Hello all; I have a 13" macbook running 10.4.9. When I bought the machine last year, I also purchased a seagate 250 gb external hardrive, which I used with no problems for about six months. Then one day when I plugged it in it said"The disk inserted is not readable by this computer". I have probably about 30 gigs of photos and music in there, and some of it isn't anywhere else, so I don't want to just reformat the drive. Any ideas?