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Windows 7: Bitlocker is slow


24 Oct 2009   #1

Windows 7 Ultimate
 
 
Bitlocker is slow

I watched the videos on the Microsoft site about bitlocker. They said it would take "a few minutes". I started bitlocker on a 1TB USB drive 3 hours ago and it is only 18% finished. Microsoft's idea of a few minutes is a lot different than mine.

Windows 7 Ultimate
Oldspook


My System SpecsSystem Spec
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24 Oct 2009   #2

Windows 7 Ultimate (x64) SP1
 
 

Quote   Quote: Originally Posted by oldspook View Post
I watched the videos on the Microsoft site about bitlocker. They said it would take "a few minutes". I started bitlocker on a 1TB USB drive 3 hours ago and it is only 18% finished. Microsoft's idea of a few minutes is a lot different than mine.

Windows 7 Ultimate
Oldspook
That's very strange as I used it not that long ago on a drive and it was very quick
My System SpecsSystem Spec
24 Oct 2009   #3

Windows 8.1 Pro (x64)
 
 

Are you actually encrypting an entire 1 TB drive? Bitlocker encrypts every single bit...1 TB has A LOT of bits... (I'm not using technical correct language, BTW!) It is not called full disk encryption for nothing.

Encryption in general have never been all that fast...
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24 Oct 2009   #4

Windows 7 Ultimate
 
 

Quote   Quote: Originally Posted by logicearth View Post
Are you actually encrypting an entire 1 TB drive? Bitlocker encrypts every single bit...1 TB has A LOT of bits... (I'm not using technical correct language, BTW!) It is not called full disk encryption for nothing.

Encryption in general have never been all that fast...
Window7 Ultimate bitlocker only does whole drives. The whole drive is being encrypted. It has been going for 4 hours now and is 20% finished, at this rate it will be done at noon tomorrow.

I am afraid to stop it until it finishes, I might loose the data on the drive.
My System SpecsSystem Spec
24 Oct 2009   #5

Windows 8.1 Pro (x64)
 
 

Actually Bitlocker does partitions. It has to do partitions because it must leave a section unencrypted for boot files.
My System SpecsSystem Spec
24 Oct 2009   #6

Windows 7 Ultimate
 
 

Quote   Quote: Originally Posted by logicearth View Post
Actually Bitlocker does partitions. It has to do partitions because it must leave a section unencrypted for boot files.
Your right, all my drives only have one partition.
My System SpecsSystem Spec
25 Oct 2009   #7

Windows 7 Ultimate x64
 
 

I seem to recall Microsoft stating that encrypting would take approx 10 minutes for every 1GB of data. If this is true, 1,000GB's would take about 7 days.
My System SpecsSystem Spec
25 Oct 2009   #8

Windows 7 Ultimate
 
 

Quote   Quote: Originally Posted by pparks1 View Post
I seem to recall Microsoft stating that encrypting would take approx 10 minutes for every 1GB of data. If this is true, 1,000GB's would take about 7 days.
Where did Microsoft say that? I wish I had heard it before I started the encryption. The 1T drive was 80% full of data. May it is slower because it is an external USB2 drive.

Watch the videos, the Microsoft gal said: "it would take a few minutes to encrypt the dirve". Stupid broad....
My System SpecsSystem Spec
25 Oct 2009   #9

Windows 8.1 Pro (x64)
 
 

I don't think they were expecting anyone to encrypt a 1 TB drive with 80% of data on it while connected to a slower bus....I believe you are what they call an edge case.

An edge case is a problem or situation that occurs only at an extreme (maximum or minimum) operating parameter.
My System SpecsSystem Spec
27 Oct 2009   #10

Vista HP, Vista Ultimate, XP Pro, Seven Ultimate x2
 
 

It is also much slower to encrypt a drive while loaded with data.
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 Bitlocker is slow




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