2005-10-11 The Master Boot Record (MBR)
D:\rectos\> dedit
Command: s 0
0000: 31 C0 8E D0 BC 00 7C FB 50 07 50 1F FC BE 1B 7C 1.....|.P.P....|
0010: BF 1B 06 50 57 B9 E5 01 F3 A4 CB BE BE 07 B1 04 ...PW......
0020: 38 2C 7C 09 75 15 83 C6 10 E2 F5 CD 18 8B 14 89 8,|.u......
0030: F5 83 C6 10 49 74 16 38 2C 74 F6 BE 10 07 4E AC ....It.8,t....N.
0040: 3C 00 74 FA BB 07 00 B4 0E CD 10 EB F2 89 46 25 <.t...... F%
0050: 96 8A 46 04 B4 06 3C 0E 74 11 B4 0B 3C 0C 74 05 ..F...<.t...<.t.
0060: 38 E0 75 2B 40 C6 46 25 06 75 24 BB AA 55 50 B4 [email protected]%.u$..UP.
0070: 41 CD 13 58 72 16 81 FB 55 AA 75 10 F6 C1 01 74 A..Xr...U.u....t
0080: 0B 88 C4 88 56 24 C7 06 A1 06 EB 1E 88 66 04 BF ....V$...... f..
0090: 0A 00 B8 01 02 89 E3 31 C9 83 FF 05 7F 03 8B 4E ...... 1...... N
00A0: 25 03 4E 02 CD 13 72 29 BE 46 07 81 3E FE 7D 55 %.N...r).F..>.}U
00B0: AA 74 5A 83 EF 05 7F DA 85 F6 75 83 BE 27 07 EB .tZ...... u..'..
00C0: 8A 98 91 52 99 03 46 08 13 56 0A E8 12 00 5A EB ...R..F..V....Z.
00D0: D5 4F 74 E4 31 C0 CD 13 EB B8 00 00 00 00 00 00 .Ot.1......
00E0: 56 31 F6 56 56 52 50 06 53 51 BE 10 00 56 89 E6 V1.VVRP.SQ...V..
00F0: 50 52 B8 00 42 8A 56 24 CD 13 5A 58 8D 64 10 72 PR..B.V$..ZX.d.r
0100: 0A 40 75 01 42 80 C7 02 E2 F7 F8 5E C3 EB 74 49 [email protected]...... ^..tI
0110: 6E 76 61 6C 69 64 20 70 61 72 74 69 74 69 6F 6E nvalid partition
0120: 20 74 61 62 6C 65 00 45 72 72 6F 72 20 6C 6F 61 table.Error loa
0130: 64 69 6E 67 20 6F 70 65 72 61 74 69 6E 67 20 73 ding operating s
0140: 79 73 74 65 6D 00 4D 69 73 73 69 6E 67 20 6F 70 ystem.Missing op
0150: 65 72 61 74 69 6E 67 20 73 79 73 74 65 6D 00 00 erating system..
0160: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ......
0170: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ......
0180: 00 00 00 89 E7 1E 57 89 EE CB 00 00 00 00 00 00 ...... W......
0190: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ......
01A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ......
01B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 01 ......
01C0: 01 00 04 03 3F A2 3F 00 00 00 35 A0 00 00 00 00 ....?.?...5.....
01D0: 01 A3 BA 03 BF DB 74 A0 00 00 1C 30 02 00 00 00 ...... t....0....
01E0: 81 DC 04 03 FF 3E 90 D0 02 00 74 61 00 00 00 00 .....>....ta....
01F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 AA ...... U.
Command: m
partition 1: ACTIVE --- kind 04 = DOS 16-bit FAT <32M
20 MB or 41013 sectors, first is 63, last is 41075
CHS (0,1,1) to (162,3,63)
partition 2: ------kind BA = **RECTOS**
70 MB or 143388 sectors, first is 41076, last is 184463
CHS (163,0,1) to (731,3,63)
partition 3: ------kind 04 = DOS 16-bit FAT <32M
12 MB or 24948 sectors, first is 184464, last is 209411
CHS (732,0,1) to (830,3,63)
This disc has 63 blocks per track and 4 heads
FILE mbr.asm 200408181644
1 bits 16
2 00000000 31C0 xor ax,ax
3 00000002 8ED0 mov ss,ax
4 00000004 BC007C mov sp, 0x7C00
5 00000007 FB sti
6 00000008 50 push ax
7 00000009 07 pop es
8 0000000A 50 push ax
9 0000000B 1F pop ds
10 0000000C FC cld
..
