MacBook Pro unable to boot: Difference between revisions
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{{Header | {{Header | ||
|Status=Archived | |Status=Archived | ||
|PubDate=2019- | |PubDate=2019-12-11 | ||
|Categories=Hardware, Apple, AMD GPU | |||
|The problem=Already I have discussed how to get this Mac working on [[MacBook Pro unable to boot]] and [[Install a new hard drive in a Mac]]. I was fast running out of options. | |||
After sleeping on it, thought I would go back to basics. There is something that is conflicting, but what. | |||
}} | |||
{{Faults | |||
|Device=MacBook Pro | |||
|Operating system=MacOS | |||
|Guidance=I stuck the time machine in again, held down the Alt/Option key and booted into macOS utilities | |||
[[File:MacOS recovery utilities.png|none|thumb|800x800px|Shows the MacOS recovery utilities]] | |||
Click on utilities, then terminal: | |||
[[File:MacOS utilities for terminal.png|alt=How to get to the terminal by clicking on utilities and terminal.|none|thumb|800x800px|How to get to the terminal by clicking on utilities and terminal.]] | |||
You will get: | |||
[[File:The MacOS terminal in recovery mode.png|alt=The MacOS terminal in recovery mode|none|thumb|800x800px|The MacOS terminal in recovery mode]] | |||
Most of what I am going to do is over at [[MacBook Pro GPU AMD failure|MacBook Pro GPU AMD failure method 3]], although this Mac isn’t encrypted, if yours is, there is some other stuff to do some extra stuff with this time as the hard drive was encrypted. | |||
To unlock, replace the line<blockquote>''diskutil coreStorage unlockVolume UUID''</blockquote>to<blockquote>diskutil corestorage unlockVolume UUID -stdinpassphrase</blockquote>The -stdinpassphrase will prompt you for a password in the command line. | |||
This still didn’t fix it though. | |||
I have already run a diagnostic check, but nothing came up with that. So I am going to do it again but using the internet hardware test. To get into this hold down option/alt and D, you will get this: | |||
[[File:Apple Hardware Tests.png|alt=Shows the Apple Hardware tests options|none|thumb|800x800px|Shows the Apple Hardware tests options]] | |||
Select your language and the arrow button. You will get: | |||
[[File:Hardware test screen.png|alt=This shows the hardware test initialization screen|none|thumb|800x800px|This shows the hardware test initialization screen]] | |||
I did an extended test: | |||
It did’t come back with anything. | |||
Lets go back even more to basics, I reset the NVRAM and SMC | |||
To reset the NVRAM, hold down Alt/Option, P and M down, wait until you hear three chimes. To be on the safe side I did it for six chimes, may as well make sure. | |||
Still nothing. Reset the SMC, I thought I needed to press shift, command and alt/option. But I had misread it, it was actually shift, control and alt/option. | |||
Does it boot into safe boot? No. This is very peculiar. | |||
I can only think of one more thing. Otherwise, I am going have to admit defeat. | |||
[[MacBook Pro – AMD GPU issues – how I finally fixed it|To be continued…]] | |||
}} | }} | ||
Latest revision as of 19:31, 4 September 2024
Status: Archived
Publication date: 2019-12-11
Last edited by: Garyf
Last updated: 2024 - 09 - 4
The problem
Already I have discussed how to get this Mac working on MacBook Pro unable to boot and Install a new hard drive in a Mac. I was fast running out of options.
After sleeping on it, thought I would go back to basics. There is something that is conflicting, but what.
The resolution
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Device: MacBook Pro
Operating system: MacOS
Software: No software identified
Guidance for MacBook Pro, MacOS,
I stuck the time machine in again, held down the Alt/Option key and booted into macOS utilities
Click on utilities, then terminal:
You will get:
Most of what I am going to do is over at MacBook Pro GPU AMD failure method 3, although this Mac isn’t encrypted, if yours is, there is some other stuff to do some extra stuff with this time as the hard drive was encrypted.
To unlock, replace the line
diskutil coreStorage unlockVolume UUID
to
diskutil corestorage unlockVolume UUID -stdinpassphrase
The -stdinpassphrase will prompt you for a password in the command line.
This still didn’t fix it though.
I have already run a diagnostic check, but nothing came up with that. So I am going to do it again but using the internet hardware test. To get into this hold down option/alt and D, you will get this:
Select your language and the arrow button. You will get:
I did an extended test:
It did’t come back with anything.
Lets go back even more to basics, I reset the NVRAM and SMC
To reset the NVRAM, hold down Alt/Option, P and M down, wait until you hear three chimes. To be on the safe side I did it for six chimes, may as well make sure.
Still nothing. Reset the SMC, I thought I needed to press shift, command and alt/option. But I had misread it, it was actually shift, control and alt/option.
Does it boot into safe boot? No. This is very peculiar.
I can only think of one more thing. Otherwise, I am going have to admit defeat.
