diff --git a/bootstrapvz/base/fs/partitionmaps/abstract.py b/bootstrapvz/base/fs/partitionmaps/abstract.py
index d1e08ec..15cfb91 100644
--- a/bootstrapvz/base/fs/partitionmaps/abstract.py
+++ b/bootstrapvz/base/fs/partitionmaps/abstract.py
@@ -38,7 +38,7 @@ class AbstractPartitionMap(FSMProxy):
 		"""Returns the total size the partitions occupy
 
 		:return: The size of all partitions
-		:rtype: Bytes
+		:rtype: Sectors
 		"""
 		# We just need the endpoint of the last partition
 		return self.partitions[-1].get_end()
diff --git a/bootstrapvz/base/fs/partitions/abstract.py b/bootstrapvz/base/fs/partitions/abstract.py
index 038e393..10e66e4 100644
--- a/bootstrapvz/base/fs/partitions/abstract.py
+++ b/bootstrapvz/base/fs/partitions/abstract.py
@@ -53,7 +53,7 @@ class AbstractPartition(FSMProxy):
 		"""Gets the end of the partition
 
 		:return: The end of the partition
-		:rtype: Bytes
+		:rtype: Sectors
 		"""
 		return self.get_start() + self.size
 
diff --git a/bootstrapvz/base/fs/partitions/base.py b/bootstrapvz/base/fs/partitions/base.py
index 019218c..23af1b8 100644
--- a/bootstrapvz/base/fs/partitions/base.py
+++ b/bootstrapvz/base/fs/partitions/base.py
@@ -59,7 +59,7 @@ class BasePartition(AbstractPartition):
 		"""Gets the starting byte of this partition
 
 		:return: The starting byte of this partition
-		:rtype: Bytes
+		:rtype: Sectors
 		"""
 		if self.previous is None:
 			# If there is no previous partition, this partition begins at the offset
diff --git a/bootstrapvz/base/fs/partitions/single.py b/bootstrapvz/base/fs/partitions/single.py
index 80683bc..e890493 100644
--- a/bootstrapvz/base/fs/partitions/single.py
+++ b/bootstrapvz/base/fs/partitions/single.py
@@ -9,8 +9,8 @@ class SinglePartition(AbstractPartition):
 		"""Gets the starting byte of this partition
 
 		:return: The starting byte of this partition
-		:rtype: Bytes
+		:rtype: Sectors
 		"""
-		from bootstrapvz.common.bytes import Bytes
+		from bootstrapvz.common.sectors import Sectors
 		# On an unpartitioned volume there is no offset and no previous partition
-		return Bytes(0)
+		return Sectors(0, self.size.sector_size)