This is one of those situations with too many changes at one time. I went into the advanced mode for the DVR1100c and tried to record GLC on a timer using the Maxtor OneTouch 4Plus hard drive. My first error was that I apparently have to use the "all channel" channel number rather than my "fav 1" channel number (323 vice 110). Next the DVR1100c showed a file type not recognized. I switched to a flash drive with photos and it displayed photo files OK (I didn't realize it would display photos, nice!). Back to the OneTouch but files still not recognized. I moved the Onetouch to the PC and it was OK there. Back to the DVR1100c and it was recognized this time. I suspect the OneTouch was somehow upset during the multiple master resets I did while going to the advanced mode. Has anyone else experienced any OneTouch recognition problems?