said by jwhite4:sounds like you can not move the external drive once it is connected to the comcast dvr....and that you won't lose any existing recordings on the DVR the first time you set it up to the DVR. said by rendrenner:
If you use the WD drive through the eSATA port, and you have to swap DVR's you will lose your recordings. Soon as you plug it into the new box it requests a reformat.
From the Comcast link:
Will I lose the recordings on my Comcast DVR once I connect an external hard drive?
All recordings on your Comcast DVR will still be available after you connect an external hard drive
Not sure which is correct.