Can Not Get To G:

[Hobo]

I have 2 drives which were originally mirrored i have been storing stuff on it for ages, last week i had to turn the SC101T off when i turned it on again i had a G: and an H: after a while the G: dissapeared but the H: was still there and accessable but the info on it was 2 years old, i have removed the drives and tried bring them up one at a time but only once has G: appeared it did have all the folders but when i tried to access the power light started to flash and G: had dissapeared from my machine.