No EFI partition is being created after restoring USB with Mac OS High Sierra.
No EFI partition is being created after restoring USB with Mac OS High Sierra.
You can follow the steps I suggested to restore your system. After fixing the high Sierra issues, ensure the EFI folder is set up correctly. For legacy boot, try using a bootable USB with the appropriate BIOS settings and check if any devices appear during boot. If network boot isn't working, verify the network configuration and hardware connections.
Restoration of the high Sierra refers to reviving its natural state. Do you already have it set up?
Perform a clean reinstall and ensure all files are backed up beforehand. This is the ultimate solution for any issues with operating system software.
Check if the USB drive uses a GUID partition map since GUID supports EFI partitions. If it does, consider updating the BIOS even if it seems to work.
To check a guide, review the instructions carefully and ensure you follow each step precisely.
In Disk Management select any drive, then navigate to properties, move to volumes, and it will indicate whether it's a GUID or MBR.