It's really a pain to upgrade your OS installed hard drive, because you don't want to reinstall your well running operating system and it needs your Windows ID and key, let alone the long time spent on it. So the best way to move your existing OS to your new and larger hard drive is to clone. Cloning can help to move all your contents on the hard drive completely to your new drive, including the operating system, files, programs and all personal settings.
How to clone OS to a larger hard drive
To clone your OS, you need a system backup tool. Here you can try Wondershare LiveBoot Boot CD, which can help to clone your entire disk or partitions that you need to backup with only 1 click.
Step1. Boot your computer from LiveBoot
Wondershare LiveBoot provides a bootable CD/USB, which gives you a totally pure environment to backup a clean operating system or all drive contents. Insert the CD or plug in the USB to your PC, start your computer and choose to boot from LiveBoot.
Step2. Begin to clone OS
After getting into the Windows, the LiveBoot will be launched automatically. Then go to "Disk Management". Here you can see the "Clone Entire Disk" and "Clone One Partition" on the left side. If you want to clone the whole hard drive content, you can choose "Clone Entire Disk", or you can choose "Clone One Partition" to backup the only partition where your OS installed.
You can directly clone your old drive to your new hard drive if you can connect it to your computer with related connecting devices, or you can clone it to an external disk first, and then clone it back to your hard drive when you've replaced the old one with it. Just take the way convenient for you.
Also, you can choose to image your hard drive with "Disk Backup". It can backup your hard drive content as an image file. Then you can restore it to your new hard drive.