> sudo dd if=/dev/sdj bs=1M count=1 | hd

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  ab a7 58 32 00 00 00 fe  |..........X2....|
000001c0  ff ff ee fe ff ff 01 00  00 00 05 2c 01 00 00 cb  |...........,....|
000001d0  08 04 07 fe ff ff 00 2d  01 00 00 ea 36 3a 00 00  |.......-....6:..|
000001e0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
000001f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 55 aa  |..............U.|
00000200  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00001000  45 46 49 20 50 41 52 54  00 00 01 00 5c 00 00 00  |EFI PART....\...|
00001010  df f0 03 ef 00 00 00 00  01 00 00 00 00 00 00 00  |................|
00001020  d5 17 38 3a 00 00 00 00  06 00 00 00 00 00 00 00  |..8:............|
00001030  d0 17 38 3a 00 00 00 00  d1 59 b6 4e 4e 2d f3 4a  |..8:.....Y.NN-.J|
00001040  bb 9f ff be 88 a7 52 b0  02 00 00 00 00 00 00 00  |......R.........|
00001050  80 00 00 00 80 00 00 00  a1 9f 53 d1 00 00 00 00  |..........S.....|
00001060  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00002000  28 73 2a c1 1f f8 d2 11  ba 4b 00 a0 c9 3e c9 3b  |(s*......K...>.;|
00002010  6b 52 a0 0b 5f 93 68 44  8e 66 f1 82 d4 2a 3a 44  |kR.._.hD.f...*:D|
00002020  06 00 00 00 00 00 00 00  05 2c 01 00 00 00 00 00  |.........,......|
00002030  00 00 00 00 00 00 00 00  45 00 46 00 49 00 20 00  |........E.F.I. .|
00002040  53 00 79 00 73 00 74 00  65 00 6d 00 20 00 50 00  |S.y.s.t.e.m. .P.|
00002050  61 00 72 00 74 00 69 00  74 00 69 00 6f 00 6e 00  |a.r.t.i.t.i.o.n.|
00002060  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00002080  a2 a0 d0 eb e5 b9 33 44  87 c0 68 b6 b7 26 99 c7  |......3D..h..&..|
00002090  a9 1a a1 e8 df 6c 63 40  a2 b7 4a f1 b0 42 c4 87  |.....lc@..J..B..|
000020a0  00 2d 01 00 00 00 00 00  ff 16 38 3a 00 00 00 00  |.-........8:....|
000020b0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00006000  eb 58 90 42 53 44 20 20  34 2e 34 00 10 01 20 00  |.X.BSD  4.4... .|
00006010  02 00 00 00 00 f0 00 00  20 00 10 00 00 00 00 00  |........ .......|
00006020  00 2c 01 00 4b 00 00 00  00 00 00 00 02 00 00 00  |.,..K...........|
00006030  01 00 06 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00006040  00 00 29 ed 17 66 5f 45  46 49 20 20 20 20 20 20  |..)..f_EFI      |
00006050  20 20 46 41 54 33 32 20  20 20 fa 31 c0 8e d0 bc  |  FAT32   .1....|
00006060  00 7c fb 8e d8 e8 00 00  5e 83 c6 19 bb 07 00 fc  |.|......^.......|
00006070  ac 84 c0 74 06 b4 0e cd  10 eb f5 30 e4 cd 16 cd  |...t.......0....|
00006080  19 0d 0a 4e 6f 6e 2d 73  79 73 74 65 6d 20 64 69  |...Non-system di|
00006090  73 6b 0d 0a 50 72 65 73  73 20 61 6e 79 20 6b 65  |sk..Press any ke|
000060a0  79 20 74 6f 20 72 65 62  6f 6f 74 0d 0a 00 00 00  |y to reboot.....|
000060b0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000061f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 55 aa  |..............U.|
00006200  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00007000  52 52 61 41 00 00 00 00  00 00 00 00 00 00 00 00  |RRaA............|
00007010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000071e0  00 00 00 00 72 72 41 61  49 2b 01 00 03 00 00 00  |....rrAaI+......|
000071f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 55 aa  |..............U.|
00007200  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
0000c000  eb 58 90 42 53 44 20 20  34 2e 34 00 10 01 20 00  |.X.BSD  4.4... .|
0000c010  02 00 00 00 00 f0 00 00  20 00 10 00 00 00 00 00  |........ .......|
0000c020  00 2c 01 00 4b 00 00 00  00 00 00 00 02 00 00 00  |.,..K...........|
0000c030  01 00 06 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
0000c040  00 00 29 ed 17 66 5f 45  46 49 20 20 20 20 20 20  |..)..f_EFI      |
0000c050  20 20 46 41 54 33 32 20  20 20 fa 31 c0 8e d0 bc  |  FAT32   .1....|
0000c060  00 7c fb 8e d8 e8 00 00  5e 83 c6 19 bb 07 00 fc  |.|......^.......|
0000c070  ac 84 c0 74 06 b4 0e cd  10 eb f5 30 e4 cd 16 cd  |...t.......0....|
0000c080  19 0d 0a 4e 6f 6e 2d 73  79 73 74 65 6d 20 64 69  |...Non-system di|
0000c090  73 6b 0d 0a 50 72 65 73  73 20 61 6e 79 20 6b 65  |sk..Press any ke|
0000c0a0  79 20 74 6f 20 72 65 62  6f 6f 74 0d 0a 00 00 00  |y to reboot.....|
0000c0b0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
0000c1f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 55 aa  |..............U.|
0000c200  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
0000d000  52 52 61 41 00 00 00 00  00 00 00 00 00 00 00 00  |RRaA............|
0000d010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
0000d1e0  00 00 00 00 72 72 41 61  49 2b 01 00 03 00 00 00  |....rrAaI+......|
0000d1f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 55 aa  |..............U.|
0000d200  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00026000  f0 ff ff 0f ff ff ff 0f  ff ff ff 0f 00 00 00 00  |................|
00026010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00071000  f0 ff ff 0f ff ff ff 0f  ff ff ff 0f 00 00 00 00  |................|
00071010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000bc000  45 46 49 20 20 20 20 20  20 20 20 28 00 00 00 00  |EFI        (....|
000bc010  00 00 00 00 00 00 2a 82  02 41 00 00 00 00 00 00  |......*..A......|
000bc020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.00650694 s, 161 MB/s
00100000