Toshiba is the only brand manufacturer that does not provide any HD utility to general public.
Your best recourse is to use Debug command.
http://tinyurl.com/pa1x (click on Erase all HDD Information).
I use this so often, I created a batch file (Delpart.bat) so all I have to do is to type Delpart.
Originally I got this from Dell website (Document Number TT1011054 for more info). You may also use Clean1K.exe from Dell Resource CD. You need a Service Tag or Service Code to access Dell Knowledge Base. Or search from Google with keyword clean1k. From time to time, it is available.
Once you erased the HD, you may then use Fdisk to create partition(s) or use XP installation process to create and format the partition(s).
If you need more information or help, please post a comment.
(Delpart.bat) so all I have to do is to type Delpart.
Originally I got this from Dell website (Document Number TT1011054). You may also use Clean1K.exe from Dell Resource CD. You need a Service Tag or Service Code to access Dell Knowledge Base. Or search from Google with keyword clean1k. From time to time, it is available.
Once you erased the HD, you may then use Fdisk to create partition(s) or use XP installation process to create and format the partition(s).
If you need more information or help, please post a comment.