"no bootable device" - insert boot disk and press any key
If you can get Lion to boot you can go to the Startup Disk in System Preferences and select the internal disk. Maybe it in Recovery Mode if it won’t boot.
https://support.apple.com/en-us/HT202796
Basically does this under the hood.
To bless a volume with only macOS or Darwin, and create the BootX and boot.efi files as needed:
bless --folder &quot;/Volumes/Mac OS X/System/Library/CoreServices&quot; --bootinfo --bootefi