Hi
i have a Seagate ST30000CB 1 TB External hard drive which i've had for about 2 years.
Its been running fine ever since until today. i turned on my computer to access it and it came up as Local Disk (H

(I named it Sea Disk so i knew something was wrong.)
I went to open it and it said:
The disk in Drive H is not formatted
Do you want to format it now?
Yesterday I put in a second internal hard drive temporarily to access the data on it and then removed it, turned my computer back on and i was able to access my external at that point. Any idea what i should do? I have about 300GB of stuff i would like not to lose. Thank You