Is it possible to back-test 1 yr the 1 Min+5Min?


I've tried and the only ones that seem to work is when I back test against 1.5 months. I've already downloaded the entire history of the M1 and M5 but it only goes as far back to 8-25-09 on the M1.



Whatever history you have downloaded, you should be able to see in the charts and use for testing for as far back as it goes, subjected to some practical limits like PC memory etc.

So that means you missed some step during the download and conversion, assuming whatever instructions you were following is complete in the first place.