If
you are facing issues in transferring data from and to external hard disk (USB)
using a Windows7 system, then most likely the solution given here should work
for you.
My System Config
- Windows7
Professional, 64 bit
- Lenovo
Thinkpad T520, 50 GB HD, 4 GB RAM, Intel i7 2.2 GHz
Symptoms
- External
hard disk to and fro transfer rates were extremely slow
Debugging
- The
problem was not with the USB Cable
- I
was able to replicate the problem with both my Seagate Freeagent 750 GB as
well with WD Elements 1 TB drive
- The
copy from Local disk (C:\) to Local disk (C:\) also became very slow
at these times, though better than the external HD one
- The
problem was not there EVEN on my old laptop -Windows XP, 100 GB HDD, 2 GB
RAM, HP 6910p
What are the things that I found on net that did not work?
- Note
that the disabling of the BIT (Background Intelligent Transfer) Service or
changing the Policy of drive to "optimize the performance"
didn't work for me.
The following didn't do any
wonders for me :-
1. Open "My Computer" or "Computer" from your (Start) Menu or Button
2. Right-click the external Hard disk drive from the list and select "properties"
3. Click the "Hardware" tab
4. Highlight the drive your having problems with from the drive list and click on "Properties"
5. Click on the “Policies” tab
6. You will see two radio buttons - "Optimize for quick removal" and "optimize for performance"
7. If not selected, select "Optimize for performance" and click on "OK". If running Vista or Windows 7 also check "enable write caching on the disk"
8. Click on "OK" and exit
Nor did the following work for me :-
1. Go
to Control panel
2.
System and Maintenance
3.
Administrative tools
4.
Run services shortcut
5.
Stop and disable the BIT (Background Intelligent Transfer) Service
These
are given here:
But I reached to the eventual solution via a link
from here via a post by "noiox8"
What worked is the solution given here courtesy Peter Bromberg.
Thanks a ton Peter!
Turn off Remote Differential
Compression
Remote Differential Compression
measures the changes in files over a network to transfer deltas with minimal
bandwidth rather than transferring an entire file that has previously been
moved. Because it constantly checks for file changes, this service can hinder
system performance.
To disable this service:
1. Open windows7 search box
2. Search for “Turn Windows features
on and off”
3. Scroll down and uncheck
Remote Differential Compression
This eventually worked for me.Quirks of windows!
Hope you find this useful and it works for you if you face this
issue.
\Vikram