Factory reset macbook pro from terminal.

Mac wont stop the white screen spin. Anyone know how to factory reset from Terminal? Recovery mode etc wont work.

MacBook Pro

Posted on Aug 2, 2020 12:35 PM

5 replies

Aug 2, 2020 2:48 PM in response to Community User

The initial "chime" sound is generated in software when your Mac passes the Power-On Self Test. If it occurs and/or startup continues, your Mac is working.


The solid Apple is not in the Mac's ROM at Cold start. The Apple logo can only appear when it is fetched in the first "blob" of software loaded from a 'magic' place on the boot drive, or re-run after a Restart. Then a whole lot of stuff is initialized, and the progress Bar moves part way across. After a cold start, seeing the solid Apple appear says your drive is not completely dead.


The next step requires a lot of files by name, so the File System is initialized, and the Boot Drive is Mounted. If the drive directory is damaged, the drive can not be Mounted, so your Mac begins one pass of Disk Utility Repair. This will take an additional about five minutes. During this process, the progress bar may be extended, and will grow by an additional amount not seen on a routine startup.

 

at the end of that process (which should not take more than about five minutes), it will attempt to Mount the drive again:

-- if the drive Mounts, boot-up continues.

-- if the drive cannot be Mounted, your Mac can do nothing more, so it powers off.

-- if the process stalls, this may indicate you have Bad Blocks on your Boot drive. The re-reading of Bad blocks can take a very long time (on the order of a quarter minute for each Bad Block).

Aug 20, 2020 9:07 PM in response to Grant Bennet-Alder

Fixed the problem. You dont have to wipe the computer just reinstall the OSX it came with (or what you were running) from either the original install CD or use a USB boot drive. So i created a bootable USB drive and was able to access everything again from a ten year old computer still running snow leopard. With the 2009 models you need that install CD or USB boot with the OSX it was running to make it work. Again after deleting launch agents / daemons this happened. Computer now works fine and does updates. thanks again. helpful link https://business.tutsplus.com/tutorials/how-to-create-a-bootable-usb-drive-with-os-x-snow-leopard--cms-21491

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Factory reset macbook pro from terminal.

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