Here is that string broken down and presented in various useful text formats:
'efi32-srvr.rom'
"efi32-srvr.rom"
It sounds like you want to construct or understand the text string — likely as a filename, variable, or identifier in a firmware/BIOS/UEFI context. efi32-srvr.rom
65 66 69 33 32 2D 73 72 76 72 2E 72 6F 6D Here is that string broken down and presented