I just upgraded my hard disk to 1 TB which cost less than RM200. Everybody needs bigger HD since most of us become photographers either using DSLR or just camera phone.
What you need to do is:
- Connect your new HD as secondary HD.
- Use clone software (which freely available) and clone old HD to new HD
- Then change cable to make new HD as primary HD
- Then use partition software to adjust the partition (if your HD have partition)
Cloning/copying 400GB data took more than 3 hours
I just used the software from http://www.easeus.com