How To Fix Boot/BCD 0xc000000f Error Windows 7

April 17, 2012 12 Comments

This article is specific to Windows 7 but similar errors occur on Vista and Windows 2008/R2.

After rebooting your computer you receive the following error:

Windows Boot Manager
Windows failed to start. A recent hardware or software change might be the cause. To fix the problem:
1.insert windos cd and run a repair your computer option.
File: /boot/bcd
Status: 0xc000000f
Info: an error occurred while attempting to read the boot configuration data.

You may receive a similar error which lists the error code as 0xc0000034 or missing file: \windows\system32\winload.exe instead.

You may also receive further errors after trying to repair the bcd store using bootrec and bcdedit as follows.

The requested system device cannot be found.
The “Windows Boot Configuration Data File is Missing Required Information Read more of this post

Filed under Windows 2008, Windows 7 Tagged with , , ,

“A Required CD/DVD Device Driver Is Missing” For USB Installs

January 10, 2012 8 Comments

You receive the error “A required CD/DVD device driver is missing” when installing Windows 7 or Windows 2008/R2 from a USB device. Furthermore if you browse to install drivers you will see that your CD/DVD drive is actually installed successfully.

You are using a USB 3 Port

The error is very misleading; the problem is not that the CD/DVD device drivers are missing, it is that USB 3 drivers are missing. Most likely you have plugged your USB drive into a USB 3 port but the problem here is that Windows 7/2008/R2 doesn’t ship with USB 3 support. The solution is very simple; just plug your USB drive into a USB 2 port and start the install again.

Why does this happen?

The initial boot up will work fine but once Windows starts installing drivers it will fail for the USB 3 hardware. At this point the installation can no longer see the USB pen resulting in the error. By booting up on a USB 2 port Windows has the required drivers to continue the installation successfully. As for the “A required CD/DVD device driver is missing” error I can only guess this is because the install expects to be installed from the CD/DVD drive. Once it can’t load the drivers for the USB device it is as if the CD/DVD drive has disappeared resulting in the “A required CD/DVD device driver is missing” error.

Filed under Hardware, Windows 2008, Windows 7 Tagged with , ,

Moving Files on the Same NTFS Volume DOES Inherit Permissions

July 24, 2011 7 Comments

Most of you reading this will no doubt already have some idea of how file permissions are handled when moving or copying files to and from NTFS drives. The following behaviour is expected:

  • When copying a file from one NTFS volume to a folder on another volume the file inherits the permissions of the destination folder.
  • When copying a file from one folder to new a folder on the same NTFS volume the file inherits the permissions of the destination folder.
  • When moving a file from one NTFS volume to a folder on another volume the file inherits the permissions of the destination folder.
  • When moving a file from one folder to new a folder on the same NTFS volume the file retains the permissions. Read more of this post

Filed under Hardware, Windows 2008, Windows 7 Tagged with , , , ,

Shadow Copy 0×80070005 Access Denied

May 11, 2011 Leave a comment

There are different reason why you may get an access denied error 0×80070005. This particular one and the following fix is only applicable when the following is met:

  • Your operating system is Windows Server 2008/Vista. If it is Windows 7 or 2008 Server R2 then this fix does not apply.
  • You have no other problems at all with shadow copies/previous versions. It works perfectly fine accessing previous versions of all other folders except just one (or a few) folders.
  • UAC (User access control) is enabled. More info about UAC can be found here.
  • You are logged in as an Administrator who should be able to access these folders/shadow copies.

The error is caused because of a bug in Windows Explorer and how it handles UAC. It is exactly the same reason as to why you get an access denied message when trying to access certain folders you should have access to. In these scenarios you have given the administrators group full control of the folder, you are a member of this group but you still get an access denied message. See the following UAC access denied for the cause and fix. It talks about Explorer having problems accessing certain folders. As shadow copies/previous versions are launched through Explorer it applies to this also.

NOTE: In the article some of the fixes say to modify the permissions on the folders. This is not possible with shadow copies as the folders are stored in a snapshot. Instead you will only be able to apply the fixes that modify UAC behaviour (solutions 3 and 4).

Filed under Windows 2008, Windows 7 Tagged with , , , ,

Windows 7 Access Denied For Administrator

May 11, 2011 19 Comments

The Problem

You receive a Windows 7 access denied error when accessing a folder through Windows Explorer even though you have set the permissions correctly. You are an administrator and the administrators groups have full control over the folder but you can’t access it without Windows re-writing the permissions.

The cause of this is because of a new feature in Windows 7 called User Access Control (UAC). It is the combination of UAC and a bug in Windows Explorer that causes the access denied error.

The easiest solution is to simply disable UAC. If this is not possible (for security reasons) then read on for alternatives. Read more of this post

Filed under Windows 2008, Windows 7 Tagged with , , , ,

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