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Windows 7: Moving files between two Bitlocked external harddrives closely freezes

23 Nov 2014   #1
joshdw

Windows 7 Ultimate 64-bit SP1
 
 
Moving files between two Bitlocked external harddrives closely freezes

Hello guys,

I am wondering if anyone can help me figure out what on earth is causing these strange freezes.

I have two external hard drives with these specs:
HGST HDS 5C4040ALE630 - 4 TB NTFS Partition - GPT
Hitachi HDS5C3020ALA632 - 2 TB NTFS Partition - MBR
(Both are encrypted with Bitlocker, might have something to do with it)

Both are hooked up via USB3.0 ports (with 3.0 cables) directly into the motherboard.

So what is the problem? Well I can access them both at the same time, no problem. I can copy and move files from one of the drives to my internal drives and vice versa, even at the same time. But, I can NOT copy or move files from one drive directly to the other. The transfer process will start but freeze after a few dozen megabytes and stay frozen until I cancel the transfer, and wait a few minutes for it to react.

I use TeraCopy, I have uninstalled and tried the normal windows 7 file transfer but that hasn't helped either. Furthermore, with windows 7's default file transfer I wasn't able to cancel it and I eventually had to shut down the pc.

So right now I have to move files from drive A to an internal drive C, then move the file from drive C to drive B. It is simply annoying and I do not understand what is happening.

I've also checked the drives, they have no errors, no bad sectors, they are running great (no noises either).

Any ideas? Thanks a lot in advance!


My System SpecsSystem Spec
.
23 Nov 2014   #2
matts6887

Windows 7 ultimate 64-bit
 
 

Do any errors come up saying anything at all about bitlocker? Because i think you are probably right when you said that bitlocker could have something to do with it because what bitlocker does is encrypt to secure the files you want secured. So i would try turning that off first and then try and transfer the files you need/want and see if it succeeds. If it doesnt; post back.
My System SpecsSystem Spec
23 Nov 2014   #3
joshdw

Windows 7 Ultimate 64-bit SP1
 
 

Quote   Quote: Originally Posted by matts6887 View Post
Do any errors come up saying anything at all about bitlocker? Because i think you are probably right when you said that bitlocker could have something to do with it because what bitlocker does is encrypt to secure the files you want secured. So i would try turning that off first and then try and transfer the files you need/want and see if it succeeds. If it doesnt; post back.
No errors, it just completely freezes, it's usually after a few seconds and approximately 337 MB.
The 2 TB drive is completely full, thus the reason I'd like to copy the files onto the 4TB drive. I initiate a transfer for a 1GB file and it will start fine, great speeds, then just freeze and stay frozen till I cancel it and wait a few minutes for it to cancel.

I'd rather not remove the bitlocker because it takes hours on such large drives, plus after messing around a bit more I found that, I can't copy files from drive A to an internal drive C AND copy files from internal drive C to drive B at the same time.
Does this mean my board can't support transfers like this?
Specs are in my profile.

Thanks for the help!
My System SpecsSystem Spec
.

23 Nov 2014   #4
joshdw

Windows 7 Ultimate 64-bit SP1
 
 

So I read a bit online and the help of a friend:

I DISABLED write cache on the drive that has the files.
I ENABELD write cache on the drive that is receiving the files.

Seems to be working good now, but it's running at 26MB/s instead of the normal 100+. Really want to know if there's an alternative route. Don't want to do this every time I need to transfer files back and forth.

Edit: After a few files it stopped again. It seems to be only the 2TB drive that is slow. I can't open explorer to it, but the 4TB is fine.
My System SpecsSystem Spec
24 Nov 2014   #5
joshdw

Windows 7 Ultimate 64-bit SP1
 
 

Bump! I'd love to find out what is causing this
My System SpecsSystem Spec
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 Moving files between two Bitlocked external harddrives closely freezes




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