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- #How to reformat macbook pro 2015 without disc how to
- #How to reformat macbook pro 2015 without disc mac os
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The version of Sierra I had was before this MacBook Pro was released and wouldn’t boot it. Some newer Mac's have Lion Internet recovery built in where the firmware will install the Lion Recovery/OS back onto a completely blank/new hard drive. I had an external hard drive with various partitions of previous MacOS systems. TimeMachine of 10.7.2 and later can be booted from it's Lion Recovery Parttion as well just to restore only, cloning is better process because it gives full access to everything like before on the internal drive. Hold the option key and you can boot from the external drive and format and clone everything to the new internal drive. The newest Macs ship with a Recovery partition rather than a separate external reinstall disk, and if you’ve ever rebooted a newer Mac, iMac, MacBook Air, or MacBook Pro with an SSD from the Recovery partition to reformat the drive, you may have noticed that by default the Security Options button is greyed out in the Disk Utility. Hold these keys down until your MacBooks screen goes blank and the computer restarts itself. You will be presented with the macOS Utilities screen. Restart and at the same time press COMMAND + R keys. To force a restart your MacBook, you need to press and hold down the Command () button, the Control (Ctrl) key, and the power button at the same time. Yes, a simple search revealed that you can do a complete clean install of your MacBook. If you want to be super security conscious, you can select the Security Options button.
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#How to reformat macbook pro 2015 without disc mac os
Select Erase and ensure that the Format is Mac OS Extended (Journaled).It should default to this option.
#How to reformat macbook pro 2015 without disc how to
If you want to replace the drive, there is software called Carbon Copy Cloner than can clone both the Lion OS X Partition and the Lion Recovery Partition to a external drive intact (excpet what's in the Trash, no Filevualt, no bootcamp, use free Winclone for that) How to Hard Reset MacBook, MacBook Air, or MacBook Pro. In Disk Utility, of OS X Utilities, select the partition (in the lefthand column) that you created in the previous step. Lion is downloaded from apple's servers, you need AppleID and a fast reliable internet connection with no bandwidth caps limiting you. Well Lion has a Lion Recovery Partition on the drive you can access by holding command r and booting, there you can erase the Lion OS X partition completely (all files and programs) and reinstall Lion or simply reinstall Lion if there is a issue with it (no programs or files are touched in this second procedure)