Fixing Corrupted APFS Container Partition Tables
If you resized your macOS partition using Linux or third-party partition editors and now your APFS container shows up as FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF in diskutil list, the GUID partition map is corrupted. Here is how to attempt a recovery or reset the SSD.
Step-by-Step Recovery Attempts
- Try gpt command via Recovery: Boot into a macOS USB Installer. Open Terminal and unmount the disk:
diskutil unmountDisk disk0. Rungpt show disk0to check the partition table structure. Sometimes, rewriting the partition type back to APFS usinggptcan restore the volume. - Avoid Third-Party Partitioning: In the future, never resize macOS APFS containers using Linux partitioning tools (like GParted or Mint's installer). Always use Disk Utility inside macOS to resize APFS partitions safely.
- Clean Install: If the partition table is completely destroyed, boot from your OCLP USB Installer, open Disk Utility, select the root drive, and click 'Erase' (GUID Partition Map, APFS). Restore your data from your Time Machine backup.
Original Question: "Have destroyed my partition table, I think."
I have now a brand new Macbook Air and started to modify my old Macbook Pro mid 2012, still very capable, to work as alternative, since we are two, me and my wife. I have a OCLP macOS Sequoia working good and and old Linux Mint 21, but in a small 100GB partition. The plan was to reduce the space of macOS, a new Linux in a bigger space and let the 100GB for ExFAT with virtual machines.
So, after the migration and backup, I did reduce the container of Sequoia and also a small Catalina for emergencies, and leave a space for new Linux.
After booting, surprise, only Linux was in booting list and the USB stick with Linux Mint Live. Mint won't install, the only option was to upgrade the old Linux, but in the small partition. Besides, I was wondering what happened, at that point. I could not see APFS volumes anymore, could not fix it with USB Catalina installer (no problem was found), and finally the diskutil list only the container with FFFFFF in type/name description - this is no good.
My guess, it's all over, I will have to restart the SSD from zero. Not such bad thing because of the backup, but I decide to make this report for the community, they must know the true, in the D day, when it was all deleted...
My new plan is, probably, keep a Catalina in a 128GB partition and try to access iCloud from there to keep it usable for this purpose, and let the rest for Linux for heavy work.
By the way, I like Sequoia, and honestly, Tahoe is not really better, just a bit different, I might talk about later in the proper subreddit. Don't be shy of keeping it with OCLP, just don't mess with your disk!
[link] [comments]
⚠️ WARNING:
Installing macOS Tahoe on unsupported hardware is NOT supported by the OpenCore Legacy Patcher developers. Please be aware that numerous users have attempted installation, often resulting in serious issues including hardware malfunctions and complete data loss.
Also understand that OCLP supports over 83 Mac models! Just because it "worked" on one, does not mean it will not cause major issues on your device.
NOTE: You might have seen a new piece of software called OCLP-Mod. The OCLP developers do NOT recommend using any modification of the genuine OCLP software. Keep in mind, anyone is able to make a fork of OCLP (a fork is a modification of the original project). No other software is checked and verified safe or actually working on all 83 Mac models.
In closing, please only use the genuine version of OCLP. Do not install Tahoe until a fully compatible public version of OCLP is released. Thanks!
Post a Comment