REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2823
The MBR last block value should be sector (512 bytes) numbers. Cc: Hao A Wu <hao.a...@intel.com> Cc: Ray Ni <ray...@intel.com> Cc: Laszlo Ersek <ler...@redhat.com> Signed-off-by: Zhichao Gao <zhichao....@intel.com> --- MdeModulePkg/Universal/Disk/PartitionDxe/Mbr.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/MdeModulePkg/Universal/Disk/PartitionDxe/Mbr.c b/MdeModulePkg/Universal/Disk/PartitionDxe/Mbr.c index dac451a144..aa0b6cadcc 100644 --- a/MdeModulePkg/Universal/Disk/PartitionDxe/Mbr.c +++ b/MdeModulePkg/Universal/Disk/PartitionDxe/Mbr.c @@ -137,12 +137,14 @@ PartitionInstallMbrChildHandles ( UINT32 MediaId; EFI_LBA LastBlock; EFI_PARTITION_INFO_PROTOCOL PartitionInfo; + UINT64 MediaSize; Found = EFI_NOT_FOUND; BlockSize = BlockIo->Media->BlockSize; MediaId = BlockIo->Media->MediaId; - LastBlock = BlockIo->Media->LastBlock; + MediaSize = MultU64x32 (BlockIo->Media->LastBlock + 1, BlockSize); + LastBlock = DivU64x32 (MediaSize, 512) - 1; // // Ensure the block size can hold the MBR -- 2.21.0.windows.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#62186): https://edk2.groups.io/g/devel/message/62186 Mute This Topic: https://groups.io/mt/75369397/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
