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[bug #46716] Protective MBR partition is not marked as bootable
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From: |
Alexander E. Patrakov |
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Subject: |
[bug #46716] Protective MBR partition is not marked as bootable |
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Date: |
Sat, 19 Dec 2015 12:54:48 +0000 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:42.0) Gecko/20100101 Firefox/42.0 |
Follow-up Comment #2, bug #46716 (project grub):
OK, Tiano Core validates the protective partition as follows:
//
// Verify that the Protective MBR is valid
//
for (Index = 0; Index < MAX_MBR_PARTITIONS; Index++) {
if (ProtectiveMbr->Partition[Index].BootIndicator == 0x00 &&
ProtectiveMbr->Partition[Index].OSIndicator == PMBR_GPT_PARTITION &&
UNPACK_UINT32 (ProtectiveMbr->Partition[Index].StartingLBA) == 1
) {
break;
}
}
if (Index == MAX_MBR_PARTITIONS) {
goto Done; // i.e. not valid
}
So here is an alternative suggestion: don't mark the protective partition,
create another dummy MBR partition of type 0x00, mark it as bootable.
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