I did not use USBOpenCoreAPFSloader3 app during my attempted update for my iMac10,1. Would you be able to elaborate on the use of this app including the purpose?
Thx
According
#11,989, it seems I should have used an additional USB loaded with USBOpenCoreAPFSloader3 during the installation process? If this is the case, the instruction on the 1st page will need to be updated from "You need to use tools provided by
@jackluke from
GitHub or this
post and to follow this
documentation." to "You need to use tools provided by
@jackluke from
GitHub and this
post and to follow this
documentation.". The "documentation" will also need to be updated to reflect this extra step.
Tried to create a bootable USB stick for USBOpenCoreAPFSloader3 and always failed at
sudo mount -t msdos /dev/disk3s1 /Volumes/EFIext
with error message
mount_msdos: /dev/disk3s1: Resource busy
???
Update: Managed to install USBOpenCoreAPFSloader3 to a 4GB USB stick instead of the previous 1GB. The macOS seems having trouble creating EFI on USB memory stick smaller than 4GB.