1.    06 May 2016 #1
    Join Date : Mar 2016
    Posts : 10
    Windows 10

    BitLocker questions


    I'm thinking of using BitLocker, but I need to know a few things first.

    1. I use two partitions, one for the OS (and installed programs) and another for Documents.

    2. I know that I'll have to format the OS drive and re-install Windows at some point in the future (leaving the D:\ drive encrypted). Will I still be able to mount the second partition (D:\) after re-installing Windows into C:\?

    3. I do NOT intent to use a USB stick and I DO NOT have a TMP module. The only thing protecting my data will be my passphrase.

    I have this concern because a friend of mine said he "lost ownership of the D drive" (encrypted) after formatting the C drive (which was also encrypted).
      My ComputerSystem Spec
  2.    06 May 2016 #2
    Join Date : May 2015
    Central IL
    Posts : 4,349
    Mac OS Sierra

    Yes you can lose ownership of a encrypted drive or folder when formatting and reloading those programs. The key is linked to a bit that gets loaded when you encrypt.

    I keep no important information on any hard drives. I keep them on a portable device and on a drive space on a provider, so that if something happens to the portable drive, I still have the other copy.
      My ComputerSystem Spec
  3.    06 May 2016 #3
    Join Date : Mar 2016
    Posts : 10
    Windows 10
    Thread Starter

    So if I format C:\ I lose ownership of D:\ and cannot access it anymore? That's odd, because the MBR will be intact, and headers of the D partition as well. The hardware will also not change, so I don't see why I'd lose ownership of D:\ just by formatting C:\.
      My ComputerSystem Spec
  4.    06 May 2016 #4
    Join Date : May 2015
    Central IL
    Posts : 4,349
    Mac OS Sierra

    As I stated before, because Encryption programs set a bit for the key on the drive that the files are encrypted, you will lose access to them. Before formatting any drive, you have to unencrypt the files. This is a subject that has been around since encryption started to be used back in the CP/M and early DOS days.
      My ComputerSystem Spec
  5.    06 May 2016 #5
    Join Date : Mar 2016
    Posts : 10
    Windows 10
    Thread Starter

    Quote Originally Posted by bro67 View Post
    As I stated before, because Encryption programs set a bit for the key on the drive that the files are encrypted, you will lose access to them.
    Which is OK because I don't mind losing the data at C:\ (the partition the will be formatted). I will not touch the D partition, I won't format it, it will be intact because I'll format only the C: partition.

    If formatting the C partition means I can't access the data at the D partiton (even though the D partition will be intact) then this is a serious design flaw on BitLocker.

    Quote Originally Posted by bro67 View Post
    Before formatting any drive, you have to unencrypt the files. This is a subject that has been around since encryption started to be used back in the CP/M and early DOS days.
    There seems to be a confusion here. I'm going to be working with two partitions on the same HD, and I will only format the first partition (the "C drive"). I'm not going to do FDE, I will encrypt the partitions separately. I don't mind losing data on C (the first partition) because backups of importante files will be stored in D (the second partition, which will be encrypted and will NOT be toutched by the formatting process). I've been doing this for 10 years on Linux and previous versions of Windows with TrueCrypt/VeraCrytpt and it always works, the partitions are encrypted independently of each other.
    Now, obviously, if I ever format the D partition (which is not the case), I expect to lose the data on it.

    If formatting the C partition means I can't access the data at the D partiton (even though the D partition will be intact) then this is a serious design flaw on BitLocker.
      My ComputerSystem Spec
  6.    06 May 2016 #6
    Join Date : Sep 2014
    Nashville, TN
    Posts : 3,143
    Windows 10 Pro

    Each drive has a Bitlocker Recovery key that you can print, or save to another disk. You must use this key if the structure of your disk changes, or as you mention, you reformat the primary disk. When you mount the drive in the new OS, it will be "locked" and you can use the recovery key to unlock it.
      My ComputerSystem Spec
  7.    06 May 2016 #7
    Join Date : Mar 2016
    Posts : 10
    Windows 10
    Thread Starter

    Quote Originally Posted by Mystere View Post
    Each drive has a Bitlocker Recovery key that you can print, or save to another disk. You must use this key if the structure of your disk changes, or as you mention, you reformat the primary disk. When you mount the drive in the new OS, it will be "locked" and you can use the recovery key to unlock it.
    Thank you, that is exactly what I was looking for
      My ComputerSystem Spec
  8.    07 May 2016 #8
    Join Date : May 2015
    Central IL
    Posts : 4,349
    Mac OS Sierra

    It has nothing to do with the C:\ drive. I would suggest that you do some research on how Bit Locker works.
      My ComputerSystem Spec

 


Similar Threads
Thread Forum
Solved Bitlocker without TPM help
Hi all, I've been having a bit of trouble trying to get Bitlocker working on my Dad's laptop. He recently bought a new laptop with Win 7 pro and I upgraded it to Win 10. It all went smoothly except now when I'm trying to get Bitlocker to encrypt...
AntiVirus, Firewalls and System Security
How Secure Is Bitlocker?
I have read, on the Internet, that Bitlocker can be got into, without using the password, by 'experts using encryption breaking tools. I use a 13 part password, incorporating upper case & lower case letters, numbers and special (punctuation?)...
AntiVirus, Firewalls and System Security
Solved BitLocker
This may sound Odd or maybe I have a memory block, But what is Bit Locker ? Did it com with win.10 And what is it's function I was thinking of Bit Defender Antivirus.But I know thats not it .
AntiVirus, Firewalls and System Security
New W10 User Questions (Basic Questions, Please)
Hello, Brand new user. a. The new PC came with McAfee anti virus. Should I use it ? Is it as good as AVG, e.g., which I used on my old W7 PC ? Use them both ? b. And, how do I turn on the "Defender" anti virus which I understand is...
AntiVirus, Firewalls and System Security
No Bitlocker
I am unsure if this is applicable here, however, it is about security. I want to encrypt a drive and thought I would use Windows Bitlocker, I can't locate it on windows 10. Is there a substitute for bitlocker on Windows 10? :cool:
AntiVirus, Firewalls and System Security
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 05:25.
Find Us
Twitter Facebook Google+ Ten Forums iOS App Ten Forums Android App



Windows 10 Forums