2016 Intel MacBook Pro. No previous disk issues, tried to erase with disk utility in prep for sale and erased OS and files, everything. Multiple errors from Disk first aid. Reinstall attempts Sierra load but fails. Re-erase disk fails. Time machine backup install does not recognize external disk. Any other options?
MacBook Pro 15″, macOS 12.7
We may no longer install Sierra or High Sierra or earlier OS X versions using Recovery. Apple inexplicably and silently pulled the plug on that option a while ago. It may also explain the inability to find the TM backup drive, since the Mac's built-in Recovery firmware is expecting to find services that are no longer available.
... all disks pass disk first aid.
There should not be more than one internal device to erase. The apparent reference to multiple disks does not seem correct to me.
Begin with Use Disk Utility to erase an Intel-based Mac - Apple Support. When selecting the device to erase, be sure to include Step 4. There should not be more than one disk.
Try using the key combination described in How to reinstall macOS - Apple Support under the heading "If you're using any other Mac" when booting Recovery:
If successful, that will result in Monterey. High Sierra and earlier are gone.
Assuming the above works, and given your desire to sell that Mac, when the Mac restarts and the "Hello" screen (hopefully) appears, just shut down the Mac. That is the condition in which to sell it.
We may no longer install Sierra or High Sierra or earlier OS X versions using Recovery. Apple inexplicably and silently pulled the plug on that option a while ago. It may also explain the inability to find the TM backup drive, since the Mac's built-in Recovery firmware is expecting to find services that are no longer available.
... all disks pass disk first aid.
There should not be more than one internal device to erase. The apparent reference to multiple disks does not seem correct to me.
Begin with Use Disk Utility to erase an Intel-based Mac - Apple Support. When selecting the device to erase, be sure to include Step 4. There should not be more than one disk.
Try using the key combination described in How to reinstall macOS - Apple Support under the heading "If you're using any other Mac" when booting Recovery:
If successful, that will result in Monterey. High Sierra and earlier are gone.
Assuming the above works, and given your desire to sell that Mac, when the Mac restarts and the "Hello" screen (hopefully) appears, just shut down the Mac. That is the condition in which to sell it.
Did you begin with the following: Erase your Mac and reset it to factory settings - Apple Support?
Too late for that.
Command-R to base OS works, but all options fail.
Disk First Aid restore failed so ran erase again and now all disks pass disk first aid.
Sierra install repeatedly errors out in the last 9-11 seconds of install.
Time Machine does not find external drive, drive appears OK when inserted into other computers.
Laptop back running a little hot
Success!
Thank you.
Replace OS after Disk Utility erase fails.
