Why is my iPod showing 25gb's instead of 60gb's?

Why is my iPod showing 25gb's instead of 60gb's?
Recently reset the 4th generation A1099 iPod because of issues being frozen. Upgraded the iTunes, and it reset the iPod according to the online instructions step by step. When all was completed, the iPod info (about) showed 25gb's capacity and 25gb's Total...This iPod is actually 60gb's Total not 25gb's. Why is this and if I missed something like formatting OR Did this reset cause this info because of it Partioning without me knowing it?

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