Navyguy said:
Your correct, I had tried to let Chkdsk complete before and let it run
for 6 hours and it never got out of 1 of 3. That's why I mentioned
that this time it did but it never got past 2 of 3 . It shouldn't take
36 hours and it still didn't complete.
Thanks,
Robert
There could be performance reasons for it, but if you're stuck in
a CHKDSK loop, you might never get a chance to investigate.
Possible reasons would be PIO versus DMA mode, an abnormally large
percentage of small files (which slows everything down you try to do).
Those are two that come to mind.
Using the Performance plugin, you might also check for abnormal
performance, such as a too-low command rate to the disk. If the
disk had some bad blocks on it, the disk may wait 15 seconds while
attempting to read a block, which can slow down the apparent performance.
That would show up, if you were running the CHKDSK option that
causes all sectors to be read.
When you right click in the graph pane, and "Add Counter", there is a
section for disk counters in there. One of them is "Disk read bytes/sec",
while another might be "Disk reads/sec" and that is a measure of the
command rate. A modern disk, with actual working cache chip on the
controller, can easily do more than 60 commands per second. The graph
shows you the average per second, when you add one of those disk
counters.
http://www.techrepublic.com/i/tr/cms/contentPics/r00220000811jim33_06.gif
The problem is, most of the tools you'd use for such investigating,
won't run when you need them most. If you can't get the computer
to boot, and are waiting for CHKDSK to finish, you're at the mercy
of the computer. But, you have the option of moving the defective
disk, to another machine, and since the other machine has its own
boot disk, the "guest" disk won't prevent the OS from working. And
then you can do further testing on the disk, to try to figure out
what is wrong. Moving the disk over, will hide some of the problems
(if the hardware on the other computer, is actually the problem), but
still, it's a worthwhile option if you're not getting anywhere fast.
It's one of the best reasons, for owning two computers. The ability
to try stuff.
Paul