Yes, but all the files on the 360 drive would be deleted. If you want to use 360 saves on xb1, upload to the cloud. If you want to upgrade the Xbox one hard drive, You need to open the console in order to get access to the xb1 hard drive and need to copy the files on to a new drive it's not just insert and your able to play like the 360. Need to use Linux and other tools:hi I'm wondering whether I can use an Xbox 360 HDD for an Xbox one.
I also would like to increase the size of the hdd if possible.