Op 21-03-11 01:09, Joel Rees schreef: > On Fri, Mar 18, 2011 at 11:01 AM, Geoffrey Smith <gps@asu.edu> wrote: >> Hello, I am using Debian 6.0 Squeeze and the Gnome desktop on a typical >> desktop computer. Suppose I have a USB drive mounted on /media/ and I do a >> normal shutdown via Gnome. Is the USB drive automatically unmounted as part >> of the normal shutdown process? The reason I ask is because I forgot to run >> umount before shutting down. Thank you. Geoff > > For a little more explanation, if you shut down some > awkward/unexpected/exceptional way, such as a power blackout or a > cleaning staff mis-operation of the power outlets (well known > example!) or (ahem) when your 6-year-old son figures out that the > power switch on the back does something, there is a possibility that > dirty caches may not have been written to the disks before the DC > power from the PS module drops. > Also something to keep in mind: if you only READ from a drive, there's no need to unmount before unplugging. However, to only read you must have mounted the filesystem with an option like noatime (or mount a fat filesystem, that doesn't support access times), else stuff will be written. Sjoerd
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