Ron posted this via
:

The November release of Windows 10 version 1151 removes the option to
roll your machine back to the previous operating system before the 31
day deadline.

http://windowssecrets.com/top-story/
windows-10-gets-its-first-big-update/

I just transitioned to Win10 Pro version: 1511 OS Build: 10586.11 ... I
held back for a few days (using the Settings | Updates & Security | Windows
Update interface to delay...) from NOV 12th until NOV 19th, just to peruse
any complaints that popped up on the Internets from the intial release[s].

The option to roll-back to Win8.1 Pro is still there... On mine. The
WindowsSecrets author either has adaptive issues or had an intensely
personal experience which s/he's trying transfer to h/er/is area of
influence.

PLUS : [WORTH NOTING], I backup imaged each step of the way from Win7
Home Premium, thru Win 8 Pro, thru Win 8.1 Pro, thru Windows 10 initial
upgrade and now the cumulative upgrade. This makes the issues of rolling-
back, and the time-limitations to roll-back, very moot... at least during
the year-long "free" upgrade period.

Listen peeples, we've got a freebie year to mess-around with this new OS -
explore options and configurations - as well as share tips and findings.
MSFT has committed to Windows 10 as the future of computing. IMHO, it's
better to learn now than play catch-up - and SPEND THE MONEY - to upgrade
next year, sometime after the freebie period has expired.

Remember, there is no "I" in "upgrade"!

Folks should seriously consider obtaining one of the fine freeware backup
imaging tools to protect and preserve their current OS, especially if they
really, really 3's it so much.

I use AOMEI Backupper Standard; as well as using AOMEI Partition Assistant
Standard Edition to partition my HDD for data files storage - then copy
these as they're created to a removable HDD - also uploading a copy to an
off-site server ("Cloud"-type). Fubar'ed updates and system glitches are
easily resolved, plus my preferences in a past life are preserved. (^;

FWIW

--

I AM Bucky Breeder, (*(^; and,
It's like Yogi Berra, RIP 9/22/2015, always used to say:
"The future ain't what it used to be!"

http://i.imgur.com/f193YWS.jpg?1