I recently created a disk with a single xfs partition in ubuntu 9.04. I tried plugging it back in as a USB disk using an enclosure, and it shows up as /dev/sde. Unfortunately there is no /dev/sde1. cfdisk and other tools show that the partition is there, but the actual device file is not there, which means I cannot mount it.
What could cause this behavior, and how can I fix it? I tried running cfdisk, and re-writing the partition table, which just caused cfdisk to indefinitely hang.