I will run chkdsk when I get home. I previously ran chkdsk /r and chkdsk /p and it reported uncorrectable errors. Would it help at all if I opened up the box and connected the hard drive directly to the motherboard, temporarily disconnecting my dvd and dvdrw drives? My reluctance to blame the controller card stems from the fact that when the card bios screen flashes up at the beginning it detects a 186 gb drive. Also, Norton Ghost previously ran with this controller card though I did not have the sata drive attached to the motherboard at that time. History- I previously had the 186gb ide drive partitioned and was saving backups via Ghost on one partition. The hard drive was on the controller card and the dvd and dvdrw were on the motherboard along with a cdrw drive. I then purchased the sata drive, removed the partitions on the 186gb drive and removed the cdrw drive. So presently sata drive is on motherboard, along with dvd and dvdrw. 186 gb ide continues to be on controller card. I don't know if this information helps much but as an eyedoctor it never hurts to get a good medical history. Thanks again for your willingness to help. Edit: RESULTS OF CHKDSK I am going to include 3 gifs with this post. First is screenshot of chkdsk Second is Norton Partition Magic summary screen Third is error message given when trying to resize using Norton Partition Magic. Hope that helps! Thanks again!