 Other vendors worked around the volume size limits imposed by the 16-bit sector entries and arithmetics by increasing the "size" of the sectors the file system dealt with, thereby blowing up dimensions.These so-called "logical sectors" were larger (up to 8192 bytes) than the "physical sector" size (still typically 512 bytes) as expected by the ROM-BIOS INT 13H or the disk drive hardware.The DOS-BIOS or System BIOS would then combine multiple physical sectors into logical sectors for the file system to work with.