What kind of reason is there when an external USB data drive cannot be
disconnected? And I don't mean just one click and give up. I mean
repeatedly and repeatedly and repeatedly.
JimL
Disk Cache may be turned on for the drive. Right click My computer, left
click Manage and then Device Manager. Click the + beside Disk Drives and
then right click your USB drive and left click Properties, click the
Policies Tab. If Optimize for quick removal is not checked this could be
your issue.
Some times it just doesn't want to release the drive. Make sure no
program is accessing the drive, including indexing services, the antivirus
program or the like and then try again.
If there has been no activity for an extended period of idle computer time
it is probably safe to just unplug it.
Personally when I have one hang like this I just restart the system and
unplug when the system bios is displayed if I have any doubt.