Itunes does not recognize external hard drive

I am a dj and I have a couple of external hard drives to back up my music. Here's what happened last night and things haven't been the same since. Last night I have daisychained one exteranl hard drive with my new xternal that has a copy of all my music on it. I changed the folder to my new hard drive the other day and it was working fine. Well, last night I was working on updating some music and I didn't realize that my iBook G4 laptop wasn't plugged in so the screen went dark. I panic a bit and power downed my two hard drives without dismounting them properly. When I realized it was just the power cord I plugged it back in and I thought everything was fine. Now this morning when I try to run off of only my new xternal almost all of my library is showing that it can't be found. Now, when I plugged in an old external and daisychained it with the new one it works fine. What do I need to do so that it recognizes only the new hard drive with everything on it. I tried changing the folder in the advanced tab and it still comes up unrecognized. Please help me I have tons of gigs coming up soon and I use my itunes as a reference tool.
Thanks,

Craig H100 wrote:
Thanks. Realized something though...on the old computer, Windows XP had a problem (R6034) that prevented iTunes from opening or upgrading.
For general advice see Troubleshooting issues with iTunes for Windows updates.
The steps in the second box are a guide to removing everything related to iTunes and then rebuilding it which is often a good starting point unless the symptoms indicate a more specific approach. Review the other boxes and the list of support documents further down page in case one of them applies.
Your library should be unaffected by these steps but there is backup and recovery advice elsewhere in the user tip.
tt2

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