$ sudo hexdump -s1 -n512 -C /dev/nvme0n1
00000001  63 90 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |c...............|
00000011  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000051  00 00 00 00 00 00 00 00  00 00 80 00 10 a5 0b 00  |................|
00000061  00 00 00 ff fa 90 90 f6  c2 80 74 05 f6 c2 70 74  |..........t...pt|
00000071  02 b2 80 ea 79 7c 00 00  31 c0 8e d8 8e d0 bc 00  |....y|..1.......|
00000081  20 fb a0 64 7c 3c ff 74  02 88 c2 52 bb 17 04 f6  | ..d|<.t...R....|
00000091  07 03 74 06 be 88 7d e8  17 01 be 05 7c b4 41 bb  |..t...}.....|.A.|
000000a1  aa 55 cd 13 5a 52 72 3d  81 fb 55 aa 75 37 83 e1  |.U..ZRr=..U.u7..|
000000b1  01 74 32 31 c0 89 44 04  40 88 44 ff 89 44 02 c7  |.t21..D.@.D..D..|
000000c1  04 10 00 66 8b 1e 5c 7c  66 89 5c 08 66 8b 1e 60  |...f..\|f.\.f..`|
000000d1  7c 66 89 5c 0c c7 44 06  00 70 b4 42 cd 13 72 05  ||f.\..D..p.B..r.|
000000e1  bb 00 70 eb 76 b4 08 cd  13 73 0d 5a 84 d2 0f 83  |..p.v....s.Z....|
000000f1  d0 00 be 93 7d e9 82 00  66 0f b6 c6 88 64 ff 40  |....}...f....d.@|
00000101  66 89 44 04 0f b6 d1 c1  e2 02 88 e8 88 f4 40 89  |f.D...........@.|
00000111  44 08 0f b6 c2 c0 e8 02  66 89 04 66 a1 60 7c 66  |D.......f..f.`|f|
00000121  09 c0 75 4e 66 a1 5c 7c  66 31 d2 66 f7 34 88 d1  |..uNf.\|f1.f.4..|
00000131  31 d2 66 f7 74 04 3b 44  08 7d 37 fe c1 88 c5 30  |1.f.t.;D.}7....0|
00000141  c0 c1 e8 02 08 c1 88 d0  5a 88 c6 bb 00 70 8e c3  |........Z....p..|
00000151  31 db b8 01 02 cd 13 72  1e 8c c3 60 1e b9 00 01  |1......r...`....|
00000161  8e db 31 f6 bf 00 80 8e  c6 fc f3 a5 1f 61 ff 26  |..1..........a.&|
00000171  5a 7c be 8e 7d eb 03 be  9d 7d e8 34 00 be a2 7d  |Z|..}....}.4...}|
00000181  e8 2e 00 cd 18 eb fe 47  52 55 42 20 00 47 65 6f  |.......GRUB .Geo|
00000191  6d 00 48 61 72 64 20 44  69 73 6b 00 52 65 61 64  |m.Hard Disk.Read|
000001a1  00 20 45 72 72 6f 72 0d  0a 00 bb 01 00 b4 0e cd  |. Error.........|
000001b1  10 ac 3c 00 75 f4 c3 83  3d 9f e1 00 00 00 00 01  |..<.u...=.......|
000001c1  00 ee fe ff ff 01 00 00  00 af 12 9e 3b 00 00 00  |............;...|
000001d1  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000001f1  00 00 00 00 00 00 00 00  00 00 00 00 00 55 aa 45  |.............U.E|
00000201