Formating HDD

[momo1]

Hello,
i used my portable toshiba external HD on windows than with mac it frooz than used magic partition to recover the data but than i cannot formate it to reuse it? how can i formate it?

 

[PhilFrisbie]

How are you formatting it and what error are you getting?

 

[HugoStiglitz]

you need to use disk utility in system preferences.

 

[momo1]

How are you formatting it and what error are you getting?

on the mac it can read only but no formatting option, while on windows vista you can see it in safely remove hardware but in my computer nothing showing at all.