Thanks Steve I'll look it up.
Got the Win98 computer up and running, unfortunately no 1.4MB disqette yet. have to raid the cellar...
Switched to the code uploaded by Vortex, edited the output with adresses and read Wikipedia on MBR.
Structure of a master boot record
Address Description Size in bytes
Hex Oct Dec
0000 0000 0 code area 440
(max. 446)
01B8 0670 440 disk signature (optional) 4
01BC 0674 444 Usually nulls; 0x0000 2
01BE 0676 446 Table of primary partitions
(Four 16-byte entries, IBM partition table scheme) 64
01FE 0776 510 55h MBR signature 2
01FF 0777 511 AAh
MBR, total size: 446 + 64 + 2 = 512
Here is the dump can somebody decode the first two or three bytes?
; File C:\Documents and Settings\laskar01\Skrivbord\ReadMBR11\master_boot_record_file.ext opened at 512 bytes
00 db 033h,0C0h,08Eh,0D0h,0BCh,000h,07Ch,08Eh,0C0h,08Eh,0D8h,0BEh,000h,07Ch,0BFh,000h
10 db 006h,0B9h,000h,002h,0FCh,0F3h,0A4h,050h,068h,01Ch,006h,0CBh,0FBh,0B9h,004h,000h
20 db 0BDh,0BEh,007h,080h,07Eh,000h,000h,07Ch,00Bh,00Fh,085h,00Eh,001h,083h,0C5h,010h
30 db 0E2h,0F1h,0CDh,018h,088h,056h,000h,055h,0C6h,046h,011h,005h,0C6h,046h,010h,000h
40 db 0B4h,041h,0BBh,0AAh,055h,0CDh,013h,05Dh,072h,00Fh,081h,0FBh,055h,0AAh,075h,009h
50 db 0F7h,0C1h,001h,000h,074h,003h,0FEh,046h,010h,066h,060h,080h,07Eh,010h,000h,074h
60 db 026h,066h,068h,000h,000h,000h,000h,066h,0FFh,076h,008h,068h,000h,000h,068h,000h
70 db 07Ch,068h,001h,000h,068h,010h,000h,0B4h,042h,08Ah,056h,000h,08Bh,0F4h,0CDh,013h
80 db 09Fh,083h,0C4h,010h,09Eh,0EBh,014h,0B8h,001h,002h,0BBh,000h,07Ch,08Ah,056h,000h
90 db 08Ah,076h,001h,08Ah,04Eh,002h,08Ah,06Eh,003h,0CDh,013h,066h,061h,073h,01Ch,0FEh
A0 db 04Eh,011h,075h,00Ch,080h,07Eh,000h,080h,00Fh,084h,08Ah,000h,0B2h,080h,0EBh,084h
B0 db 055h,032h,0E4h,08Ah,056h,000h,0CDh,013h,05Dh,0EBh,09Eh,081h,03Eh,0FEh,07Dh,055h
C0 db 0AAh,075h,06Eh,0FFh,076h,000h,0E8h,08Dh,000h,075h,017h,0FAh,0B0h,0D1h,0E6h,064h
D0 db 0E8h,083h,000h,0B0h,0DFh,0E6h,060h,0E8h,07Ch,000h,0B0h,0FFh,0E6h,064h,0E8h,075h
E0 db 000h,0FBh,0B8h,000h,0BBh,0CDh,01Ah,066h,023h,0C0h,075h,03Bh,066h,081h,0FBh,054h
F0 db 043h,050h,041h,075h,032h,081h,0F9h,002h,001h,072h,02Ch,066h,068h,007h,0BBh,000h
100db 000h,066h,068h,000h,002h,000h,000h,066h,068h,008h,000h,000h,000h,066h,053h,066h
110db 053h,066h,055h,066h,068h,000h,000h,000h,000h,066h,068h,000h,07Ch,000h,000h,066h
120db 061h,068h,000h,000h,007h,0CDh,01Ah,05Ah,032h,0F6h,0EAh,000h,07Ch,000h,000h,0CDh
130db 018h,0A0h,0B7h,007h,0EBh,008h,0A0h,0B6h,007h,0EBh,003h,0A0h,0B5h,007h,032h,0E4h
140db 005h,000h,007h,08Bh,0F0h,0ACh,03Ch,000h,074h,009h,0BBh,007h,000h,0B4h,00Eh,0CDh
150db 010h,0EBh,0F2h,0F4h,0EBh,0FDh,02Bh,0C9h,0E4h,064h,0EBh,000h,024h,002h,0E0h,0F8h
160db 024h,002h,0C3h,049h,06Eh,076h,061h,06Ch,069h,064h,020h,070h,061h,072h,074h,069h
170db 074h,069h,06Fh,06Eh,020h,074h,061h,062h,06Ch,065h,000h,045h,072h,072h,06Fh,072h
180db 020h,06Ch,06Fh,061h,064h,069h,06Eh,067h,020h,06Fh,070h,065h,072h,061h,074h,069h
190db 06Eh,067h,020h,073h,079h,073h,074h,065h,06Dh,000h,04Dh,069h,073h,073h,069h,06Eh
1A0db 067h,020h,06Fh,070h,065h,072h,061h,074h,069h,06Eh,067h,020h,073h,079h,073h,074h
1B0db 065h,06Dh,000h,000h,000h,063h,07Bh,09Ah,036h,067h,036h,067h,000h,000h,080h,020h
1C0db 021h,000h,007h,0FEh,0FFh,0FFh,000h,008h,000h,000h,000h,068h,0FCh,006h,000h,000h
1D0db 000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h
1E0db 000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h
1F0db 000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,000h,055h,0AAh
Kindest regards,
Lasse