Firmware File System
From Just Solve the File Format Problem
The UEFI Firmware File System is used to describe the layout of data inside a UEFI firmware image.
The magic number (actually a GUID) "d9 54 93 7a 68 04 4a 44 81 ce 0b f6 17 d8 90 df" is located 16 bytes into the file system image; the first 16 bytes are reserved for startup code.
Links
- UEFITool can read and modify FFS images embedded in UEFI firmware.
- FFSv0.9 specification