..
..
2005-10-11 A Boot Sector
Command: s 63
0000: EB 3C 90 4D 53 44 4F 53 35 2E 30 00 02 04 01 00 .<.MSDOS5.0.....
0010: 02 00 02 35 A0 F8 28 00 3F 00 04 00 3F 00 00 00 ...5..(.?...?...
0020: 00 00 00 00 80 00 29 58 7A 65 30 4D 53 2D 44 4F ...... )Xze0MS-DO
0030: 53 5F 36 20 20 20 46 41 54 31 36 20 20 20 FA 33 S_6 FAT16 .3
0040: C0 8E D0 BC 00 7C 16 07 BB 78 00 36 C5 37 1E 56 .....|...x.6.7.V
0050: 16 53 BF 3E 7C B9 0B 00 FC F3 A4 06 1F C6 45 FE .S.>|...... E.
0060: 0F 8B 0E 18 7C 88 4D F9 89 47 02 C7 07 3E 7C FB ....|.M..G...>|.
0070: CD 13 72 79 33 C0 39 06 13 7C 74 08 8B 0E 13 7C ..ry3.9..|t....|
0080: 89 0E 20 7C A0 10 7C F7 26 16 7C 03 06 1C 7C 13 .. |..|.&.|...|.
0090: 16 1E 7C 03 06 0E 7C 83 D2 00 A3 50 7C 89 16 52 ..|...|....P|..R
00A0: 7C A3 49 7C 89 16 4B 7C B8 20 00 F7 26 11 7C 8B |.I|..K|. ..&.|.
00B0: 1E 0B 7C 03 C3 48 F7 F3 01 06 49 7C 83 16 4B 7C ..|..H....I|..K|
00C0: 00 BB 00 05 8B 16 52 7C A1 50 7C E8 92 00 72 1D ...... R|.P|...r.
00D0: B0 01 E8 AC 00 72 16 8B FB B9 0B 00 BE E6 7D F3 .....r...... }.
00E0: A6 75 0A 8D 7F 20 B9 0B 00 F3 A6 74 18 BE 9E 7D .u...... t...}
00F0: E8 5F 00 33 C0 CD 16 5E 1F 8F 04 8F 44 02 CD 19 ._.3...^....D...
0100: 58 58 58 EB E8 8B 47 1A 48 48 8A 1E 0D 7C 32 FF XXX...G.HH...|2.
0110: F7 E3 03 06 49 7C 13 16 4B 7C BB 00 07 B9 03 00 ....I|..K|......
0120: 50 52 51 E8 3A 00 72 D8 B0 01 E8 54 00 59 5A 58 PRQ.:.r....T.YZX
0130: 72 BB 05 01 00 83 D2 00 03 1E 0B 7C E2 E2 8A 2E r...... |....
0140: 15 7C 8A 16 24 7C 8B 1E 49 7C A1 4B 7C EA 00 00 .|..$|..I|.K|...
0150: 70 00 AC 0A C0 74 29 B4 0E BB 07 00 CD 10 EB F2 p....t)......
0160: 3B 16 18 7C 73 19 F7 36 18 7C FE C2 88 16 4F 7C ;..|s..6.|....O|
0170: 33 D2 F7 36 1A 7C 88 16 25 7C A3 4D 7C F8 C3 F9 3..6.|..%|.M|...
0180: C3 B4 02 8B 16 4D 7C B1 06 D2 E6 0A 36 4F 7C 8B .....M|.....6O|.
0190: CA 86 E9 8A 16 24 7C 8A 36 25 7C CD 13 C3 0D 0A .....$|.6%|.....
01A0: 4E 6F 6E 2D 53 79 73 74 65 6D 20 64 69 73 6B 20 Non-System disk
01B0: 6F 72 20 64 69 73 6B 20 65 72 72 6F 72 0D 0A 52 or disk error..R
01C0: 65 70 6C 61 63 65 20 61 6E 64 20 70 72 65 73 73 eplace and press
01D0: 20 61 6E 79 20 6B 65 79 20 77 68 65 6E 20 72 65 any key when re
01E0: 61 64 79 0D 0A 00 49 4F 20 20 20 20 20 20 53 59 ady...IO SY
01F0: 53 4D 53 44 4F 53 20 20 20 53 59 53 00 00 55 AA SMSDOS SYS..U.