Note that if you deleted the Recovery HD partition, you can not access these features. I deleted Macintosh HD - Data and now the computer wont boot even in Recovery Mode. Go to Finder > Applications > Utilities > Disk Utility.
Moving data from Mid-2010 iMac to Late 2015 iMac. Utilities: Your OS X Toolbox There are some very good reasons not to partition a drive these days: A partitioned hard drive is more difficult to resurrect. This method can fix any issue associated with the external storage disk. Then under Internal, select the main SSD/HDD/Fusion Drive > Erase > Erase again. Boot Camp failed and reduced Macintosh HD partition from 3TB to 1,46TB. On the top menu select View > Show All Devices. However, the internet aspect is not necessary if you booted with a full Lion USB installer (or Mountain Lion, or Mavericks installers) rather than the built-in Recovery HD partition, or if you used a disk made with the Lion Recovery Assistant tool (again, or 10.8 and 10.9 recovery assistants). You should be able to go back into Disk Utility.
To reinstall OS X from the Recovery partition on a Mac, you will need an active internet connection, that’s because the recovery drive will download the remainder of the OS from Apple. If youre using a USB disk, you may need to.
Here you can use Disk Utility, Time Machine, and restore the OS.įrom the Utilities menu you can access Network Utility, use the Firmware Password Utility, and launch the Terminal, which lets you repair user home permissions, launch other apps, and perform other diagnostic tests. If a disk is missing: Make sure its connected to a power source, turned on, and connected to your computer. You’ll know you’re in recovery mode because the standard desktop won’t be displayed, replaced with a limited Mac OS X Utilities window and a simple Mac OS X menu bar.
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