How to use Windows Phone 7 as USB Drive

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How to Use Windows Phone 7 As a USB Drive
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• Wouldnt it be great to use your Windows Phone 7
  as a portable USB drive, rather then carrying a
  USB flash drive along with you?

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• Yes, I know the same question has already been
  aroused in mind of many WP7 owners, but there is
  no way you can achieve this until now.

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• Most of the WP7 handsets has several gigabytes
  worth of storage capacity but there is no way you
  can access them directly from your PC.

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• M. Daou has been digging into the Windows
  registry file to find out the solution. Luckily,
  he found out a nifty trick to use Windows Phone 7
  (WP7) as a portable USB drive.

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• This simple to follow registry tweak will let you
  use your WP7 device as USB drive or memory card.
  No need to carry a separate flash drive when you
  already have your WP7 handset with you. Follow
  the below steps carefully.

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• Note Remember to back up your registry before
  making any changes to it.
• Use WP7 as Portable USB Flash Drive

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• You need to have Windows Phone 7 device and Zune
  installed to your PC. You should also connect
  your WP7 device to Zune once before using this
  registry tweak.
• Make sure your Windows Phone is not plugged in
  when you apply this steps.

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• Step 1 Open Windows Registry Editor
• Go to Start-gtRun and type regedit
• Step 2 Navigate to following location
• HKEY_LOCAL_MACHINESYSTEMCurrentControlSetEnumUSB
  then press CtrlF to search ZuneDriver

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• You should see something like below (click on the
  screenshot for larger preview)

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• Step 3 Look for VID_045EPID_04ECMI_00 folder.
  You might find multiple subfolders under this
  folder in case if youve multiple WP7 devices
  connected to Zune. There is no direct way to tell
  which device belongs to which subfolder entry. In
  most of the case youll be using only one device.

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• Edit the following entries shown in right pane of
  Registry Editor Window
• ShowInShell 0 to 1 lt- it will display device
  content in  Windows Explorer
• PortableDeviceNameSpaceExcludeFromShell 1 to 0

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• EnableLegacySupport 0 to 1 lt- this will enable
  Windows Explorer to detect connected device

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• Thats it. Next time whenever you plug-in your
  Windows Phone 7 to your PC, it will show it in a
  Windows Explorer (Zune software will also display
  the connected device as usual).

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• You should understand that this registry tweak
  only allows you to access Zune storage part of
  Windows Phone 7. There are few restrictions using
  the above registry hack.

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• Although you can use your WP7 device as a
  portable USB drive, you will not be able to make
  documents work on your Windows Phone. There is no
  access to Office storage folder so copy pasting
  word, pdf or other office documents to folders
  like video will not help much.

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• Den Delimarsky has also come up with the solution
  to use Windows Phone 7 as USB mass storage mode
  on your PC

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• Den is quite sure about his method and he has
  gone further to provide nitty-gritty of this
  application. For non-techies users (like us) he
  is also planning to release an application when
  the work is done

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• He has gone one step further to explain how he
  has explored physical location in the phone
  system where application data is stored i.e.
  \Applications\Data.

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• All Applications data are stored in isolated area
  located at \Applications\Data\APP_ID\data\isolated
  store.

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• Well let you know as soon as this application is
  available for download.

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• Credit Windows Phone 7 App Blogs