我需要你的帮助！我想从分区表中获取哈希值，以便破解 LUKS1 分区以某种方式更改的旧密码/密码。
我错误地使用了 dd 命令。当然，我忘记了备份的存在是有原因的。
我创建了空txt文件emptyFileHash.img，并通过错误的命令顺序用空数据覆盖了分区表的开头
错误的命令
dd if=emptyFileHash.img of=/dev/sda1 bs=512 count=4097
代替
dd if=/dev/sda1 of=emptyFileHash.img bs=512 count=4097
我记忆中的结果（可能不准确）
0+条记录
0+条记录输出
复制 2097664 字节（2.1 MB、2.0 MiB）、0.0674719 秒、31.1 MB/秒
问题 - ddrescue
如何使用解救具有我覆盖的特定块的分区上的恢复选项？
只读回这部分数据以恢复分区而不是整个 500GB 磁盘的方法是什么？
细节
fdisk -l
Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: ***NA***
Device Start End Sectors Size Type
/dev/sda1 2048 976773119 976771072 465.8G unknown
当前十六进制数据
dd if=/dev/sda1 bs=512 count=10 |hexdump -C
10+0 records in
10+0 records out
5120 bytes (5.1 kB, 5.0 KiB) copied, 0.000738207 s, 6.9 MB/s
00000000 0a 0a 4b 53 ba be 00 01 61 65 73 00 00 00 00 00 |..KS....aes.....|
00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000020 00 00 00 00 00 00 00 00 78 74 73 2d 70 6c 61 69 |........xts-plai|
00000030 6e 36 34 00 00 00 00 00 00 00 00 00 00 00 00 00 |n64.............|
00000040 00 00 00 00 00 00 00 00 73 68 61 32 35 36 00 00 |........sha256..|
00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000060 00 00 00 00 00 00 00 00 00 00 10 00 00 00 00 40 |...............@|
00000070 d4 83 26 cc ff b5 fd b2 84 7d 5d f9 d9 4d 14 32 |..&......}]..M.2|
00000080 df 47 0d c3 e5 48 3b 76 01 85 29 45 ca d9 85 fe |.G...H;v..)E....|
00000090 bc 51 d6 7c e0 5d c3 5d 2b 94 db fb b5 20 3b 0a |.Q.|.].]+.... ;.|
000000a0 39 e1 07 73 00 00 de 9b 61 38 66 63 35 31 64 33 |9..s....a8fc51d3|
000000b0 2d 33 63 37 64 2d 34 34 64 38 2d 61 38 30 65 2d |-3c7d-44d8-a80e-|
000000c0 61 38 33 63 64 31 61 35 37 62 62 33 00 00 00 00 |a83cd1a57bb3....|
000000d0 00 ac 71 f3 00 0d 17 e0 5f d6 d2 31 f1 5d e6 0b |..q....._..1.]..|
000000e0 4b 96 27 07 51 25 96 b1 94 62 61 aa d2 85 6e 99 |K.'.Q%...ba...n.|
000000f0 c6 d0 06 7c 54 8f 74 6f 00 00 00 08 00 00 0f a0 |...|T.to........|
00000100 00 00 de ad 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000110 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000120 00 00 00 00 00 00 00 00 00 00 02 00 00 00 0f a0 |................|
00000130 00 00 de ad 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000140 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000150 00 00 00 00 00 00 00 00 00 00 03 f8 00 00 0f a0 |................|
00000160 00 00 de ad 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000170 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000180 00 00 00 00 00 00 00 00 00 00 05 f0 00 00 0f a0 |................|
00000190 00 00 de ad 00 00 00 00 00 00 00 00 00 00 00 00 |................|
000001a0 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 07 e8 00 00 0f a0 |................|
000001c0 00 00 de ad 00 00 00 00 00 00 00 00 00 00 00 00 |................|
000001d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
000001e0 00 00 00 00 00 00 00 00 00 00 09 e0 00 00 0f a0 |................|
000001f0 00 00 de ad 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000200 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000210 00 00 00 00 00 00 00 00 00 00 0b d8 00 00 0f a0 |................|
00000220 00 00 de ad 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000230 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000240 00 00 00 00 00 00 00 00 00 00 0d d0 00 00 0f a0 |................|
00000250 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00001000 6e 58 3d bd 51 ab da e1 0e b4 5f e2 7d 6d 5e 9e |nX=.Q....._.}m^.|
00001010 03 53 37 e6 57 00 a8 34 5d 89 fb 6a 8e d4 2f 9f |.S7.W..4]..j../.|
00001020 66 73 61 99 c3 23 5f 02 c9 e0 f1 ab 31 44 83 a4 |fsa..#_.....1D..|
00001030 cf a0 3d 5a c8 80 8f 27 d9 cd 4d 1e 8e 99 7b 8c |..=Z...'..M...{.|
00001040 fc d7 75 c1 1d 91 18 5f ef ac 29 8b a1 a1 99 08 |..u...._..).....|
00001050 d8 d1 df 17 11 71 a6 24 71 43 e7 29 6d f0 da 36 |.....q.$qC.)m..6|
00001060 fb 02 c7 c9 67 46 b9 28 50 62 1c 93 81 2a 2d 68 |....gF.(Pb...*-h|