# prtvtoc /dev/rdsk/c0t1d0s2
* /dev/rdsk/c0t1d0s2 partition map
*
* Dimensions:
* 512 bytes/sector
* 248 sectors/track
* 19 tracks/cylinder
* 4712 sectors/cylinder
* 7508 cylinders
* 7506 accessible cylinders
The number of accessbile cylinders is 7506 , less than 7508.
why ? Where the remaining 2 cylinders go ?