I recently ran through Norton Disk Doctor and Speed Disk on all of my partitions. I have 6 partitions on my 200Gb drive. Now I noticed that 3 of the partitions are gone off of my desktop. It looks like they've been unmounted. The problem is I've restarted the computer and tried mounting them with Disk Utility but nothing happens. Everything seems to check out though, ie. they're still there and all the data is still on them, I just can't seem to get them mounted again. Anyone have any suggestions?