#Reinstakk macos lion on macbook pro without losing data install#
#Reinstakk macos lion on macbook pro without losing data mac#

#Reinstakk macos lion on macbook pro without losing data mac#

Mac Studio: Rightmost Thunderbolt port on back.M1 and M2 Mac laptops: On the left side of the laptop, the Thunderbolt port on the left M1 iMac: Rightmost Thunderbolt port (on back).M1 Mac mini: the Thunderbolt port on the left, furthest from the HDMI port

Intel 2019 iMac Pro (rack mounted): the Thunderbolt port closer to the power button Intel 2019 iMac Pro (tower): the Thunderbolt port farther away from the power button on the top of the computer Intel 2020 iMac or iMac Pro: the rightmost Thunderbolt port on the back of the unit, whether it’s four (iMac Pro) or two (iMac) Intel Mac laptops: when looking at the left side of the laptop, the Thunderbolt port at right Intel Mac mini: Rightmost Thunderbolt port The unresponsive Mac will show an Apple logo intermittently while restoration proceeds. To restore your Mac’s firmware, after ensuring you have made every effort to extract needed files: On the Mac running Configurator, in its device window, select the Mac you’re connected to, and then choose Actions > Advanced > Restore and click Restore. It’s a last-ditch process, and if you have unique data not backed up on that Mac, you should determine whether there’s any other way to get data from it before proceeding. If this process fails, you may be unable to recover any data from that Mac, and it requires a complete restoration, which resets the Mac and erases its contents.

You can disconnect cables from the other Mac.

You can restart into recoveryOS as described above, and then reinstall macOS without erasing any of your files. In that case, however, the Mac is now responsive and has recoveryOS correctly installed.

macOS may still not be working correctly, even if the revive functions.

The unresponsive Mac will show an Apple logo intermittently during revival.

Select the Mac you’re connected to, and then choose Actions > Advanced > Revive Device and click Revive.

On the Mac running Configurator, in its device window, your other Mac should appear if you have the cables connected correctly.

Now you can attempt to revive the firmware, which keeps all your files intact: Release Control, Option, and Shift, but keep holding down the power button for last 10 seconds until a DFU icon appears in the Configurator app on the attached Mac.

M1 or M2 laptop: With the Mac plugged back into power, press and release the power button, then immediately hold down the power button along with the left Control key, the left Option key, and the right Shift for about ten seconds.

Its status light should glow amber now and a DFU icon should appear onscreen.

M1 Mac mini or Mac Studio: Making sure the power has been disconnected for more than 10 seconds, hold down the power button, plug the computer into power, and release the button.

M1 iMac: Disconnect from power, hold down the power button, plug the computer into power, and after at least three seconds, release the button.

Intel Mac laptop (any model): Plug your Mac in, and then hold down the power button and the left Control key, the left Option key, and the right Shift all at once for about three seconds.

Intel Mac mini, iMac, or iMac Pro: Hold down the power button, plug it into power, and keep holding down for three seconds.

The instructions are grouped by models below: In some cases you’ll need to plug in power while holding down the power button-you might plug your Mac into a power strip or surge protector so you can just flip a switch at the appropriate moment instead of trying to hold the power button and plug an AC cord into a socket.

Now start it up in a way that varies by model while restoring power to it.

See the list at the bottom of this article to find yours. One Thunderbolt port on every Mac covered by this technology is specially equipped to allow revival or restoration.

Connect the Mac that’s reviving the other via a particular port on the unresponsive Mac.

You’ll need to plug your Mac back in during step 4 at the appropriate point in the sequence for your model. If it’s a Mac mini or iMac Pro, make sure there’s a monitor attached so you can see progress later, during revival (or restoration).

On a laptop, hold down the power button for about five seconds to ensure it’s powered down.

Disconnect your unresponsive Mac from power, whether it’s an AC-powered iMac, iMac Pro, or Mac mini, or a laptop plugged into a power adapter.

#Reinstakk macos lion on macbook pro without losing data install#

Install Configurator 2 onto the Mac you’re going to use to revive your unresponsive computer.In none of the below cases will you see anything on screen until after Configurator gets to work.