[Novalug] [Dclug] Spin down and/or Park external USB drives in Linux?
edjames at greenbelt.com
Tue Apr 28 10:38:07 EDT 2009
Here's my take on his question - if I'm wrong, then it's *my*
unmount "removes" the file system from the OS. But there's also
the issue of physically moving the hardware around. In the old days,
one would "park" the read/write heads so they don't bounce and
scratch the media. I'm guessing that he/I/us want to know how to
be sure that the disks are spun down and the heads parked. Of
course, by now, it's likely that heads auto-park anyway. I'd also
like to be sure that when I unplug my HD drive from the USB port to
move it, that it's as hardware-safe as possible.
Quoting "Megan Larko" <larkoc at iges.org>:
> Maxwell Spangler wrote:
> Hi Max,
>> When I Unmount/Eject (Whatever) external USB drives on MacOS, I hear the
>> drive park, spin down and go quiet before I physically remove it.
>> Are there ways of easily doing this on Linux?
> I'm not certain I correctly understand the question. Just to safely
> remove a USB device from a
> linux system? One could use the command line in a terminal window
> (df to see the mount point if
> uncertain and issue the command umount /dev/sdX, preface with sudo
> if necessary), On most linux
> boxes running in init level 5 the USB device appears as a icon on
> the wallpaper. Right click on the
> USB icon and you are presented with options for "Unmount" and for
> "Eject", as appropriate. Some
> of the USB browsing apps such as GNOME "File Browser" will show the
> USB device in a left-hand side
> window pane. Frequently it will have an "Apple OS X"-looking eject
> icon next to it to cleanly
> unmount the device. The "File Browser" also has an unmount option
> by right-clicking the USB icon
> in the left-hand side pane. The KDE "Dolphin" browser behaves similarly.
> Pls clarify if I did not understand the question.
>> I have five external drives at this point: Two in Antec MX-1 cases that
>> seem to spin down/up in reaction to USB status of some sort (observed
>> when I shut my system down or unplug the USB cable), two generic boxes
>> and a new Seagate 2.5" drive.
>> I'd like to treat them with as much respect as possible and that means
>> if I'm going to disconnect the Seagate (which powers via USB cable) I'd
>> love to shut it down into a "safe mode" as much as possible.
>> I yanked a generic 2.5" drive recently during some sort of activity and
>> afterwards the drive is kaput. So I'm trying to avoid that with this
>> new one.
> I will now bring you up to speed on the situation.
> We know nothing!
> There, you are now up to speed.
> ---Steve Martin as Inspector Clouseau
> Pink Panther 2
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