Toshiba is developing technologies which will enable future generations of the iPod Classic to boost capacity to 240GB.

The company recently introduced a 160GB 1.8-inch drive which is now available in this model. This is actually two 80GB platters, twinned together inside the iPod.

Now the company is upping the ante, revealing plans to boost maximum capacity in its 1.8-inch drives to 120GB; two such drives could be combined to offer iPods with 240GB capacity.

The company has developed a prototype 120GB drive which improved on the perpendicular magnetic recording technology used in the current generation of drives.

Toshiba plans to mass produce the drives in 2009.