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-rw-r--r--IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/Ata.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/Ata.c b/IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/Ata.c
index c22f7a3b30..7d92065b1c 100644
--- a/IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/Ata.c
+++ b/IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/Ata.c
@@ -2563,7 +2563,8 @@ AtaEnableLongPhysicalSector (
//
if ((AtaIdentifyData->alignment_logic_in_phy_blocks & 0xc000) == 0x4000) {
IdeDev->BlkIo.Media->LowestAlignedLba =
- (EFI_LBA) (AtaIdentifyData->alignment_logic_in_phy_blocks & 0x3fff);
+ (EFI_LBA) (IdeDev->BlkIo.Media->LogicalBlocksPerPhysicalBlock - (AtaIdentifyData->alignment_logic_in_phy_blocks & 0x3fff)) %
+ IdeDev->BlkIo.Media->LogicalBlocksPerPhysicalBlock;
}
}
//