Question Can't boot into MacOS at all ?

atlasgaming20

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Jan 13, 2018
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I was following this video to partition my bootcamp to give Windows more space, after doing this and restarting I noticed no changes other than the fact that when I tried to boot up MacOS I quite literally can't, when holding down Option during startup I don't get the option to choose my boot drive. When trying to restart MacOS from Bootcamp on Windows I get an error saying " bootcamp could not locate the MacOS boot volume" How can I get back into MacOS? Is there anyway I can fix this?
 

atlasgaming20

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Jan 13, 2018
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Have you tried to launch into recovery?

Yes I have, I tried it again just in case I was doing something wrong (LOL) But like normal I just boot into Windows without anything else appearing.
 

atlasgaming20

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Jan 13, 2018
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When in recovery are you able to go into DU and see your Mac OS drive? Then do first aide on it and quit DU and choose Mac OS as the start up?
Nono, I quite literally can't load into recovery and it only boots me into Windows, I've tried every combo of Command-R only for nothing to happen other than me getting onto the Windows login screen
 
Sep 14, 2021
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Alright so any number of issues may be the case. Since recovery mode like you said (I'll assume you followed the correct process) didnt work it might be an internal storage issue where the OS was either damaged or corrupted. What I can suggest is because I know Macs (at least the one I have in my house) support external storage booting either flash windows or a form of Linux onto the device to run system diagnostics on said internal storage. If the drive itself is not the issue you need a new install of Mac OS which in that case recovery mode should have helped but if not all you can do is flash a new OS whether it be windows, linux or mac os just move on. (by the way by internal storage issue I mean the drive itself may be damaged) Hope this helped at least some :)
 

atlasgaming20

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Jan 13, 2018
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Alright so any number of issues may be the case. Since recovery mode like you said (I'll assume you followed the correct process) didnt work it might be an internal storage issue where the OS was either damaged or corrupted. What I can suggest is because I know Macs (at least the one I have in my house) support external storage booting either flash windows or a form of Linux onto the device to run system diagnostics on said internal storage. If the drive itself is not the issue you need a new install of Mac OS which in that case recovery mode should have helped but if not all you can do is flash a new OS whether it be windows, linux or mac os just move on. (by the way by internal storage issue I mean the drive itself may be damaged) Hope this helped at least some :)
Would I be able to externally flash MacOS? Sorry I'm not really used to all of this haha
 

spinningstill

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Jan 15, 2018
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Yes I have, I still just boot into Windows unfortunately
And you have tried the different key combinations?

Restart your Mac again and immediately press Command (⌘) and R to enter macOS Recovery. If Command (⌘) + R didn't work for you, try out the Option/Alt + Command (⌘) + R when you boot up to activate Internet Recovery Mode. Now, you can access an Apple server to download the latest macOS version.

https://support.apple.com/en-us/HT201255
 

atlasgaming20

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Jan 13, 2018
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And you have tried the different key combinations?

Restart your Mac again and immediately press Command (⌘) and R to enter macOS Recovery. If Command (⌘) + R didn't work for you, try out the Option/Alt + Command (⌘) + R when you boot up to activate Internet Recovery Mode. Now, you can access an Apple server to download the latest macOS version.

https://support.apple.com/en-us/HT201255
Nope, neither one worked :(
 

spinningstill

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Jan 15, 2018
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Right it sounds like the wrong partition was formatted.

A MacOS bootable USB is in order. Maybe visit an Authorized Apple Care facility or ask a friend to make one for you from their machine.

I did not catch what year your computer is.

Grace and peace.
 

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