I know that many people had similar problems, and I've tried to fix them with the answers I found, but without luck.
- Device: iMac 27 "mid-2011
- OS: Latest High Sierra (I think the recovery mode might be the Lion version?)
I have a Linux partition with High Sierra and use it without problems. Now I've also created a bootcamp partition and installed Windows 7. After that, I can not boot to Mac anymore and I see in recovery mode that the main partition type is now FFFFFF-FFFF …
The partitions in a nutshell are as follows:
- High Sierra, ~ 850 GB
- Linux, ~ 100 GB <- This can be deleted
- Bootcamp, ~ 49 GB <- This can be deleted
What I have tried:
I did that
gpt destroy disk0 and afterwards, all volumes returned
Get add -i 1 -b 40 -s 409600 -t C12A7328-F81F-11D2-BA4B-00A0C93EC93B
Get add -i 2 -b 40 -s 409600 -t 7C3457EF-toget11AA-AA11-00306543ECAC
and so on ..
then try to check the volumes with
diskutil verityVolume disk0s2 I get
"Error Starting File System Check for disk0s2: Unknown File System (-69846)"
Now I have reached the point where I do not know what to do anymore.
Where I started:
And where am I now:
All I want is for MacOS to work in the simplest way with the data it contains and all other partitions are available.
Or I want to know how to simply format the drive and remove all partitions so I can reinstall (Plan B).
All comments are welcome! Many Thanks!