Need help with non-booting MAC

Sheldon Livingston
Sheldon Livingston used Ask the Experts™
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In the image below the Verify Disk and Repair Disk options are disabled... whether I select Disk 0 or the partition.

It shows 27,297 files.

What does this mean? Are the files recoverable? I get this message after attempting a Internet fix.

This started with, all of a sudden, getting a white screen with a flashing question mark.

MAC First Aid
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AlexSenior Infrastructure Analyst

Commented:
If you boot from your Mac's internal drive, power it down and on again while holding down the Options key on the keyboard.

When the startup manager appears, if you see your startup disk in the options, select it. If that doesn't work, repeat the process but this time select Recovery HD from the startup manager. Your Mac should now boot from its recovery partition.

Select Disk Utility from the Utilities menu. When it opens, choose your startup disk and then click the First Aid tab. Click Repair to verify and repair the disk and then try and start up normally. Still no joy?

You'll need to start up again from the Recovery partition and reinstall OS X.


Ripped it off a mac site, so basically it can't find your system folder which is why it's not booting.
Sheldon LivingstonConsultant

Author

Commented:
Thanks Alex... do you think that this means all hope is lost?
AlexSenior Infrastructure Analyst

Commented:
Not at all

Whilst I personally hate Apple Mac's, they have a resilience unlike most other machines. Basically run through what was recommended I.E the repair, if that fails, boot from the recovery partition, if that fails, you will need to rebuild.

As for moving the files off so they don't get trashed, I'm assuming they would be put onto iCloud so it "should" resync everything back for you.

Regards

Alex
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AlexSenior Infrastructure Analyst

Commented:
Oh btw,

See if you can click Disk0 and then do the repair functions.

Regards
Alex
David FavorFractional CTO
Distinguished Expert 2018

Commented:
What you're describing is a very rare occurrence, usually a disk failure.

Best not to attempt mucking around with any operation which might write to this disk.

Better to attach another disk via Thunderbolt, USB or Firewire + boot from the external disk.

Then copy your data off to the external disk.

If you already have backups, then you can try doing a full (obliteration) reinstall.

Consideration: If the install shows count down timer shows it will be many days till the installation finishes, then likely your next step will be to replace the disk.
Sheldon LivingstonConsultant

Author

Commented:
I rebooted holding down the Options tab. I was, for the first time, asked to connect to a network and then received a spinning globe.
After a while things started counting down (under the globe).
I ended up back at the pic below:
New imageI can select any of the 3 items on the right and still nothing is enabled if I select First Aid.
Immediately stop what you're doing right now, especially if it's an SSD and you want to recover your data.

You are missing your entire OS X partition.  What you see there is the Recovery partition which every system has.  You can't do anything right now until you recover the original OS X partition.

Get another disk and install a new OS X and run a disk recovery program.   Or get another Mac, and boot this Mac into target mode and try to recover the data.
Sheldon LivingstonConsultant

Author

Commented:
Exactly what I was looking for.

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