diff --git a/src/add-ons/kernel/bus_managers/ata/ATAChannel.cpp b/src/add-ons/kernel/bus_managers/ata/ATAChannel.cpp
index 578f61914a..33b7f298fe 100644
--- a/src/add-ons/kernel/bus_managers/ata/ATAChannel.cpp
+++ b/src/add-ons/kernel/bus_managers/ata/ATAChannel.cpp
@@ -755,7 +755,7 @@ ATAChannel::ExecutePIOTransfer(ATARequest *request)
 	status_t result = B_OK;
 	size_t *bytesLeft = request->BytesLeft();
 	while (*bytesLeft > 0) {
-		size_t currentLength = MIN(*bytesLeft, ATA_BLOCK_SIZE);
+		size_t currentLength = MIN(*bytesLeft, request->Device()->BlockSize());
 		if (request->IsWrite()) {
 			result = _WritePIOBlock(request, currentLength);
 			if (result != B_OK) {
diff --git a/src/add-ons/kernel/bus_managers/ata/ATADevice.cpp b/src/add-ons/kernel/bus_managers/ata/ATADevice.cpp
index abf3e9f65b..4317c8ec74 100644
--- a/src/add-ons/kernel/bus_managers/ata/ATADevice.cpp
+++ b/src/add-ons/kernel/bus_managers/ata/ATADevice.cpp
@@ -17,9 +17,12 @@ ATADevice::ATADevice(ATAChannel *channel, uint8 index)
 	fUseDMA(channel->UseDMA()),
 	fDMAMode(0),
 	fDMAFailures(0),
+	fTotalSectors(0),
+	fBlockSize(512),
+	fPhysicalBlockSize(512),
+	fBlockOffset(0),
 	fIndex(index),
-	fUse48Bits(false),
-	fTotalSectors(0)
+	fUse48Bits(false)
 {
 	memset(&fInfoBlock, 0, sizeof(fInfoBlock));
 	memset(&fTaskFile, 0, sizeof(fTaskFile));
@@ -170,7 +173,7 @@ ATADevice::ReadCapacity(ATARequest *request)
 	}
 
 	scsi_res_read_capacity data;
-	data.block_size = B_HOST_TO_BENDIAN_INT32(ATA_BLOCK_SIZE);
+	data.block_size = B_HOST_TO_BENDIAN_INT32(fBlockSize);
 
 	uint32 lastBlock = fTotalSectors - 1;
 	data.lba = B_HOST_TO_BENDIAN_INT32(lastBlock);
@@ -305,12 +308,12 @@ status_t
 ATADevice::Select()
 {
 	status_t err = fChannel->SelectDevice(fIndex);
-#if 1	
-    // for debugging only                                                                                                                                                                                                                      
+#if 1
+    // for debugging only
 	if (fChannel->SelectedDevice() != fIndex) {
 		TRACE_ERROR("device %d not selected!\n", fIndex);
-		return B_ERROR;                                                                                                                                                                                                                    
-	}                                                                                                                                                                                                                                          
+		return B_ERROR;
+	}
 #endif
 	return err;
 }
@@ -442,6 +445,23 @@ ATADevice::Configure()
 	}
 
 	fTotalSectors = fInfoBlock.lba_sector_count;
+
+	if (fInfoBlock.word_106_bit_14_one && !fInfoBlock.word_106_bit_15_zero) {
+		// contains a valid block size configuration
+		if (fInfoBlock.logical_sector_not_512_bytes)
+			fBlockSize = fInfoBlock.logical_sector_size * 2;
+
+		if (fInfoBlock.multiple_logical_per_physical_sectors) {
+			fPhysicalBlockSize
+				= fBlockSize << fInfoBlock.logical_sectors_per_physical_sector;
+		} else
+			fPhysicalBlockSize = fBlockSize;
+	}
+	if (fInfoBlock.word_209_bit_14_one && !fInfoBlock.word_209_bit_15_zero) {
+		// contains a valid logical block offset configuration
+		fBlockOffset = fInfoBlock.logical_sector_offset;
+	}
+
 	fTaskFile.lba.mode = ATA_MODE_LBA;
 	fTaskFile.lba.device = fIndex;
 
