Depending on the issue with your startup disk, you need to repair it or reformat it. Then, select Disk Utility and click Continue. For more on Mountain Lion, be sure to read the official Cult of Mac review. When your Mac boots up in Recovery Mode, you will see the macOS Utilities or OS X Utilities window on your screen, depending on the OS of your Mac. If you’d rather install Mountain Lion without a bootable copy and keep your setup the way it is, refer to our general tutorial.
Repairing Disks using OS X's Disk Utility can be a useful way to improve performance, and in some scenarios, recover lost data. Choose your Mac’s hard drive and begin installing Mountain Lion.īy following those steps, your Mac will be restored to Apple’s stock setup and all of your personal files will be gone. Verify and repair startup disk on OS X As much a we all try to protect our computers, sometimes issues do arise with the drives where you store your data. Once your Mac’s hard drive is erased, quit Disk Utility and go back into the Mountain Lion installer.
#Where is mac os x startup disk full
Understanding what startup disk is full actually means is the first important step before you. (Make sure you have a backup first, just in case.) Every Mac user will experience the message Your startup disk is almost full at one time or another. Apple’s Hardware Test utility is usually run by. From the erase tab, choose “Mac OS Extended (Journaled)” and wipe your drive. You can hold down the C key on your keyboard to instantly boot to a Mac OS X or other bootable disc in your Mac. Inside the Mountain Lion installation tool, you can open Disk Utility and erase your Mac’s hard drive.By default, the Startup Disk is the disk named Macintosh HD and the user’s applications, files, and any data are also stored on this disk. Select the volume containing the bootable installer. A startup disk on Mac is a hard drive’s partition where macOS is installed. Release the Option key when you see a dark screen showing your bootable volumes. Restart your Mac while holding down the option key. Press and hold the Option (Alt) key immediately after turning on or restarting the Mac.
#Where is mac os x startup disk install
For a clean install of Mountain Lion on any compatible Mac, follow these steps: Now that you have a bootable copy of Mountain Lion, this drive/disk acts as a full-fledged setup tool for upgrading other Macs to the new OS.