Merge or Combine Two Partitions in Mac OSX

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it's easy:

1. boot from DVD (10.5 system disk / Leopard)

2. open Disk Utility

3. Select the hard drive from left hand column (NOT partition but drive, eg something like WDBEVE and not s03 etc).

4. Click on Partition tab in main window

5. Select "Current"

6. Select partition you wish to delete

7. Click on minus (-) sign on bottom left

8. Confirm Delete

9. Drag original partition to include full disk

10. Confirm resize

That's it! Reboot and you're done.

Does this process work for Snow Leopard 10.6.8?

I have Mac HD which I want to merge with a partition that has a copy of the Mac OS X Install Data folder on it.

I don't care about the data on the partition. I want to add that space to Mac HD without destroying data on Mac HD.

Thanks.

Great ! Thanks a lot.
Fast and clean.
Couldn't do it better.

Hello, thanks for the information. Can i do this merging and resizing on Mac OS X 10.4.11? I have 3 partitions and i want to merge the two that is not the OS and resize the rest.

Instead of using disk utility to merge two partitions I prefer my third party tool which is easy to use and faster than disk utility. Also there is no risk of data loss.

Thank you. Clean and easy instructions.

I just did this and everything seemed to work fine. It all looks fine from Disk Utility/Drive/Parition.

But if I click on Disk Utility/Partition or Finder it reports the old size and old available space.

I've tried running repair on the drive and on the partition and neither helped.

If there is data on one partition and no data on the other, when í merge them will the data be erased

no, the data will still be there!

I can confirm that using this technique that data is not destroyed when merging partitions. I did that very thing today for a client who has a Tiger hard drive that originally contained two partitions. I booted from an external hard drive that contains OS X 10.5 and used Disk Utility to erase data from the extraneous Tiger partition. Afterward, I combined the two partitions into one. All the data on the main partition remained intact.

This is like over a year later, but thanks! Worked perfect! (P.S. I did the 10 step version mentioned in the article, and I didn't boot from the disk, I just opened the installed version of Disk Utility in the Utilities folder).

I just discovered a simpler way:

1. Format the partition you want to delete on ur mac to FAT 32 using disk utility
2. Open boot camp assistant and voila, choose to delete the partition

As simple as ABC...n now u have a unpartitioned HFS drive :)

Mickey

I just did this too. Fantastic, absolutely no problems, on 10.6

thanks you! saved me half the day of research!

I only have the FAT format erase in MS-DOS, other mac formats available are Mac OS Extended (Journaled), Mac OS Extended, Mac OS (Case-sensitive, Journaled) and Mac OS Extended (Case-sensitive) what can I do?

Just tried it and it works perfectly! So simple and a 1-minute process!! Thanks!!!

Just GREAT! I tried this, but didnt realize the FAT part

WOW THANKS THAT WAS SO SIMPLE

Oh so great a tweak ! You're a genius, it's so much easier that way !
But indeed, it does require your secondary partition to be first converted to FAT32, so that BootCamp assumes that it's a Windows partition.
thanxx again !

WHAT A CHAMPION! God I Love the internet! and it's people like you who make it a better place! thank you. :~)

Awesome fix!

GENIUS!! THANKS HEAPS!

Nice Job. thanks.

Fantastic, u're a genius, this has been sooooo sweetly easy!!! Incredible, thanks again and merry Xmass :)

Thank you soooooooo much...!!!!!!

Wowww.....just in 15 mins...research time is included :)