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Relax Protective MBR checks.

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git-svn-id: svn://kolibrios.org@7546 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Ivan Baravy 2018-11-09 21:18:56 +00:00
parent 490fec6653
commit c780425437
1 changed files with 6 additions and 10 deletions
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16
kernel/trunk/blkdev/disk.inc
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@ -1012,8 +1012,6 @@ endp
is_protective_mbr:
push ecx edi
xor eax, eax
; cmp [ecx-6], eax
; jnz .exit
cmp [ecx-2], ax
jnz .exit
; Partition record 0 has specific fields
@ -1023,15 +1021,13 @@ is_protective_mbr:
jnz .exit
cmp dword[ecx+8], 1
jnz .exit
cmp dword[esi+DISK.MediaInfo.Capacity+4], eax
mov edi, 0xFFFFFFFF
jnz @f
mov edi, dword[esi+DISK.MediaInfo.Capacity+0]
dec edi
@@:
cmp dword[ecx+12], edi
mov edi, -1
cmp [ecx+12], edi
jz @f
add edi, dword[esi+DISK.MediaInfo.Capacity+0]
cmp [ecx+12], edi
jnz .exit
@@:
; Check that partition records 1-3 are filled with zero
lea edi, [ecx+16]
mov ecx, 16*3/2 ; 3 partitions