That's exactly what happened to me and boy did CEO get a nasty email after I was forced to wipe out 50+ hrs of archive.LOOL..
BILL , when he connected his EHD to his new 722K box says it needs to reformat
Not the DVR hard drive or existing boxes EHD connections!!
Thanks Codyc the guide worked perfectly. Just had to spend a little time learning linux, I used Ubuntu to do the trick and did not lose anything. again, many thanks.Download this guide (with corrected link):
Others have found it to work in recovering data on EHD.