Can i install windows 10 without product key

[Howell Keith Rosales]

Hi!

I have a 120gb Kingston SSD and I want the ssd to be the local disk c and make my 297gb as my disk d. but I will not clone cause my HDD is already full and I plan to clean install the ssd with windows which I already upgraded. My question is do I have to enter a product key to when I install windows 10 to the ssd? Please help i'm a newbie

 

[Adamw0611]

When I did this I wanted to do a clean install, after downloading the Media creation tool it had 2 options, "Upgraded this PC now" and "Download ISO to install on another PC... I messed up downloaded the ISO because I wanted to do a clean install. When I tried to install it I did not have a CD Key, so I went back online and found I had to choose the upgrade this PC now option, during the upgrade it will ask if you want to delete everything, keep, etc, I chose just keep everything. After the upgrade I installed from the ISO on the flash drive, clean install, skipped the CD key during installation, and once it was done I checked and it was an activated copy of windows 10 pro with a clean install.

 

[Howell Keith Rosales]

When I did this I wanted to do a clean install, after downloading the Media creation tool it had 2 options, "Upgraded this PC now" and "Download ISO to install on another PC... I messed up downloaded the ISO because I wanted to do a clean install. When I tried to install it I did not have a CD Key, so I went back online and found I had to choose the upgrade this PC now option, during the upgrade it will ask if you want to delete everything, keep, etc, I chose just keep everything. After the upgrade I installed from the ISO on the flash drive, clean install, skipped the CD key during installation, and once it was done I checked and it was an activated copy of windows 10 pro with a clean install.

I'm confused with you answer

 

[Adamw0611]

short version is yes you need a cd key, you get that by upgrading.

 

[guanyu210379]

Win10 can be installed without CD-Key, if you previously have activated the Win10 on the same PC.
The key is here to upgrade your Win7 or 8/8.1 to Win10 first and activate it.
After Win10 is activated, Win10 kinda remember that the PC has Win10 already and you can install Win10 from scratch without entering the license keys onto the same PC.