You don't have the Windows 7 install DVD?
You've got it copied to the second hard drive, the install programs?
And what kind of PC are you using? You say Win XP x86 to Win 7 x64, does your CPU support 64-bit?
I don't have DVD Drive and I cannot use DVD.
Yes my PC can support x64 ( phenom II x4 965 BE) and everything but I am wondering if I could install win7 from my second HDD, something like bootable HDD. I am not sure, I've been searching whole day and didn't find any proper source.