I have a MacBook Pro 2015, two days ago after I tried to dual-boot with Ubuntu I lost my access to my 'Macintosh HD' partition. Most especially I had a FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF partition, as such I followed the procedure given in this link: How to fix broken GPT, GUID and unmountable, no type volumes?
But once I execute "sudo fdisk -i -a hfs /dev/disk0" when I execute I obtain:
gpt create: /dev/disk0: error: no room for the backup header
I'm stuck, could anyone help me ?
Thanks in advance.