Among other things they can create a complete copy (Disk Image) of your Mac, restore that image once you’ve repaired your Mac, and let you startup from the external drive the backups are stored on.
This may sometimes be the only way to get to fix (or at least rescue data) from your Mac, particularly when you can’t get it online or its drive has become damaged. If you do have a connected external drive with a Time Machine backup then you can use Recovery Mode from the backup. (There are probably hundreds, if not thousands, of different errors that can occur while installing an operating system.You keep backups don’t you? You really should. The error was probably caused by attempting to install macOS Sierra onto a SSD that contains an APFS container, but it's impossible to be certain because you didn't quote the error message. I read somewhere it may be a firewall issue with internet recovery? Select the volume that you created in the previous step in the left pane. The volume must have a size that is greater than or equal to the amount of used space on the volume Macintosh HD - Data. Press command-2 to show devices, containers, and volumes.Ĭonnect an external data storage device (EDSD) to the Mac.Ĭreate a blank HFS+ (Mac OS Extended + journal) volume on the EDSD. If macOS Recovery offers to install macOS Sierra or earlier, then you've booted the wrong version of it.įollow the instructions if you're prompted to authenticate. Restart the Mac, and then immediately hold option-command-R until the Apple logo is displayed. If you want to destroy the partition table and start over, then do the following: Unfortunately, I think that it would be virtually impossible to reconstruct the layout of the SSD and reinstall macOS without physical access to the Mac. I don't intend any offence, but if you don't know how to boot the appropriate version of macOS Recovery, and you don't know the difference between an internal and external volume, then you shouldn't be making any changes to the layout of the Mac's internal SSD. You also appear to have incorrectly copied the macOS Mojave installer to an internal volume instead of an external volume. I read somewhere it may be a firewall issue with internet recovery? I would take it to a local fix it shop but its closed until Tuesday and I don't want to have to wait that long so maybe you guys have any ideas? This is what the SSD looks like.Īs /u/Durpishhh has already said, you appear to be using macOS Recovery 10.12 (Sierra) or earlier, which can't read or manipulate APFS objects. I think the reboot installer is a moot solution anyways until I can get out of internet recovery mode? Now I'm back at the command not found issue the next time I try. I got the installer, and got past the command not found issue with the createinstallmedia terminal command, but then got an error I think after it loaded or somewhere down the road. When looking at some solutions online for similar issues I see the reboot installer stuff but haven't had luck there either. What's strange is I originally did the same thing on my older Mac, as practice - reverted from Catalina to Mojave using internet recovery - and it worked fine (though that computer's not partitioned).
Now, I'm on internet recovery mode and the I do first aid on my AppleAPFSMedia, it says corruption is found and "to repair the startup volume, run first aid from recovery." But I can't get to that recovery mode after I restart and do command+R it just goes back to the spinning globe/internet recovery. I had created a volume/partition, and then wiped the data on the APFS disks.
Whenever I reinstall Sierra it loads and then ends with an error. I haven't deleted anything on my SSD (because I don't think you're supposed to?), and I'm not worried about losing anything because my stuff is on the cloud. So my original goal had been to partition my Mac so I could have Mojave on one disk and Catalina on another.
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