I recently encountered a problem with my Toshiba external hard disk. While transferring files from the hard disk to my computer, my laptop shut down unexpectedly because of some hardware issues. When it came back, the particular partition in the external hard disk from which I was copying file was inaccessible! Windows explorer looked something like this - Notice that I had 3 partitions in the external hard disk (G:/, H:/ and I:/). Drive I:/ became invisible. I looked a further and found that computer management was able to detect the partition well, but it couldn't find out the format of the partition, and moreover there wasn't any letter assigned to that partition. Right clicking the partition and trying to assign a letter invariably ends up in error saying The operation failed to complete because the Disk Management console view is not up-to-date. Refresh the view by using the refresh task. If the problem persists close the Disk Management console, then rest...
Universe from my perspective..