The daily reboot on a 722 with an EHD attached waits say 15 minutes before it starts but the receiver does not take commands--this is new in the last few weeks. You cannot power up or down the 722 until it "finishes" some inspection of the EHD. The EHD shows accesses for the whole time. Finally it will go on and reboot. It seems to work the EHD hard.
(CAUTION) If you pull the USB cable the disk may be left unrecognizable until you pull the EHD's power and reapply that. It may be safer to pull the power but I don't know that. It is best to unplug the EHD before the reboot. The quickest way out of a hang in progress before reboot is to unpower/unplug the EHD but be prepared to power cycle the EHD.
-Ken
(CAUTION) If you pull the USB cable the disk may be left unrecognizable until you pull the EHD's power and reapply that. It may be safer to pull the power but I don't know that. It is best to unplug the EHD before the reboot. The quickest way out of a hang in progress before reboot is to unpower/unplug the EHD but be prepared to power cycle the EHD.
-Ken