- (EFI_LBA) (IdeDev->BlkIo.Media->LogicalBlocksPerPhysicalBlock - (AtaIdentifyData->alignment_logic_in_phy_blocks & 0x3fff)) %\r
- IdeDev->BlkIo.Media->LogicalBlocksPerPhysicalBlock;\r
+ (EFI_LBA) ((IdeDev->BlkIo.Media->LogicalBlocksPerPhysicalBlock - ((UINT32)AtaIdentifyData->alignment_logic_in_phy_blocks & 0x3fff)) %\r
+ IdeDev->BlkIo.Media->LogicalBlocksPerPhysicalBlock);\r