I can\'t find my external hard drive after using it in my laptop

[iqueen45]

I have a Hitachi 2T external drive. I previously used it with my desktop. Couple nights ago I installed it into my laptop but did not format it (the computer said i would lose info i format). I simply installed pictures from my camera disk. At this time when I plugged it into my desktop it does not show up under the list of storage options in my computer or file save. I tried to search it but no success. help me please.

 

[nhasian]

first make sure it is detected by the bios. if it is, run the disk management tool in windows to get more info on the drive and partitions.