I had to restart my computer after iTunes froze and would not force quit. When I restarted, only the Time Machine volume from my WD external USB drive mounted. I opened Disk Utility and tried to mount the other volume, which holds my iTunes library and it said to try and repair the disk. I clicked 'verify disk' and it started verifying the Time Machine volume. I stopped the process because I thought there might be a way to only verify the volume that wasn't mounting. At this point, the Time Machine volume would not remount. I tried restarting again, and still, neither volume will mount. The disk is spinning up fine. In Activity Monitor I can see that the fsck_hfs process is running at a pretty high cpu usage. Any ideas? EDIT: I unplugged the disk again and the Time Machine volume mounted when I plugged it in. Still no luck with the other volume. I ran First Aid and it said 'Invalid content in Journal'. It said the volume was repaired successfully, but it still won't mount.