can't eject usb drive

  • Thread starter Thread starter Tom Del Rosso
  • Start date Start date
T

Tom Del Rosso

Curious... Sometimes I try to eject my USB drive and I get "can't be
stopped right now". Filemon says nothing is accessing it. The condition
persists, until I run a chkdsk which says "no problem". Then it ejects with
no problem. Any idea what would cause that? The drive had not been
accessed since a backup 12 hours ago.
 
Curious... Sometimes I try to eject my USB drive and I get "can't be
stopped right now". Filemon says nothing is accessing it. The condition
persists, until I run a chkdsk which says "no problem". Then it ejects with
no problem. Any idea what would cause that? The drive had not been
accessed since a backup 12 hours ago.
Click to expand...

Could it be a caching issue ??? Twelve hours would be a very long time
to retain data in cache, though ...

- Franc Zabkar
 
Curious...  Sometimes I try to eject my USB drive and I get "can't be
stopped right now".  Filemon says nothing is accessing it.  The condition
persists, until I run a chkdsk which says "no problem".  Then it ejectswith
no problem.  Any idea what would cause that?  The drive had not been
accessed since a backup 12 hours ago.
Click to expand...

Make sure your removable drive have "write caching" turned off (as
defeault).

Explorer > Harware tab > select drive > Properties > Policies tab
(.) optimize for Quick remove
Click to expand...

// This setting disable write caching on the disk and in Windows, so
// you can disconnect this device without using the Safe Removal
// icon.

Then,m next time Windows complained "can't be stopped now,"
just ignore that, because you have make sure that the "write caching"
has been diabled.
 
Could it be a caching issue ??? Twelve hours would be a very long time
to retain data in cache, though ...
Click to expand...

Not with a bug-free buffer-cache. The way this works is that after
a certain time (typically 300 seconds) stuff that has not been
flushed to disk is forced onto disk by an emergency flush that
runns with very hogh priority. However, if the implementation is
defect it is quite possible for data to stay unflushed forever
or for data that has been flushed to remain marhed as unflushed.

My guess would also be a bug of this kind.

Arno
 
Ant said:
I ran into this again at work with an old external Maxtor OneTouch HDD.
Optimize for quick removal was already selected in Policies tab via
Device Manager. Unlocker showed nothing used on this drive. All I did
was copy big image files (5 GB).
Click to expand...

Sometimes closing whatever you're using for Windows Explorer will
release it.
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