I understand the bless comand but will this not change the boot partition permanently? I dont have a problem to boot from the right partion.
no I have the time to deal with this problem again.
Again further details how I have done it:made a fat 32 partition in my intel iMac copied all the files from my working USB-Boot-Stick to the partition Started the mac by holding the option key No I could choice the boot partition (my new Fat 32 boot partition with all files from the working usb-boot-stick) got the eror:
app.efi: LocateProtocoll(AppleLogging) succeeded
error: no such partition
could it be that there have to be done other work that the fat32 boot partition will find the exact file to boot.
I have made the USB-boot sticks with Rufus. I dont kow if there were made changes by rufus.
thank you very much.