Question about windows 10 upgrade

[CharlieBakes96]

I'm upgrading from windows 8.1 to windows 10 and I'm just wondering when sellecting this option http://i.imgur.com/fGxN0YS.png will it delete everything including all my movies and games off of my 2nd hard drive http://i.imgur.com/OlI7QCP.png

 

[torbendalum]

I'm not sure, but you could just disconnect 2nd drive to be sure

 

[lakimens]

I don't think it should, because that HDD has nothing to do with Windows.
You could still take it off for safety reasons, if it's a hard drive and not a partition.

 

[rgd1101]

Just to be safe, always backup your data.

 

[Scibility]

taking the second hard drive off would do, goodluck.