I installed an additional hard drive (200 gig) using a SCSI disk accelerator. I had about 80 gigs of music and some mpg's on it. After I booted up the Scan Disk screen came up and scaned the new drive. Phase one started and it read deleing corrupted sector. It started deleting orphaned files. The scan completed phse one then moved to phse two and said "unexpected error occured". It the follows through with the booting sequence into windows. I checked the hard drive "G" and most of the data and music are gone. I tried to defrag thinking it may receover the info and it reads it cannot defreg because scan disk is scheduled. I restart and it loops in the the same scan disk routine. I have tried to use "Active undelete" but I get an error message "Drive not ready. The drive is not ready for use; its door may be open. Please check drive A: and make sure that a disk is inserted and that drive door is closed. I would love to recover my data but if not I would at least like to use the drive. Any suggestions? Thanks.