How to safty unplug a USB Stick

Thomas Linton th.linton at
Tue Dec 20 05:23:48 PST 2005

I don't have FS problems. After a umount the USB stick has still the
Power LED on. Under Linux an "eject" turns the Power LED off.

I tried /usr/ports/sysutils/eject without success (freeBSD 5.4)

I went a little bit through the source of an linux "eject" and the
*BSD "eject". The Linux Verion is using "cdrom.h" and *BSD "cdio.h". 
I think that both "eject's" are actually doing the same (*BSD:
ioctl(fd,CDIOEJECT); Linux ioctl (fd,CDROMEJECT)). I'm not a
kernel/driver programmer, but I think the umass Driver or SCSI Driver
(because "eject /dev/cd0" also doesn't work ) doesn't accept a

On 12/20/05, Dinesh Nair <dinesh at> wrote:
> On 12/20/05 07:44 Thomas Linton said the following:
> > Besides umount, to keep the FS consistant, I belive it would be necessary
> to
> > actually turn off the USB stick before you remove it. With Windows and
> Linux
> > there is also a way to safety remove -power off-  a USB stick.
> i've just unmounted and then pulled out various usb sticks, CF cards and
> sony memory sticks and have not seen any filesystem problems when i stick
> them back in again. never had to use camcontrol eject.
> --
> Regards,                           /\_/\   "All dogs go to heaven."
> dinesh at                (0 0)
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