VENU2603 :
I have a old Lenovo 32 bit Windows 7 laptop. Recently bought a Lenovo 64 bit Windows 10 64 bit Yoga 900 laptop. I wish to place the old Windows 7 HDD in a USB enclosure and boot from Windows 10 laptop. Will this work?
For multiple reasons, probably not.
1. You can't boot from a USB drive, unless you have done a whole bunch of specific things to make it do that.
2. You generally can't boot from an OS from a whole different PC or laptop. Sometimes it works, but don't count on it.
Why are you wanting to do this?