I have the above USB 2.0 external HDD* with important data that I'd like to access on my Win7 machine. It isn't assigned a drive letter in Computer Management > Storage > Disk Management, and the only available options on the context menu are 'Delete Volume...' and 'Help'. I also can't seem to see it under Diskpart via admin command prompt.
* Inputting 'Seagate 100662969' (the model number on the HDD cradle) into Google brings up this model on the Seagate site.
Bad news. DON'T try anything. Ask Jumanji for help. He is the disk guru. http://www.sevenforums.com/member.php?u=163641
Disk 3 shows as a 1397.26 G that has 3 partitions. The second partition (1396 G) that is supposed to have data is RAW (isn't formatted). Something happened. Did you converted it from MBR to GPT?