ASUS has made it easy to access and replace the Eee PC 1000HE's 2.5-inch SATA hard drive. All you need to do is grab a mini philip's head screwdriver and a replacement drive, and you can have a larger, faster hard disk or even an SSD.
Before you begin, you'll need to make a backup image of the Eee PC 1000HE's existing hard drive if you plan to keep its preinstalled Windows XP Home operating system. If so, you will want to attach an external backup drive and use a program such as Acronis True Image to create the backup.
When you're ready to swap the old drive out with the new one, ground yourself to protect against static electricity and follow these steps.