodesigner+ Video board The problem is this. Occasionally, when copying files from my 5.25" 1.2MB B: drive to my 3.5" 1.44MB A: drive in the middle of the copy, the system crashes with the message: "Drive a: Cannot find sector requested." From that point on, drive a: is effectively unusable until I reboot the system. It continually crashes with this message whenever a: is accessed in any way. The initial crash does not happen everytime I copy from b: to a:. It seems to be more likely to happen when copying large files, but it does happen with small ones on occasion. If I don't turn off the computer to reboot (either Ctrl+Alt+Del or RESET), then the POST finds "invalid configuration data in CMOS" and requests SETUP be run. Unfortunately, I never see just what is has been clobbered because SETUP automatically reconfigures properly. Obviously, something is clobbering something somewhere. Is it possible that the system could be overflowing a copy buffer into the area where configuration data is kept? If so, then why don't I ever see this problem with copies to/from my hard disk? Could it be a timing problem or an interrupt conflict of some sort? The machine manufacturer is unable to duplicate the problem on their test machines.