Disk imaging on dual boot systems

I use a Disk Image Program under Windows but I now have a dual boot system.

I have one internal hard drive with 2 partitions.

Both o.s.es reside on the first partition.

Second partition is used as a cache directory for a browser, but contains no operating system.

Macrium Reflect is what I use and have been imaging just the first partition. (when all I had installed was Windows)

Those images are stored on an external hard drive.

So if I can not boot up for some reason, will that image be able to restore that 1st partition ?

Thanks.