I use my iPod on two computers and i often transfer large files between the two computers using my iPod. Well a few minutes ago, I brought it down to one of the computers and plugged it in. I waited about 30 seconds longer than usual before the computer detected it, but when it did, in My Computer it showed up as "Removable Disk (F:)" as oposed to what it usually says, "IPOD (F:). When I tried to open drive F: it said "please insert a disk into the drive." After that I decided to disconnect it by going down to the system tray and clicking remove removable device. After that a message popped up that said that the computer isn't yet finished using the disk. I tried it two or 3 more times, making sure that any Explorer windows or any other programs were closed. After a few unsuccesful tries I gave up and just pulled the plug out. The iPod rebooted itself but when it did it gave me that folder with the exclamation mark icon. I rebooted it again with no luck.

Is there anything I can do short of replacing the hard drive?