On Nov 11, 2011, at 8:07 AM, John Musbach wrote: > On Mon, Nov 7, 2011 at 6:30 AM, Rudolf O.Durrer <[email protected]> wrote: >> I recently bought a external HD (Freecom mobile drive classic II, 500 GB, >> connected with USB 2). >> Nice device, so far, but: each time any of my macs (mini, MBP 2010, MBP >> 2011, all with Snowleopard) goes to sleep mode, this HD seem to be cut off. >> When reactivating the computer, the HD is gone and a message appears telling >> to throw out the HD correctly by moving the icon to the trash.... >> Is that a failure in the HD's construction or what else? >> Does anybody observe similar behaviour with external Freecom HD's > > I've observed this with all external drives and Mac OS X when > sleeping. Sleeping quite literally means that the system suspends > operation of all (including the USB and FireWire bus) but the most > necessary hardware such that when the suspend process begins Mac OS X > sees the drive as being improperly removed because the bus is turned > off and thus when you come out of sleep you see that dreadful warning > message. Either eject your drive before sleeping or don't sleep your > mac and just turn off your monitor instead.
This is not true, that bus suspension = improper unmount. Bus suspension means suspension, not derailment; it will resume from the point it was suspended. Try this: Copy a large file from your internal drive to an external one (or vice versa), and in the middle of the copy, put the machine to sleep. Wait 10 minutes (or go to lunch), then wake the computer. The copy will proceed to completion. If you're seeing different results, then you have a device connected that is hanging your bus. _______________________________________________ MacOSX-talk mailing list [email protected] http://www.omnigroup.com/mailman/listinfo/macosx-talk
