I create a new partition in an external hard drive with disk utility. Now it says mounting disk and it's taking forever. Is that normal? Please help!

I have an external hard drive from seagate. Tonight I decided to give it a try and add a new partition to it so I could have a bootable version of mountain lion in it it just in case of emergency and no internet. After creating the partition, disk utility says "mountain disk", and its been doing it for at least 20 minutes and not moving... Any ideas? btw, now the external drive is not even showing on the left-side bar...
Thanks!

I would try reformatting the drive and creating the partition again. Make certain that you erase the drive and format it as "Mac OS Extended (Journaled)" and the partition the drive.
What you describe is not normal... try again.
Clinton

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