I Followed the DS2 HD replacement instructions found on this great forum and installed the Western Digital 320gb (all I could find). The DVTR seemed to work properly and was recording and replaying images for the first day. Came back on Monday and had the 6019 error message. I've reformatted with the fat32formatter and reinstalled software with the same result. The original hard drive was lost after a power outage, no help from the battery back up/ surge protector. I'm not sure if it is a hard drive miss match, toasted board, or toasted cable. The hard drive shows no problems when it is mounted in a PC. Thanks