MacBook Pro 2010 only boots Windows

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Level 1

4 points

MacBook Pro 2010 only boots Windows

Hello,

I have a MacBook Pro 2010 with the "latest" supportet OS (High Sierra, I guess). While I had the MacOS in sleepmode, the battery went below the charge, that is needed in order to wake up. After attaching the powercord, it restarted and booted from windows. I then restarted and held down the Alt-key to bring up the startup manager, which would only display the windows partition. In network-recovery mode, the Disk Utility program would show the Mac partition as greyed out, won't mount, nor repair.

Only one SSD is installed. I have seen posts with similar issues, but am not sure how far this applies to mine and how to proceed. Terminal's "diskutil list" and "gpt -vv -r show /dev/disk0" lists info as seen in the attached images.

I hope someone can help me. Thank you in advance!

MacBook Pro 13″, macOS 10.13

Posted on Sep 8, 2023 3:02 AM

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Answer 1

-Bubba-

Level 6

10,326 points

Sep 11, 2023 6:40 PM in response to MrVortexXx

You can mount a disk with Terminal pretty easily using the below command (disk0s2 is 'Apple_APFS', your macOS partition) but frankly I'm not optimistic. I'm sorry to say your best bet if this doesn't work is to contact Apple Support on their website or by chat. You can call at 1-800-MY-APPLE or 1-800-APLCARE (USA) too.

diskutil mount /dev/disk0s2

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Answer 2

MrVortexXx Author

Level 1

4 points

Sep 10, 2023 12:41 PM in response to -Bubba-

Well, I would like to save the data. I do not have a backup.

As mentioned, mounting in the disk utility program is not possible. I have not tried mounting it in terminal, though, since I do not know the commands to mount a specific partition.

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Answer 3

MrVortexXx Author

Level 1

4 points

Sep 21, 2023 8:45 AM in response to -Bubba-

Unfortunately it says that it can not mount, since it is an APFS volume. Oddly enough "diskutil apfs list" will return that there is no apfs or could not find one, or something like that.

Trying the "mount_apfs" tells me to specify more parameters and list a number of parameter options, though I do not know what parameter to specify.

Do you know how to mount an apfs / how to use the mount_apfs command?

Would it make sense trying to repair the efi vlume?

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Answer 4

-Bubba-

Level 6

10,326 points

Sep 9, 2023 1:32 PM in response to MrVortexXx

What happens if you use the taskbar to restart in macOS? Click the arrow on the taskbar, then the black diamond, then "Restart in macOS..." as seen below.

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Answer 5

MrVortexXx Author

Level 1

4 points

Sep 10, 2023 3:49 AM in response to -Bubba-

This does not work, it will restart and boot in Windows again.

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Answer 6

-Bubba-

Level 6

10,326 points

Sep 10, 2023 8:51 AM in response to MrVortexXx

I see. And you've tried remounting in Recovery... I'm afraid this is quite the stumper, sorry. Do you have important data on the computer and/or a backup?

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