Undo partition of HD

[wolfrunner]

Hello, I seem to have partitioned my One Hardrive into two. Now i have the original drive that boots up the the OSX and another one "Mac HD2".

My question is how do i undo this accidental partition. And how to preserve the files i have stored on this new "HD 2".

 

[Kaveman]

Drag the files off "HD 2"
Use Disk Utility, click on the Partition and click Minus.
No promises

The only guaranteed way is to reformat the drive, and you'll need to copy EVERYTHING off before you do that!!!

 

[tompatrick]

Hello, I seem to have partitioned my One Hardrive into two. Now i have the original drive that boots up the the OSX and another one "Mac HD2".

My question is how do i undo this accidental partition. And how to preserve the files i have stored on this new "HD 2".

Delete HD2 from disk utility and drag the OS X partition to take all its space. By the way, why not let the other partition live. You should have more than 1-2 partitions for your hard drive. Read benefits here http://techlogon.com/2011/07/24/benefits-of-partitioning-a-hard-drive/