can't eject usb drive

[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.

 

[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 ejects with
no problem. Any idea what would cause that? The drive had not been
accessed since a backup 12 hours ago.

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

- Franc Zabkar

 

[Harry]

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.

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

Explorer > Harware tab > select drive > Properties > Policies tab

(.) optimize for Quick remove

// 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.

 

[Arno Wagner]

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

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

 

[Ed Light]

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).

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

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