In my opinion, I think win10 users should know about "fast start up", it was a surprise to me, maybe you all already know, but I think it's worth a warning, so here goes:
Win10 fast start up, aka quick boot, is touted as a feature of win10, but what you may not know is it is the default when installed, and I think it assisted in forcing a hard drive failure. It can be disabled via control panel, power options, and I recommend users disable it. It doesn't make boot times that much better anyway, a couple minutes perhaps, but I don't think it's worth it in the long run.
So, how did this feature help me loose a hard drive? I'm convinced it was a contributing factor, the drive was getting on in years, but it was helped out the door by win10. This is what I believe to be a key issue in the way fast start up works: it does not allow various commands / utilities to see win10 as fully shut down. Basically it takes an image of system state when you shut down, and boots quicker by using that "image" when it is turned back on. So what?
Well, let's pretend you have a start up issue, and it happens to be a big one, like maybe the MBR (main boot record) has become corrupted. Win10 displays one of it's blue screen messages and enters the auto-fix routine, and, it can and does sometimes go through this multiple times. Suppose it can't boot because it can't fix itself? Now you get a frowny face on your blue screen. HONESTLY! a stupid frowny face :( and a cryptic message. So you, being a savvy user, quickly slap in your windows recovery CD and start that journey. Like perhaps you want to run check disk, or fix MBR, or any one of several things you could do. And --- here it is, the killer --- each and every time you do ANYTHING that would involve writing to the drive, you get a message such as "....drive is locked..." or "...device I/O error..." or the lovely "....drive is un-mountable...". I discovered this the hard way, by experience. And I believe the reason I was getting these messages is because "....windows is not fully shut down, go back and fully shut down windows and try again." Now that last quote did not come from windows, it came from a third party cd based boot tool that assists in data recovery from a drive that cannot be written to. And of course, with the bad drive it becomes a catch 22, because the drive cannot be booted to windows, therefore you can't disable the quick shut down image, and therefore various utilities, such as windows command and such, are presented with a locked drive which can never be unlocked.
I discovered this because in my situation, I was recovering data from said drive, and was trying to copy it to my brand new drive which had win10 freshly installed, shut down, and booted from CD to enter the data recovery tool outside the windows environment. I could see the bad drive's files, I could select them for copy, but it would not write to the new drive, because it was LOCKED. Why was it locked?? Because of fast start up being enabled, and that nasty little "image" sitting there, blocking everything. I exited the utility, rebooted from the new drive into windows,,,, googled "how to fully shut down windows 10", and there was the answer,,,, "disable fast start up". Which I did, shut down, then rebooted from CD, launched the recovery tool, and now I was able to copy from the old drive and paste to the new one. The old drive, still locked, and forever locked, was only available in a read only state, even to that very powerful tool.
From now on, "fast start up" will NEVER be enabled on any win10 install that I have control of. Just thought I'd pass this painful lesson on, it may help someone else. If you want to read the original post on this, here is a link: