https://bugs.winehq.org/show_bug.cgi?id=56805
--- Comment #4 from crashdance22@protonmail.com --- In the prefix folder the file in question is c:\duckstation\bios\scph1001.bin. These lines are relevant:
011c:trace:file:CreateFileW L"\\?\Z:\duckstation\bios\scph1001.bin" GENERIC_READ FILE_SHARE_READ FILE_SHARE_WRITE creation 3 attributes 0x1 011c:trace:file:RtlDosPathNameToNtPathName_U_WithStatus (L"\\?\Z:\duckstation\bios\scph1001.bin",00007FFFFF57AD20,0000000000000000,0000000000000000) 011c:trace:file:NtCreateFile handle=0x7fffff57ad08 access=80100080 name=L"\??\Z:\duckstation\bios\scph1001.bin" objattr=00000042 root=(nil) sec=(nil) io=0x7fffff57ad30 alloc_size=(nil) attr=00000001 sharing=00000003 disp=1 options=00000060 ea=(nil).0x00000000 011c:trace:file:nt_to_unix_file_name_no_root L"duckstation\bios\scph1001.bin" not found in "/home/user/.wine/dosdevices/z:" 011c:warn:file:NtCreateFile L"\??\Z:\duckstation\bios\scph1001.bin" not found (c000003a) 011c:warn:file:CreateFileW Unable to create file L"\\?\Z:\duckstation\bios\scph1001.bin" (status c000003a)