Please follow these steps for getting your drive ready to use. Skip any that are not applicable to your situation.
You must install Windows or MacOS (the operating system). Either use the link above to perform a copy from your old drive to your new one, or insert your Windows or Mac installation CD/DVD, reboot, and follow the installation instructions that will appear.
Once the operating system is installed, you will need to install any programs that you want to use, such as productivity suites, graphics software, or games.
The only software programs that Seagate has designed to work with laptop drives are:
Seatools for Windows - For testing drives and determining whether a drive needs to be replaced.
Seatools for DOS - For testing drives like Seatools for Windows For limiting and resetting the capacity to maximum (if necessary). For erasing a drive to start over again.
DiscWizard and MaxBlast - For copying (cloning, imaging) the entirety of one drive or one partition to another
How To Partition Your Drive
Laptop computers often have just one hard drive - the boot drive. The only safe way to change the partitions on a boot drive is to reinstall Windows or MacOS, which can be time-consuming and difficult.
However, your laptop computer might have a second hard drive, or you might obtain one.
Use an external or second internal laptop hard drive to increase your storage space. Or, if you have an extra drive lying around, get a usually-inexpensive external USB or FireWire enclosure (not sold by Seagate), install the hard drive inside it, and then use the drive as an external drive. You can partition that drive all you like. (Remember, the partitioning process is data-destructive to the drive being partitioned so be sure you don't have any important data on it before doing this.)
Reinstall Windows or MacOS, and partition the drive during that process. This process is data-destructive.