How to restore and erase a "mac osx extended" with disk utility?

hello, I exedently sepret my disks the first one name is: Macintosh HD
and the secound one name is backup (I chose the name).
I want to merge them together how should I do it?
(macbook air 11" osx mavericks)
I teyed first restore the scound one and it didn't worked here is a screen shut of it:

Let me make sure i undestand:
1. you partitioned your internal hard drive into two partitions
2. you now want to combine them together
Correct?
If so, i believe you need to get an external hard drivea dn copy everythiong there - including a COOTABLE clone of your startup drive.
Then boot from external, and use disk utility to partiton your drive as (1) partition, and format it (HFS+ Journaled). Then clone back your main info and anything that was on "backup".
Grant

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How to restore and erase a "mac osx extended" with disk utility?

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