The ReFS Volume Boot Record differs massively from that of NTFS and FAT. Instead of having a sector's worth of boot information followed by numerous more sectors full of data, like NTFS and FAT, ReFS uses 64 bytes only. We know that ReFS isn't bootable, so this is one reason for such a difference.
While this sector in ReFS does have the OEM ID like the other two, it also has something within it called "FSRS".
FSRS stands for File System Recognition Structure, which having done research on it, appears to allow operating systems to recognise the structure, thus being able to determine that the file system in use (ReFS) is a valid file system.
|
Type |
Offset |
Length |
Contents |
Description |
|
Jmp |
0x00 |
3 bytes |
00 00 00 |
Jump instruction |
|
FsName |
0x03 |
4 bytes |
53 65 46 53 |
File system name |
|
MustBeZero |
0x07 |
9 bytes |
00 00 00 00 00 00 00 00 00 |
Reserved space containing all zeros |
|
Identifier |
0x10 |
4 bytes |
46 53 52 53 |
Structure identifier. Little endian. |
|
Length |
0x14 |
2 bytes |
00 02 |
The number of bytes in the structure |
|
Checksum |
0x16 |
2 bytes |
33 C2 |
|
Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E
0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
000100000 00 00 00 52 65 46 53 00 00 00 00
00 00 00 00 00 46 53 52 53 00 02 33 C2 00 00 9E 00 00 00 00 00 ...ReFS.........FSRS..3Â..ž.....
000100020 00 02 00 00 80 00 00 00
01 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 1C 55 C4 56 55 C4 34 ....€.....................UÄVUÄ4
File System Recognition Structure - US Patent Office, Patent No.: US8200895 B2 http://www.google.co.uk/patents/US8200895
File System Recognition - https://msdn.microsoft.com/en-gb/library/windows/desktop/dd442652(v=vs.85).aspx
FILE_SYSTEM_RECOGNITION_STRUCTURE - https://msdn.microsoft.com/en-us/library/windows/desktop/dd442654(v=vs.85).aspx
Obtaining File System Recognition Information - https://msdn.microsoft.com/en-us/library/windows/desktop/dd442656(v=vs.85).aspx
Computing a File System Recognition Checksum - https://msdn.microsoft.com/en-us/library/windows/desktop/dd442649(v=vs.85).aspx
