By enabling drive mirroring in Windows 7, you’ll always have an up-to-date copy of your data.
Seethis Wikipedia pagefor more information.
You will need at least one empty disk to set up disk mirroring.
tap on the Create and format hard disk partitions entry that shows up.
Note: The disk that you will use to mirror the existing disk must be unallocated.
If it is not, then right-punch it and select Delete Volume… to mark it as unallocated.
This will destroy any data on that drive.
Right-choose the existing disk that you want to mirror.
You will be warned that this process will change the existing disk from basic to dynamic.
Note that this process will not delete any data on the disk!
kick off the Disk Management window as described above.
check that that the drives are unallocated.
press the drives you want to hold the mirrored data and click Add.
Note that you could add any number of drives.
Assign it a drive letter that makes sense, and then click Next.
Click Finish to start formatting the drives.
You will be warned that the new drives will be converted to dynamic disks.
And that’s it!
You now have two mirrored drives.
Of course, even with drive mirroring, we advocate regular backups to external drives or online backup services.