@@ -540,7 +560,7 @@ ATADevice::ExecuteReadWrite(ATARequest *request, uint64 address,
 	if (!request->UseDMA())
 		request->PrepareSGInfo();
 
-	request->SetBytesLeft(sectorCount * ATA_BLOCK_SIZE);
+	request->SetBytesLeft(sectorCount * fBlockSize);
 	if (_FillTaskFile(request, address) != B_OK) {
 		TRACE_ERROR("failed to setup transfer request\n");
 		if (request->UseDMA())
@@ -615,7 +635,7 @@ ATADevice::_FillTaskFile(ATARequest *request, uint64 address)
 		{ ATA_COMMAND_READ_DMA, ATA_COMMAND_WRITE_DMA }
 	};
 
-	uint32 sectorCount = *request->BytesLeft() / ATA_BLOCK_SIZE;
+	uint32 sectorCount = *request->BytesLeft() / fBlockSize;
 	TRACE("about to transfer %lu sectors\n", sectorCount);
 
 	if (fUse48Bits
diff --git a/src/add-ons/kernel/bus_managers/ata/ATAPrivate.h b/src/add-ons/kernel/bus_managers/ata/ATAPrivate.h
index c59ae4f685..2ff101f124 100644
--- a/src/add-ons/kernel/bus_managers/ata/ATAPrivate.h
+++ b/src/add-ons/kernel/bus_managers/ata/ATAPrivate.h
@@ -1,7 +1,7 @@
 /*
  * Copyright 2009, Michael Lotz, mmlr@mlotz.ch.
  * Copyright 2008, Marcus Overhagen.
- * Copyright 2004-2008, Axel Dörfler, axeld@pinc-software.de.
+ * Copyright 2004-2010, Axel Dörfler, axeld@pinc-software.de.
  * Copyright 2002-2003, Thomas Kurschel.
  *
  * Distributed under the terms of the MIT License.
@@ -9,6 +9,7 @@
 #ifndef ATA_PRIVATE_H
 #define ATA_PRIVATE_H
 
+
 #include <ata_types.h>
 #include <bus/ATA.h>
 #include <bus/SCSI.h>
@@ -25,7 +26,7 @@
 #include "ATAInfoblock.h"
 #include "ATATracing.h"
 
-#define ATA_BLOCK_SIZE				512 /* TODO: retrieve */
+
 #define ATA_MAX_DMA_FAILURES		3
 #define ATA_STANDARD_TIMEOUT		10 * 1000 * 1000
 #define ATA_RELEASE_TIMEOUT			10 * 1000 * 1000
@@ -183,15 +184,17 @@ virtual	status_t					ExecuteIO(ATARequest *request);
 										uint32 *maxBlocks);
 
 		// ATA stuff
-virtual	bool						IsATAPI() { return false; };
+virtual	bool						IsATAPI() const { return false; }
 
-		bool						UseDMA() { return fUseDMA; };
-		bool						Use48Bits() { return fUse48Bits; };
+		bool						UseDMA() const { return fUseDMA; }
+		bool						Use48Bits() const { return fUse48Bits; }
+		size_t						BlockSize() const { return fBlockSize; }
 
 		status_t					Select();
 
-		ata_task_file *				TaskFile() { return &fTaskFile; };
-		ata_reg_mask				RegisterMask() { return fRegisterMask; };
+		ata_task_file *				TaskFile() { return &fTaskFile; }
+		ata_reg_mask				RegisterMask() const
+										{ return fRegisterMask; }
 
 		status_t					SetFeature(int feature);
 		status_t					DisableCommandQueueing();
@@ -219,9 +222,12 @@ private:
 		status_t					_FillTaskFile(ATARequest *request,
 										uint64 address);
 
+		uint64						fTotalSectors;
+		size_t						fBlockSize;
+		size_t						fPhysicalBlockSize;
+		size_t						fBlockOffset;
 		uint8						fIndex;
 		bool						fUse48Bits;
-		uint64						fTotalSectors;
 
 		char						fDebugContext[16];
 };