SergeV

Thank you! I was able to migrate my USB device to the Mac Mini 2012 (legacy EFI boot) using limine binary BOOTX64.EFI and custom limine.conf I had an additional inconsistent issue during the boot, where sometimes I would get an error: Isdal Attached SCSI disk umount: /deu: target is busy. umount: /: not mounted. not found - press ENTER key to reboot...I had to plug my USB device into another USB port. Maybe it got dusty. The UNRAID USB boot key never appears in the log. UNRAID's init script scans for a partition labeled UNRAID and times out because that device simply never enumerates in time — or at all.

I'm having the same "kernel panic" issue when trying to move the USB from a Mac mini 2018 to a Mac mini 2012 hardware. It used to work before, but with the latest UNRAID 7 release, it no longer boots. I've tried to modify /syslinux/syslinux.cfg as append initrd=/bzroot root=UUID=5befa670-01 append initrd=/bzroot root=/dev/sda1 append initrd=/bzroot LABEL=UNRAIDNothing works! Any idea why the USB device won't boot to the hardware that used to work?