I had an extra hardrive and have been beta testing windows 10. I like the operating system but will mind that it is not a very good operating system for those that have any privacy concerns.
In the fine print microsoft desires to keep even data from private folders backed up on their servers.And make them available to any government agency that asks. Not sure how this works if you encrypt your data,as MS likely keeps the keys for their encryption software.
If you install windows 10,don't use the "express" settings. Use custom settings to be able to turn off some of the features you may not like. Such as the option that shares your wifi login to anyone in your contact list. Scarey thought huh! This exploit may make it also available to anyone in their contact list as well.
Be aware that facebook wishes to be able to do this as well.
Although I will use the Windows for web surfing and benign stuff, Any banking or personal things will be done with the Linux drive plugged in. I will not even let both drives plugged in for the dual boot option,just in case.