root@miku:~/moje/repos/rockbox/rbutil/mkimxboot# hexdump -C /dev/sdb | head -n 30
00000000  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000001b0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 80 11  |................|
000001c0  0f 07 01 00 c1 e9 00 ac  01 00 00 14 eb 00 00 10  |................|
000001d0  21 00 53 87 06 06 00 04  00 00 00 88 01 00 00 87  |!.S.............|
000001e0  07 06 01 c9 0a 06 00 8c  01 00 00 10 00 00 00 c9  |................|
000001f0  0b 06 01 11 0e 07 00 9c  01 00 00 10 00 00 55 aa  |..............U.|
00000200  53 54 4d 50 00 00 00 00  00 00 00 00 00 00 00 00  |STMP............|
00000210  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00080800  38 26 5c 0f 76 8b bd 37  d9 6c 8b 87 22 5f 53 7f  |8&\.v..7.l.."_S.|
00080810  53 eb c4 21 53 54 4d 50  01 01 00 01 1d 0c 21 00  |S..!STMP......!.|
00080820  0c 00 00 00 00 00 00 00  01 00 0a 00 06 00 04 00  |................|
00080830  01 00 2e 47 73 67 74 6c  00 5f 9b 8d 28 49 01 00  |...Gsgtl._..(I..|
00080840  00 02 00 00 00 38 00 00  00 06 00 00 00 02 00 00  |.....8..........|
00080850  00 38 00 00 00 06 00 00  00 00 2d 8d 3f b5 71 36  |.8........-.?.q6|
00080860  00 00 00 00 0d 00 00 00  93 39 00 00 01 00 00 00  |.........9......|
00080870  74 73 6f 68 a1 39 00 00  f3 b1 00 00 01 00 00 00  |tsoh.9..........|
00080880  79 61 6c 70 95 eb 00 00  57 93 05 00 01 00 00 00  |yalp....W.......|
00080890  63 72 73 72 00 7f 06 00  1b 8d 1a 00 02 00 00 00  |crsr............|
000808a0  fc 9b d1 10 96 7a 43 d2  8c 05 30 3f c8 e1 1a a2  |.....zC...0?....|
000808b0  6f 5a 04 be 56 50 e4 ce  bf c4 c9 77 7e 90 47 fc  |oZ..VP.....w~.G.|
000808c0  7a ad fb 0f f4 45 4e 64  96 00 fe 86 38 22 b0 86  |z....ENd....8"..|
000808d0  b0 58 ee c6 d7 e4 45 bc  19 ee 36 8a eb 60 82 25  |.X....E...6..`.%|
000808e0  13 33 e7 b1 f2 06 54 1c  f4 d1 d5 1d 3e 50 33 e0  |.3....T.....>P3.|
000808f0  d9 74 d5 87 05 85 4f 66  20 9c 0c 25 cb f3 72 cb  |.t....Of ..%..r.|
00080900  87 ba 84 e3 47 96 dd 44  87 12 74 c3 17 15 26 c3  |....G..D..t...&.|
00080910  d7 66 a1 c6 44 e1 88 67  b4 22 ae 59 68 bd 84 5b  |.f..D..g.".Yh..[|
00080920  3b 35 2e 3a 6a 9d b6 05  84 01 5e ac 8d d5 89 db  |;5.:j.....^.....|
00080930  e3 c2 7e 5b 55 25 89 01  4f 0e 8d 20 79 8d 49 03  |..~[U%..O.. y.I.|