can't extend partition

[guido.coza]

I just installed monterey.
The history, I was running Mojave on a mac OS journaled ssd
I needed to upgrade, but could not because of the format of the drive 125gb (1tb packed up 4 weeks ago)
I cleaned up as much as I could and partitioned the drive with a 50GB APFS partition.
Downloaded monterey and loaded new partition with migration assistant.
Now I would like to add the 78gb of the "Old" partition to the boot partition.
I formatted the partition already to APFS but can not add it to the boot partition.
As soon as I click on the boot partition the + - signs are greyed out. I can create container, create further partitions on the 80GB p"drive" but nothing on the "Caution ! disk....!" drive. I only have 6gb free space now

 

[joevt]

Connect this Mac to another Mac and boot it into Target Disk Mode. Then use Disk Utility on the other Mac to make changes?

Provide output from diskutil list

 

[Ben J.]

Why not just select the old partition and delete it?

 

[kitKAC]

Why not just select the old partition and delete it?

This.

 

[guido.coza]

This

 

[guido.coza]

Why not just select the old partition and delete it?

can't does not allow it!

 

[Madonion]

bet you have Mac fee installed that looks like the quarantine folder I believe you have to go to the app to sort it out as its locked

 

[bogdanw]

Backup your data on an external drive and make a clean install with a bootable installer https://support.apple.com/en-us/HT201372

 

[guido.coza]

bet you have Mac fee installed that looks like the quarantine folder I believe you have to go to the app to sort it out as its locked

Not that I know of and I checked if it is not hidden deeeeeep within the belly of the mac NO

 

[guido.coza]

Backup your data on an external drive and make a clean install with a bootable installer https://support.apple.com/en-us/HT201372

Yes that's what I am doing now. Making a time machine back-up (BTW had to delete 3 gb of files before it could do the backup. seems a minimum of 4gb of free space is needed to make a TM backup.
Than want to format the internal ssd via utility, hope that works,(????) and than install from TM