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First, here's what happened: I had OS X Mavericks (10.9) installed on my MacBook Pro. Then I wiped the operating system to get Windows 7 instead. After that, I went to install Ubuntu 12.04, but while installing, it wiped Windows 7 as well. Now I'm looking to reinstall Mac OS X, but I can't edit the partitions to create unallocated space, because it is stored in the ext4 partiton, mounted at "/". Any help would be appreciated.

edit: when I try to boot from any device (disk/USB/SD) this message shows up twice [error: efidisk read error.]

Adam Adame
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  • You need to ask this on [The apple Q&A](http://apple.stackexchange.com/) not Ubuntu, as your current problem is with OSX. – Tim Jul 08 '14 at 21:08
  • Actually, the problem *IS* with Ubuntu, because the need is to resize the *Ubuntu* partition. That said, the question is essentially a duplicate of [this one](http://askubuntu.com/questions/24027/how-can-i-resize-an-ext-root-partition-at-runtime) (and probably many others). – Rod Smith Jul 08 '14 at 21:55

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To create unallocated space, take your installation drive for Ubuntu, and click Try Ubuntu without installing from the GRUB Startup menu. Once logged in, look for GParted in the Ubuntu search menu. Once opened, select your Ubuntu partition, right-click it, then click "Resize" from the menu. Resize to the desired size, then install Maverick in the unallocated space.

Cheers

Find Me In The Woods
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  • Thanks, but whenever I load from the installation drive, I only have these options: Ubuntu, with Linux 3.11.0-24-generic; Ubuntu, with Linux 3.11.0-24-generic (recovery mode); Previous Linux Versions (Ubuntu, with Linux 3.11.0-15-generic; Ubuntu, with Linux 3.11.0-15-generic (recovery mode)); Memory test (memtest86+); Memory test (memtest86+, serial console 115200) – Adam Adame Jul 08 '14 at 23:13
  • Do that first one. – Find Me In The Woods Jul 09 '14 at 02:28