VHD in Windows 7. This little known feature that is now built-in to Windows is what finally persuaded me to switch back whole-hog from Ubuntu to Windows. Windows 7 has made data backup and restore a dream compared to earlier versions. There is no need to clutter up your PC with heavy backup add-ons, free or otherwise. Because the included system backup tool is so good, I merely use the lightweight and free MS Synctoy for data backup. I found that rather than make a separate image and data backup, all I need is to make a system image file on an external USB drive. It’s very quick–it took me less than two hours to make the initial system image of my 500 gig notebook hard drive. Windows 7 backup images are compressed, so the resulting image file is only around 250 gigs–but will expand fully when restored to my system drive.
Your data can be backed up separately with Windows Backup and Restore tool, but there is a little known feature of that single system image that makes the time- and space-consuming dual system and data backups uneccesary.You can mount the system image, which is seen as a .VHD (Virtual Hard Drive) file in a subfolder of the WindowsImageBackup on your external drive. In the Computer Management console (which must run as administrator for this to work), if you right click on Disk Management in the left pane, you can mount that .VHD image as an extra hard drive. You now are capable of copying anything to and from that VHD duplicate of your system drive, provided you don’t make it read-only when mounting it. If you Dig deeply enough into the MS Technet site, you can find many scattered details about .VHD files.
I schedule a Windows Image backup once a week, but if there are any important files to backup in the meantime, I just copy them to the mounted system backup VHD, or wait for the scheduled daily Synctoy backup to take care of it. If you have to replace any corrupt system files on your C: drive, you can choose a restore point via “Show more restore points” in the System Restore wizard, and use a restore point that is located in the VHD. If you have an hour or so, you can restore your whole system, including the latest data, with this same image.
I mentioned that I used the free MS Synctoy on a daily schedule. I have it set up to copy new files directly to the system image VHD. Then, if needed, I can re-image my system, and all of the most recent work will still be there. I’ve been using this system for three months now, with no problems. As a believer in redundancy, I do keep a copy of my system images on an off-site drive, and I replace those VHD files with updated ones once or twice a month. I’m a photographer, and I make my living with my cameras and computers. I don’t take chances.