I have a 150 GB partition for 10576 and the rest of a TB for RTM .
The 150 GB 10576 partition gives me some breathing and download room in the test builds .
I store media , most programs and back up anything important to the RTM partisan
and run a lot of x 86 programs and the media from 10576 using shortcuts to their .exe and folder locations in RTM
You never know how the next test build will be . I had to delete my std user acct in 10576 I like to use on the web because it got corrupted with the 10576 update .
I was able to recover the data, bookmarks and configuration info I had backed up in RTM and make a new user acct in 10576 .
FWIW the 10576 admin acct was unscathed (this time ) ☻