An interlaced even and odd mapping maps between a logical address space
and a physical address space. In one embodiment, an interlaced even and
odd mapping scheme provides for converting between a target logical block
address (LBA) and a target physical disc sector or cylinder head sector
(CHS). In other embodiments, the mapping may be used in any application
wherein address translation is desired between address spaces. For
example, the mapping may be used to convert between a target logical
address space and a target physical address space in a digital computer
environment that includes a data storage device, such as a disc drive,
for persistent storage. The interlaced even and odd mapping scheme allows
for larger physical sector sizes on the data storage device than the
logical sector sizes on a host computer.