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BANGKOK 22 March 2019 03:10
Thomas J

Macbook Pro boots but shuts off after IOS update

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I got an update notice and downloaded the update.  Afterwards my computer will boot but immediately after loading will shut down.  I ran a disk utility and it says the disk has errors and can not be repaired.  Any suggestions?  I can connect to the internet via an Ethernet cord but it says the disk is locked. 

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When you say it "will boot".  What do you see on your screen before it shuts down?

 

When you ran the update did you notice anything that said 'firmware update'? When it was updating did you hear it chime/beep at all?

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9 hours ago, whatevs said:

When you say it "will boot".  What do you see on your screen before it shuts down?

 

When you ran the update did you notice anything that said 'firmware update'? When it was updating did you hear it chime/beep at all?

I don't recall if it chimed i don't think so.   The notice said it was an update to the operating system.  When it boots the apple logo comes up and the bar will load such as the picture attached.  When bar is finished, the computer will turn itself off.  I have tried to reboot using the recovery disk on the computer instead of the main drive.  No luck.  When I run the disk utility to repair it says it can not repair the disk.  It is a solid state disk so I would not think it would be prone to the typical failure of a disk drive. 

download.png

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Sorry for the delay in responding.  I believe you tried to start the mac in recovery mode by holding down Command+ R at startup?  When you then tried to repair the disk it said the disk was locked?  Is my understanding correct?

 

If so do this:

Startup from your Recovery HD again (Command R.) After the Utility Menu appears select Terminal from the Utilities menu item in the screen's menubar. Paste the following at the Terminal's prompt:

 

mount -uw /

 

Press Return. Quit the Terminal then restart the computer.

 

Let me know

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Have you tried to reinstall the operating system from recovery mode?  Am I making sense?  Hard to know someone's level of IT skills online.  Tell me if I need to simplify.

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Could you also tell me what version operating system you were running (if you can remember).  There are some things we may be able to do in single user mode with UNIX commands. It would also help to know the model of your device i.e roughly how old is it?  You say Macbook Pro-is that one of the new Mac Pro's or an older model?

 

If it helps to re-assure i'm an Apple Certified Mac Technician.  I do this for a living.

 

 

Edited by whatevs

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8 hours ago, whatevs said:

Have you tried to reinstall the operating system from recovery mode?  Am I making sense?  Hard to know someone's level of IT skills online. 

Yes I tried reinstall from recovery.  It won't because of the bad disk

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8 hours ago, whatevs said:

Could you also tell me what version operating system you were running (if you can remember).  There are some things we may be able to do in single user mode with UNIX commands. It would also help to know the model of your device i.e roughly how old is it?  You say Macbook Pro-is that one of the new Mac Pro's or an older model?

It is an older Mac probably about 5 to 6 years old.  I had just "upgraded" to the current operating system on Itunes. 

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8 hours ago, whatevs said:

If so do this:

Startup from your Recovery HD again (Command R.) After the Utility Menu appears select Terminal from the Utilities menu item in the screen's menubar. Paste the following at the Terminal's prompt:

 

mount -uw /

Did this.  I get no such file or directory message

 

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Two important questions"

Do you remember password protecting your firmware?

Do you remember whether your encrypted your disk?

 

 

Regardless, try this -put the mac into single user mode like this........

 

...turn your computer off, then press and hold Cmd + S when your computer boots.  What you will now see is a black screen with lots of white text running down the screen.  If you've password protected your firmware it will not allow you do this so and there is not much I can do either.  If you have no firmware password the white text thing will start and you should wait for approx 4 minutes for it to stop doing it's thing

NB: If you’ve encrypted your drive, you’ll need to select the relevant user account and enter the encrption password you set to decrypt it if you don't see a request for a password you're ok.

 

Now type fsck -fy  Type it exactly like I have written in bold with the space between fsck  and -    Once you have typed it press return it will throw up more text when it looks like it has stopped you may see a message which may something like:

 

**The Volume Macintosh HD could not be repaired.**

****The volume was modified****

 

or it will say:

 

**The volume Macintosh HD was repaired successfully**

****The volume was modified****

 

Once you see one of those messages reboot your computer.  If I remember correctly typing reboot  or exit will reboot it.  If the message was **The Volume Macintosh HD could not be repaired.**  Then start it again in single user mode and repeat the process. There’s no harm in trying multiple times, since the process makes changes to your drive on each pass. If it gets to 4 times with no luck, I'd give up.

 

Do you have another mac in the house? My next option would be to attempt to start the drive from another device and trying with something like Disk Warrior. 

 

If you took your device into an Apple Store right now they will tell you that your HD has failed and that would be that.  We can try a few other things before giving up

 

 

 

Edited by whatevs

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4 hours ago, Thomas J said:

It is an older Mac probably about 5 to 6 years old.  I had just "upgraded" to the current operating system on Itunes. 

That's good.  I'm going to assume this is a 2012 Macbook Pro.  They are nice to work on because it's easy to open them up and swap parts around. 

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28 minutes ago, whatevs said:

Two important questions"

Do you remember password protecting your firmware?

Do you remember whether your encrypted your disk?

I have to enter a password to log in to the computer but I never password protected any firmware or encrypted the disk

 

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good.  I assume it was your computer from the outset?  If it had a previous owner they may have set one.  Anyway you'll know soon enough

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48 minutes ago, whatevs said:

Now type fsck -fy 

I have run it twice.  I get the message that the disk McIntosh HD could not be completely verified. 

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8 minutes ago, Thomas J said:

I have run it twice.  I get the message that the disk McIntosh HD could not be completely verified. 

Just ran it a third time.  Same error message that the HD could not be completely verified.  When I reboot the apple logo comes up load bar fills about half way then shuts down computer.  I tried to plug in a flash drive and got that it could not load image except to GPT partition.  I tried on my PC to format to GPT and it says that flash drive can not be partitioned.   Apple may be a superior product but it sure makes things difficult. 

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