Hot answers tagged partition
The Mac hardware stores the boot volume in NVRAM so you could power off the computer and then reset things by holding the Command Option P R keys down. Once you've heard two boot chimes you can release things and if the Mac OS X volume is viable it will boot first. If that doesn't work then it's likely that the OS X volume has issues and the system is ...
I would use the terminal to sort things out if you don't see what's happened in Disk Utility. diskutil list From there, you can see all the names and numbers OS X has given to the volumes/partitions. Eject them all (except for the booted OS). diskutil eject disk2s2 etc... At that point, you might need to clean up the bad mount points. ls -l /Volumes ...
Disk Utility can't do it, but iPartition can - http://www.coriolis-systems.com/iPartition.php Tested on both GUID & MBR formatted drives.
This requires the three partitions between the selected one and the intended one to be moved. Disk Utility can't do this without destructively destroying and recreating the partitions in the intended location, removing all data from the partitions. You will need third-party software such as iPartition. For more information, see Partitioning Software.
If your end goal is to repartition, given that you can't in OSX, I'd try a linux livecd using gparted. Something like this: gparted tutorial You can boot your mac with a linux live USB key and use gparted to repartition, then boot back into OSX.
There is no uninstall per-se for any OS X installation. You can just boot into your other OS to test that it boots before deleting your current OS partition. I can't speak to any changes that Yosemite has made to your Mac or the recovery partition, but I'd start with powering it off and then booting while holding the option key. From that boot manager, you ...
I know this is an old article, but this recently happened to me and the easiest way to get rid of the Yosemite partition is to: Boot your other OS, mine was Mavericks Open Disk Utility Select the Yosemite partition Select the erase tab, erase it, Select the main drive and go to the partition tab, where you can then delete the Yosemite partition and resize ...
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