Windows Vista x64 How To Dual-Boot It The Right Way?

[legacyfan]

I'm planning to try again with windows vista on my 2nd hard drive and want to make sure I do it the way it's supposed to go do in don't end up having a install that likes to break itself (like the last one did) if anyone knows the proper way to do this or anything im not doing it would be much appreciated

[winvispixp]

what do you mean by "the proper way"? what is the other os you are trying to use and it doesn't work?
I usually go from the oldest to the newest (install vista first then windows 10 for example) and never had issues

[legacyfan]

what I'm trying to do is install windows vista x86 (not x64) in a 2nd harddrive with windows 10 ltsc on another but it always gives me a nit enought space to store temporary files error during startup

[winvispixp]

if you remove the hdd which has win 10 does the error go away? i know if you install it this way it won't make a dual boot, but if the installation is successful then you might want to save you personal files and format everything
i remember having the same issue and that was the only way to go