Hi there,
I actually ended up taking the macbook air to apple and they said they weren’t repairing computers this old (it’s 2013) and gave me names of authorized repair people I might try.
They didn’t get farther than me in their diagnostics or at least didn’t tell me anything new. I plopped the laptop into the backpack I had carried it in. Didn’t occur to me to turn it off, it’s never been a problem, but a few hours later I went to pull it out and it was scortching hot. I’ve never experienced any electronic device this hot. It wasn’t sitting in the sun or anything, it generated all this heat by itself.
Anyway, I switched it off and left it on the shelf for a couple of weeks, figuring it was cooked, but the next time I started it, it actually showed me the log-in screen, NOT the flashing disk symbol. The thing is, the cursor was frozen. And the keyboard probably too, because when the screen went to sleep I couldn’t wake it up by hitting either the trackpad or the keyboard.
On a whim, I started it again with command/R and this time, the cursor worked fine. Disk utility showed me Macintosh HD (Unlike previous time when it only showed OSX base system). It shows 500 GB “shared by 4 volumes” (which seems odd to me as it’s not partitioned.)
I asked Disk Utility to repair and it came back with –
Running First Aid on “Macintosh HD”
First Aid process has failed. If possible back up the data on this volume.
Under DETAILS it read the following –
Repairing file system.
Volume was successfully unmounted.
Performing fsck_apfs -y -x /dev/rdisk2s1
Checking volume
Checking the container superblock
Checking the EFI jumpstart record
Checking the space manager
Checking the object map
error: (old Oxe8f2a) om: btn: dev_read (954154, 1): input/output error
Object map invalid
The volume /dev/rdisk2s1 could not be verified completely
File system check exit code is 8.
Restoring the original state found as mounted.
File system verify or repair failed.
Operation failed…
Forgive any typos, I copied it manually, I hope I got it right.
That being said, I have no idea what any of this means, and why the log screen looks intact, just not accessible.
I connected an external disk to see if I could maybe get a more recent backup from the one we have, but it did not show in the Disk Utility sidebar in Restore mode.
And kinda to cheer me up some more, tidbit-talk site tells me my browser is too old to log on…
We’ve done our own hardware repairs many times in the past (when the insides of the machines were more easily accessible) but because of this new scenario I am wondering if it’s not hardware and there’s another way to bring it up from the dead, i.e. should I try to reinstall the system, and/or should I just erase it and start anew or something else.
I asked at the apple store about a thunderbolt to thunderbolt cable (or some USB /thunderbolt combo) to hook it up as an external drive to my iMac (command/T) but they wanted $40, and I hesitated to spend $40 on a cable I might only use once given that at the time all I got was the flashing question mark and no Macintosh HD.
Thanks again,
Brenda