Dismount a USB Volume from Command-line

Question

How do I unmount a volume (USB flash drive) via command-line or Visual Basic script?

AFAIK, neither DOS nor COMMAND.COM support USB flash drives. Did you mean `cmd.exe`? — u1686_grawity, Mar 30 '11 at 18:41
Check this out: http://stackoverflow.com/questions/296560/mount-unmount-usb-drives-with-vbscript and also check this out: http://portableapps.com/node/639 — MaQleod, Mar 30 '11 at 18:42

score 5 · Answer 1 · answered Mar 30 '11 at 19:03

5

Check out the two following Windows utilities:

Mountvol - "Creates, deletes, or lists a volume mount point."
Devcon - "Using DevCon, you can enable, disable, restart, update, remove, and query individual devices or groups of devices."

answered Mar 30 '11 at 19:03

Ƭᴇcʜιᴇ007

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Despite the name, `mountvol` doesn't do the same thing as the other tools (which is to sync and unmount the filesystem); rather it only manages paths through which a mounted filesystem can be accessed. – u1686_grawity Mar 31 '11 at 13:06

score 2 · Answer 2 · answered Mar 30 '11 at 19:04

2

You can use DevEject.

answered Mar 30 '11 at 19:04

paradroid

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score 1 · Answer 3 · answered Mar 30 '11 at 18:45

1

From a batch script, the easiest way is to call USB Disk Ejector. (Sync might work too, but it wants a drive letter, which is not always predictable.)

answered Mar 30 '11 at 18:45

u1686_grawity

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Dismount a USB Volume from Command-line

3 Answers3

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