Windows 8 and 8.1 Forums


Why would Asus encrypt the C partition

  1. #21


    Posts : 959
    Windows 8.1, 10


    I suspect the reason it's encrypted is s because Windows 8.1 introduced something called Pervasive Device Encryption.

    If your device meets certain criteria, (boots from an SSD, Secure Boot and (as I found out today) 64 bit, and a few other things), then it gets encrypted.

    It's Microsoft not Asus that do it, and it's on editions of Windows 8.1 that don't have Bitlocker (although I think it shares the same technology but is less controllable).

    See some of these links...
    Windows 8.1 Device Encryption - the Skinny
    Windows 8.1 Preview Security Re-visited - Canadian IT Professionals - Site Home - TechNet Blogs
    https://technet.microsoft.com/en-us/.../dn140266.aspx

    Secure Boot is part of the story but is not the same as device encryption - you have have secure boot on a disk which isn't encrypted.

      My System SpecsSystem Spec

  2. #22


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    Well, my experience is slightly different;

    1. Both systems I dealt with were 32bit systems
    2. Secure boot is not accessible when encrypted. You cannot change it.

    I wrote a little tutorial on how to deal with it.
      My System SpecsSystem Spec

  3. #23


    Posts : 959
    Windows 8.1, 10


    Ah that's interesting. So if they have full Bitlocker, are the devices you were looking at Windows 8.x Pro then?

    Or just regular 8.1? (Which doesn't have full Bitlocker and presumably is using the Pervasive encryption.)

    I'm wondering if I can enable the encryption on mine (although I'd still want to be able to boot from USB).
      My System SpecsSystem Spec

  4. #24


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    It was a regular 8.1 (not Pto) 32bit and it was bitlocker. I was also amazed but somewhere I read that bitlocker comes now with all editions. With the encryption enabled, I could not boot from USB because I could not shut the secure boot off. Maybe it will work if you shut it off before encryption. It would defeat the purpose though.
      My System SpecsSystem Spec

  5. #25


    Posts : 454
    Windows 8.1 Pro with Media Center


    Quote Originally Posted by whs View Post
    It was a regular 8.1 (not Pto) 32bit and it was bitlocker. I was also amazed but somewhere I read that bitlocker comes now with all editions. With the encryption enabled, I could not boot from USB because I could not shut the secure boot off. Maybe it will work if you shut it off before encryption. It would defeat the purpose though.
    I'm still unclear if you tried booting from UEFI media, like the Terabyte environment I linked to earlier. The answer would seem to be to NOT turn off Secure Boot or otherwise mess with BIOS settings but to boot another signed OS.

    TeraByte Unlimited Knowledge Base

    quote:

    • TBWinRE and TBWinPE (the Image for Windows boot media) support booting via CD or USB flash drive on UEFI systems. The BIOS can be in either UEFI mode or Legacy mode. Secure Boot is supported for TBWinRE created on Windows 8 systems and for TBWinPE created using the Windows 8 ADK.
    • Image for Linux (IFL) v2.79 or later supports booting via CD or USB flash drive on UEFI systems. Secure Boot is supported with IFL v2.81 or later. Attempting to boot IFL v2.80 or earlier with Secure Boot enabled will result in the boot being blocked.
    • Image for DOS (IFD) will not boot on UEFI systems configured in UEFI mode. To boot on these systems Secure Boot must be disabled and you must enable or use Legacy mode.
    • BootIt Bare Metal will not boot on UEFI systems configured in UEFI mode. To boot on these systems Secure Boot must be disabled and you must enable or use Legacy mode.


    Seems pretty clear cut, right down to what does and doesn't work with Secure Boot...
      My System SpecsSystem Spec

  6. #26


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    Nah, I did not use any special boot media. I was looking at this one but did not try it.
      My System SpecsSystem Spec

  7. #27


    Posts : 959
    Windows 8.1, 10


    When you had problems booting from USB, what was on the USB? A few months ago I tried the free Macrium and Aomei backup tools, but only Macrium would boot on a Secure Boot setup. Also you have to get the bits right - 64 bit Macrium (using WinPE) won't boot on my 32 bit tablet which is also using EFI I believe.
    But the problems I had were due to using a USB which wasn't signed in the right way, not a problem with WIndows.
    I don't think the device encryption is why you can't boot; although it does mean you won't have access to the file system if you boot from Linux or whatever.
      My System SpecsSystem Spec

  8. #28


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    It was a lot simpler - there was no choice in the temporary boot menu regardless what I put in. The only choice was windows. I know all those Macrium odds and I have 32bit and 64bit MBR and UEFI recovery sticks. I also tried a Linux stick.

    I also tried to image with AOMEI OneKey because there you need not recover via USB. It could not even deal with encrypted drives.
      My System SpecsSystem Spec

  9. #29


    Posts : 454
    Windows 8.1 Pro with Media Center


    Quote Originally Posted by whs View Post
    It was a lot simpler - there was no choice in the temporary boot menu regardless what I put in. The only choice was windows. I know all those Macrium odds and I have 32bit and 64bit MBR and UEFI recovery sticks. I also tried a Linux stick.
    I don't understand. I thought you just replied to me that you didn't try any boot media that is documented to work with Secure Boot. Which is it?
      My System SpecsSystem Spec

  10. #30


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    I tell you the truth. I had about 10 flash drives on the table and I do not exactly remember which ones I took - that was 4 weeks ago.
      My System SpecsSystem Spec

Page 3 of 4 FirstFirst 1234 LastLast
Why would Asus encrypt the C partition
Related Threads
Hey everyone :) Alright, so my ASUS laptop has been getting a little slow lately, so I decided to reinstall. Now I know my PC has an ASUS recovery partition, which reļnstalls the pc with all the tools, drivers etc, since I've used it before. But now when I restart the computer and press F9 and...
I have recently attempted to reset my laptop to factory and i get this issue Computer specs: Asus VivoBook S550CM 8gb Ram 1. 50015 2.50016 HELP, Need more info? please post on thread
I have some problems with my laptop ASUS K55VD. I had windows 8, but with the store of windows I have updated to windows 8.1. I have tried to use the recovery partition, but every time I try appears a message. Failed to reset your computer. A partition of unity necessary is missing. 48360For...
ASUS Recovery partition in Installation & Setup
Hi All, I've read a lot of posts and a little confused. I upgraded ASUS S400CA to 8.1 . I just need to create a recovery disk with the option of copy from recovery partition which is graded out as many of you know. Can you please provide me with the steps of what I will have to do to create a...
I've just received an Asus S301L laptop, with Win8 Pro preinstalled. The owner wants Win8 wiped and Win7 installed along with Scientific Linux. I've disabled secure boot and enabled CSM in the BIOS, thus getting rid of the annoying UEFI boot process, and I'm now able to boot old-style from...
Hello i buy new asus X550CC-XO028H ultrabook with windows 8 preinstalled.I upgrade windows 8 to 8.1 over windows store.I get many erros in event viewer.So now need restore windows 8 from recovery partition.Install all programs and upgrade to 8.1.But i cannot to do this.Windows 8.1 cannot find...
My tablet is running fine, but I did something (not bright) which could leave me in a lurch later. Here's what I did, and what I'm looking for. Soon after I purchased my Asus VivoTab Smart, I made a USB recovery disk, complete with recovery partition. Then, to save disk space on the tablet, I...
Eight Forums Android App Eight Forums IOS App Follow us on Facebook