Resize partition?

[stuckinasquare3]

Hi all. I have several partitions on my Mac. I'd like to shrink one so that I can grow another. DiskUtility doesn't support this. Has anyone had luck using any utilities that can handle this?

Thanks

 

[TheStu]

Um... are the partitions full? Because Disk Utility totally supports it.

Are all the partitions HFS+, or is one of them Windows or something?

 

[stuckinasquare3]

Disk Utility only lets you grow/shrink "down" I believe. For example, if my partitions look like this:

[A][C]

I can make [C] larger or smaller, and I can make [A] and smaller, but I can't make [A] or larger.

 

[TheStu]

Disk Utility only lets you grow/shrink "down" I believe. For example, if my partitions look like this:

[A][C]

I can make [C] larger or smaller, and I can make [A] and smaller, but I can't make [A] or larger.

Ok, this is extra kludgy, but maybe try this:

1: On partition C, erase free space, then try to create partition D (if you can split C in half or more at least)
2: Transfer C's contents to D.
3: Delete C
4: Backfill the free space.

Or, you can try Parted.

 

[stuckinasquare3]

I'll give gparted / gnu parted a try.

Thanks!

 

[manly]

I'll give gparted / gnu parted a try.

Thanks!

you'll probably want to download an ISO of Parted Magic on sourceforge

 

[stuckinasquare3]

I put parted-magic (which has gparted) onto a USB stick and successfully booted into it and resized my partitions. However, I think I screwed things up. Firstly, I deleted my recovery partitions because, who needs them, right? I don't think I was supposed to have done that. Once I booted back into my OS and tried verifying my disk partitions, I'm getting complaints about one of them not having enough trailing boot loader space. What is that? How do I give it more "trailing boot loader space"?

 

[stuckinasquare3]

Figured it out! Turns out DiskUtility couldn't resize the partitions during the repair process because they were active. Booting to a recovery USB stick did the trick.