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Tips & Tricks : BitLocker requires recovery key when USB device connected at startup

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Sometimes when you start machine with BitLocker enabled and same time some storage device was connected to USB port, BitLocker might request Recovery Key. This happens because USB ports is listed on boot device search list. To avoid this type of event best idea is to remove USB from boot search list. However, changing list of boot devices might also trigger BitLocker.

How to deal with this type of situation? Follow steps below:

  1. Suspend BitLocker  – command: manage-bde -protectors -disable c:
  2. Reboot machine
  3. Go to BIOS and remove all USB devices from available boot devices list
  4. Boot up to Windows
  5. Resume BitLocker – command: manage-bde -protectors -enable c:
NOTE: All above commands have to be issues from Command Prompt with elevated privileges.

After that no more issues with BitLocker during startup when USB storage devices are connected.

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How-To : Enable BitLocker PIN on computer in workgroup

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If you have machine which is not connected to domain, but has TPM chip you might want to encrypt disks with BitLocker and enable PIN protection at boot-up.

In order to do that you have to make sure TPM is activated and enabled for provisioning in BIOS. Next step will be to allow PIN use, as by default that option is not active especially on machines not connected to Active Directory domain.

So, to enable ability to set PIN follow the steps:

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Tips & Tricks : Linksys WUSB100 ver.2 and Windows 7

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Default driver for Linksys WUSB100 Ver.2 doesn’t work on Windows 7 64-bit. Instead  of that Ralink USB RT2870 (currently MediaTek) driver can be used.

Properly working driver can be found here.

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Tips & Tricks : HP TouchSmart tm2 : Screen Rotation

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When upgrading drivers on HP TouchSmart tm2 tablet important is to keep in mind that HP Quick Launch Buttons package might disable screen auto-rotation. In order to restore that functionality remove HP Quick Launch Buttons and install older version of that package from here. Full information about package is available on HP Quick Launch Buttons web page availabel here.

Another option might be registry settings adjustment. Parameters which control screen orientation and bahevior are located under:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Hewlett-Packard\HP Quick Launch Buttons\Schemes\Default\8526

There are two important parameters:
Notebook_Docked_DisplayOrientation = 0
Tablet_UnDocked_DisplayOrientation = 3

Available values for those parameters:
0 – primary landscape
1 – seconday portrait
2 – seconday landscape
3 – primary portrait

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Code snippets : Windows : Clear Event Logs

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From script repository I did use in the past, VBscript which allows to clear EvenLog on Windows machine. I did use that on computers with Windows XP and Windows Server 2003. however, this script will work also on Windows 7 and Windows server 2008.

By default script clears EventLog on computer where script is executed. To clear logs on remote machine just modify variable strComputer and replace dot with name of the target machine.

Script will read all EvenLog files from machine and will go through them removing all events.

And here is script itself :

strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
& "{impersonationLevel=impersonate, (Backup, Security)}!\\" _
& strComputer & "\root\cimv2")
Set colLogFiles = objWMIService.ExecQuery _
("Select * from Win32_NTEventLogFile")
For each objLogfile in colLogFiles
objLogFile.ClearEventLog()
Next
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Code snippets : List all logical disks in Windows 7 Command Prompt

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Recently I was wondering how to list all available drives in Windows 7 PE Command Prompt. That happened to me when stuck in PXE boot command prompt window trying to find out what letter is assigned to USB stick I just plugged in. It looks like it’s not quite straightforward activity 🙂

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