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So.

I have a mid-2015 MacBook Pro (15'') running macOS 11. Recently, I wanted to set up a dual-boot with Debian. It worked and I could boot on the two systems. I've done some sh... weird things and now the EFI of Debian isn't recognized by the system, also the Mac APFS Partition is unmounted, and not mountable because the Recovery system OF THE MAC (not the one on the Macintosh APFS Partition) is from 2015 so pre-APFS. I'm stuck with this screen or the old Recovery partition. I have on another disk a disk image of the COMPLETE Macintosh Partition (not only the data). The screen on my mac Can someone help me to mount the disk image in APFS and put it on my mac (making it bootable) ? Thanks !!!!

PS: Yes, it's the same problem as this question, but the answer isn't understandable. So don't give me some commands without explanations, please.

PPS: If you need more infos, ask under this post.

omerien
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  • What is not understandable about the answer? – mmmmmm Aug 28 '21 at 16:25
  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. – Community Aug 28 '21 at 16:25
  • @mmmmmm I'm not a professional about shell and English isn't my native language, so I can't understand what the command does and I don't want to execute commands that I don't understand. I need that someone explain to me what is the objective of each command. – omerien Aug 28 '21 at 17:14
  • Have you looked at the man pages for gpt? Each group of commands does have a description in that answer giving the objective – mmmmmm Aug 28 '21 at 17:23
  • Have you try boot in internet recovery mode cmd + alt + r ? –  Aug 28 '21 at 17:27
  • @Jean_JD Internet Recovery is by default chose when I boot in Recovery (don't know why) – omerien Aug 28 '21 at 17:53
  • So, in Recovery Mode, can you see your internal disk organization? From the top menu Utilities/terminal, can you give the results of the command diskutil list? –  Aug 28 '21 at 18:01
  • The result is too long, even with cuts, I'll give you a file on github with the results in a few minutes. – omerien Aug 28 '21 at 18:05
  • https://github.com/omerien/omerien/blob/main/applestackexchage.1 – omerien Aug 28 '21 at 18:07
  • OK. Can you add the results of command : gpt -r show disk2 –  Aug 28 '21 at 19:25
  • https://github.com/omerien/omerien/blob/main/applestackexchange.2 – omerien Aug 29 '21 at 08:57

1 Answers1

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You can try from the terminal in Recovery Mode, modify the ffff partition by apfs structure. The commands are :

diskutil umountDisk disk2

then

gpt remove -i 2 disk2

then

diskutil umountDisk disk2

then

gpt add -i 2 -b 409640 -s 820414520 -t 7C3457EF-0000-11AA-AA11-00306543ECAC disk2

then you give the result of

diskutil list internal
  • It actually worked ! Here's the results of the last command : https://github.com/omerien/omerien/blob/main/applestackexchange.3. Thank you so much ! – omerien Aug 29 '21 at 12:48
  • Great. Happy for you. ;-} –  Aug 29 '21 at 12:57