- #MAC OS MOUNTAIN LION WONT START FROM COMMAND R INSTALL#
- #MAC OS MOUNTAIN LION WONT START FROM COMMAND R MAC#
Copy your data to your startup disk by selecting the option to migrate data from a Time Machine backup or another disk, in this case your external drive.
#MAC OS MOUNTAIN LION WONT START FROM COMMAND R MAC#
After erasing the disk and installing macOS, your Mac will restart automatically, and the setup assistant will appear. Step 4: Erase your startup disk using macOS Recovery and reinstall macOS (don’t select your external drive). Step 3: After migration, follow the setup assistant instructions to the end, and when you see your desktop, confirm that all your data is present on the external drive. When you see the Setup Assistant, choose the option you want to use to move data from another disk, and select the startup disk on your Mac as the source from which to migrate data. Step 2: Once macOS is installed, your Mac will restart automatically from the external drive. Select the external disk that you want to erase, not your startup disk.
#MAC OS MOUNTAIN LION WONT START FROM COMMAND R INSTALL#
Erase the external drive using macOS Recovery and then install macOS to it. Step 1: Connect an external drive that’s similar in size or larger than your startup disk. You can take the steps below to take a backup of your data to an external drive if you don’t have a recent data backup for your startup disk: Before doing that, take a backup of any important data from the disk before erasing everything stored on it. If Disk Utility can’t repair your startup disk, you may have to reformat it. If it’s not recognized under Disk Utility, it’s probably dead. Step 6: Finally, use the Startup Disk to select your hard drive to restart your Mac from the hard drive. If this fixes any issues, run it all over again until you see the green OK, and then run Repair Permissions. To enable this button, click on your hard drive’s macOS partition. Step 4: If you see your hard disk on the list, click your macOS partition for the hard drive, and then select First Aid tab. Ignore this window and click Utilities and then click Disk Utility. Step 3: When your Mac starts up, choose the language you’ll use, press Return on your keyboard, and an Installation window will open. Note: Boot from the recovery partition if you’re on 10.7 Lion, 10.8 Mountain Lion or 10.9 Mavericks, and then repair the OS 10.7 or 10.8 partition using Disk Utility. Step 2: Once you hear the boot chime, hold down C key on your keyboard or the Option key until you see the Install Disk or Apple logo show up. You can use that disc, or if you have a later macOS version, use a newer disc for the same purpose. Step 1: Place the install DVD that came with your Mac in the optical drive and reboot. This process forces your Mac to boot from the install DVD placed in the optical drive. To do that, open the Trash, control-click the offending item, and select Delete Immediately.Boot Your Mac From an Install DVD (For Older Macs) Try deleting any problematic files or folders individually. If you can’t empty the Trash using the GUI (graphical user interface) in macOS due to a specific file or files, run through the pointers below the next time. Alternative Ways to Delete Problematic Files in Trashĭeleting the Trash using Terminal is quick. Open the Launchpad and select Other > Terminal.ĥ. On a Mac running macOS 10.10 Yosemite or earlier, emptying the Trash using Terminal is relatively uncomplicated.ġ. Delete the Trash in Mac Using Terminal (macOS Yosemite and Earlier) Hence, if you prefer confirmation before deleting each time, you can use the i (interactive) option-e.g., sudo rm -ri. Type sudo rm -rf in step 2.Įmptying the Trash permanently deletes the files (unless you’ve set up Time Machine on your Mac). If Terminal fails to delete a specific file or files, adding the f (force) option will override issues caused by conflicting permissions. You won’t receive a confirmation, so it’s best to double-check. Terminal will delete the specified items from the Trash.