Where you save your backup depends on the hardware that you have available and the information that you’re saving on your backup. For the most flexibility, it is recommended that you save your backup on an external hard drive.
However, here is a list of backup destinations supported by Windows Backup:
1. Internal Hard Drive – Another hard drive isn’t the same thing as a partition. You can save your backups on a partition on your drive, but if the drive were to fail, you would lose your backups. You should also never back up files on the same drive that Windows is installed on, because if your computer gets a virus or has a software failure, you might have to reformat the drive and reinstall Windows to recover from the problem and then you would lose your backup data.
2. External Hard Drives – External hard drives can hold lots of information. It is recommended that you use an external hard drive that holds at least 200 gigabytes (GB). The external hard drive needs to be plugged into your computer and available when a backup is scheduled to occur. If you store your hard drive somewhere else for safekeeping, you’ll need to remember to get it out and attach it to your computer before your backup is scheduled.
3. Writeable CDs/DVDs – You can’t save scheduled system image backups on CDs or DVDs.
4. USB Flash Drives – To save a backup on a flash drive, it must be able to hold more than 1 GB. You can’t save a system image on a flash drive.
5. Network Locations – You can only save your backups on a network location on Windows 7 Professional, Windows 7 Ultimate, and Windows 7 Enterprise. You’ll need to provide a user name and password so that Windows Backup can access the network location. Other people who have access to the network location might be able to access your backup. If you create a system image, Windows will only keep the latest version of the system image.
Why you cannot see your destination in the list?
When you choose a destination to save your backup to, the wizard searches your computer and displays a list of all destinations that you can use. If the destination that you want to use doesn’t appear in the list, it could be due to one of the following reasons:
The destination is a tape drive. You can’t save backups to tapes.
The destination is the drive that you’re trying to back up. You can’t back up a disk to itself. For example, you can’t back up the contents of Drive E: to Drive E:.
The destination is a CD-ROM drive or a DVD drive. You can’t use a CD drive or a DVD drive to make a backup; you must use a CD or DVD burner, also known as a CD-R/CD-RW or DVD-R/DVD-RW drive.
The destination isn’t formatted as NTFS, FAT, or Universal Disk Format (UDF) (also called Live File System). Backups can only be saved to disks that are formatted using the NTFS, FAT, or UDF file systems.
The destination is either the drive that Windows is installed on or the system drive (the drive that Windows uses to start your computer—also called the startup drive).
The destination is a recovery partition. This is a special partition created by your computer manufacturer that contains files and tools that you can use to return your computer to the manufacturer’s settings if it stops working correctly.
The destination is locked by BitLocker Drive Encryption. If the drive is encrypted using BitLocker, it must be unlocked before you can store a backup on it.