Re: Lost partition tables on ide-hd + ahci drive

[Fiona Ebner]

Am 16.02.23 um 15:17 schrieb Mike Maslenkin:
> Does additional comparison make a sense here: check for LBA == 0 and
> then check MBR signature bytes.
> Additionally it’s easy to check buffer_is_zero() result or even print
> FIS contents under these conditions.
> Data looks like a part of guest memory of 64bit Windows.

Just today we got a new dump [0], and it's very similar. Again only 512
bytes and again guest memory?

> febner@enia ~/Downloads % hexdump -C dump.raw 
> 00000000  00 03 22 00 4e 74 46 73  da 4c a3 1c 3b f5 7d 19  |..".NtFs.L..;.}.|
> 00000010  60 a5 a6 d4 0c a8 ff ff  30 15 d9 e6 0c a8 ff ff  |`.......0.......|
> 00000020  5c 00 53 00 6f 00 66 00  74 00 77 00 61 00 72 00  |\.S.o.f.t.w.a.r.|
> 00000030  65 00 44 00 69 00 73 00  74 00 72 00 69 00 62 00  |e.D.i.s.t.r.i.b.|
> 00000040  75 00 74 00 69 00 6f 00  6e 00 5c 00 44 00 6f 00  |u.t.i.o.n.\.D.o.|
> 00000050  77 00 6e 00 6c 00 6f 00  61 00 64 00 5c 00 37 00  |w.n.l.o.a.d.\.7.|
> 00000060  33 00 63 00 36 00 33 00  65 00 32 00 64 00 37 00  |3.c.6.3.e.2.d.7.|
> 00000070  66 00 66 00 38 00 66 00  36 00 35 00 31 00 31 00  |f.f.8.f.6.5.1.1.|
> 00000080  39 00 36 00 63 00 65 00  61 00 31 00 65 00 30 00  |9.6.c.e.a.1.e.0.|
> 00000090  39 00 66 00 66 00 36 00  32 00 30 00 65 00 5c 00  |9.f.f.6.2.0.e.\.|
> 000000a0  69 00 6e 00 73 00 74 00  5c 00 70 00 61 00 63 00  |i.n.s.t.\.p.a.c.|
> 000000b0  6b 00 61 00 67 00 65 00  5f 00 39 00 31 00 37 00  |k.a.g.e._.9.1.7.|
> 000000c0  31 00 5f 00 66 00 6f 00  72 00 5f 00 6b 00 62 00  |1._.f.o.r._.k.b.|
> 000000d0  35 00 30 00 32 00 32 00  38 00 33 00 38 00 7e 00  |5.0.2.2.8.3.8.~.|
> 000000e0  33 00 31 00 62 00 66 00  33 00 38 00 35 00 36 00  |3.1.b.f.3.8.5.6.|
> 000000f0  61 00 64 00 33 00 36 00  34 00 65 00 33 00 35 00  |a.d.3.6.4.e.3.5.|
> 00000100  7e 00 61 00 6d 00 64 00  36 00 34 00 7e 00 7e 00  |~.a.m.d.6.4.~.~.|
> 00000110  31 00 30 00 2e 00 30 00  2e 00 31 00 2e 00 31 00  |1.0...0...1...1.|
> 00000120  33 00 2e 00 63 00 61 00  74 00 1d 08 0d a8 ff ff  |3...c.a.t.......|
> 00000130  13 03 0f 00 4e 74 46 73  ea 4d a3 1c 3b f5 7d 19  |....NtFs.M..;.}.|
> 00000140  90 05 4d 0f 0d a8 ff ff  a0 0c 55 0d 0d a8 ff ff  |..M.......U.....|
> 00000150  43 52 4f 53 4f 46 54 2d  57 49 4e 44 4f 57 53 2d  |CROSOFT-WINDOWS-|
> 00000160  44 2e 2e 2d 57 49 4e 50  52 4f 56 49 44 45 52 53  |D..-WINPROVIDERS|
> 00000170  2d 41 53 53 4f 43 5f 33  31 42 46 33 38 35 36 41  |-ASSOC_31BF3856A|
> 00000180  0c 03 67 00 70 00 73 00  63 00 72 00 69 00 70 00  |..g.p.s.c.r.i.p.|
> 00000190  74 00 2e 00 65 00 78 00  65 00 37 00 36 00 34 00  |t...e.x.e.7.6.4.|
> 000001a0  37 00 62 00 33 00 36 00  30 00 30 00 63 00 64 00  |7.b.3.6.0.0.c.d.|
> 000001b0  65 00 30 00 34 00 31 00  35 00 39 00 35 00 32 00  |e.0.4.1.5.9.5.2.|
> 000001c0  31 00 2e 00 74 00 6d 00  70 00 47 00 50 00 53 00  |1...t.m.p.G.P.S.|
> 000001d0  43 00 52 00 49 00 50 00  54 00 2e 00 45 00 58 00  |C.R.I.P.T...E.X.|
> 000001e0  45 00 37 00 36 00 34 00  37 00 42 00 33 00 36 00  |E.7.6.4.7.B.3.6.|
> 000001f0  30 00 30 00 43 00 44 00  45 00 30 00 34 00 31 00  |0.0.C.D.E.0.4.1.|
> 00000200  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
> *
> 00100000

[0]:
https://forum.proxmox.com/threads/not-a-bootable-disk-vm-ms-server-2016.122849/post-534473