1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
"""
Master Boot Record
The first sector on disk, contains the partition table, bootloader, et al.
http://www.win.tue.nl/~aeb/partitions/partition_types-1.html
"""
from construct import *
mbr_format = Struct(
"bootloader_code" / Bytes(446),
"partitions" / Array(4, Struct(
"state" / Enum(Byte,
INACTIVE = 0x00,
ACTIVE = 0x80,
),
"beginning" / BitStruct(
"head" / BitsInteger(8),
"sect" / BitsInteger(6),
"cyl" / BitsInteger(10),
),
"type" / Enum(Byte,
Nothing = 0x00,
FAT12 = 0x01,
XENIX_ROOT = 0x02,
XENIX_USR = 0x03,
FAT16_old = 0x04,
Extended_DOS = 0x05,
FAT16 = 0x06,
NTFS = 0x07,
FAT32 = 0x0B,
FAT32_LBA = 0x0C,
ExtendedWithLBA = 0x0F,
LINUX_SWAP = 0x82,
LINUX_NATIVE = 0x83,
),
"ending" / BitStruct(
"head" / BitsInteger(8),
"sect" / BitsInteger(6),
"cyl" / BitsInteger(10),
),
"sector_offset" / Int32ub, # offset from MBR in sectors
"size" / Int32ub, # in sectors
)),
"signature" / Const(b"\x55\xAA"),
)
|
