One more voice to this discussion - mine.
So to reiterate, I would like to make a single one time image in case of windows screwing up or hdd failure. Will the windows imaging suffice, or do I needs this free program you mention?
If you use the Windows 7 imaging tool it will image your entire hard drive. Reserve partition, recovery partition, and the main partition that contains your operating system and any other programs or data you may have installed. If this system image was made on August 1, 2011 (just as an example) and you use it on October 1, 2011 (again, just an example) your computer will be restored to
exactly the way it was on August 1. You would then have to install all updates that came out since August 1, any new programs that were added, etc.
If using the Windows 7 imaging tool, many people recommend making at least two system images. For example, you bring a new computer home from the store (or restore it from the recovery partition), then spend many hours eliminating unwanted bloatware, installing needed programs, getting all updates, making your customizations for themes, user settings, etc. Make a "master" system image so you don't have to go through all that customizing later on. Then, every week, or every two weeks, or every month (whatever works for you) make a new system image with the latest Windows Updates, newly installed programs, etc.
The Windows 7 imaging tool automatically names the system image
WindowsImageBackup. If you made a second system image it would simply overwrite the first
WindowsImageBackup. So to keep the first image and also a second (or third), I just rename the first image to something like
MasterSystemImage080111. Then when the second image is created I'll have the two images showing as
MasterSystemImage080111 and
WindowsImageBackup. Then I can rename the second image to
WindowsImageBackup081511 and so on and so forth. If you ever want to use the MasterSystemImage (or any of the others you've saved) just rename it back to
WindowsImageBackup.
As mjf has said, using the Windows 7 imaging tool images everything on your hard drive each time you use it to make another image. The reserve partition and recovery partition should never change so the 7 imaging tool wastes time imaging those partitions each and every time you make a system image. A tool like Macrium gives you more flexibility to image specific partitions and no others.
Hope this doesn't add more confusion.