"0xc000000e The boot selection failed because a required device is inaccessible," occurs after restore of a Windows 2008 / 2008 R2 / Windows 7 with Veritas System Recovery

  • Article ID:100024606
  • Last Published:
  • Product(s):System Recovery


Windows 2008 / 2008 R2 / Windows 7 boots to a blank screen or to a boot error after a successful restore from Veritas System Recovery (SSR) or Backup Exec System Recovery (BESR) recovery. Error: Windows failed to start.


Error Message

Windows Boot Manager
Windows failed to start. A recent hardware of software change might be the cause.
Status: 0xc000000e
Info: The boot selection failed because a required device is inaccessible.






When installing Windows 2008 R2 from DVD, unallocated space is subsequently broken up into 2 partitions: One partition is a 100 megs in size, the other becomes C:\ system drive.  The 100 meg partition is a System Reserved Partition and remains unnamed (no drive letter is assigned). It contains OS boot files.

If this System Reserve Partition is not backed up or not restored properly during the recovery, it will result in a boot error. This can also occur if there is some sort of corruption in the Windows Boot Manager on the System Reserved Partition.

(See the related section below for tech note on how to backup hidden partition)

Note:  Although creating the 100 meg System Reserved partition is the default install behavior of Windows 2008 R2, it is possible to architect an install which omits the 100 meg System Reserved partition by manually partitioning and naming the C:\ volume prior to installing Windows 2008 R2 from DVD.  Some automated build environments can cause a Windows 2008 R2 OS to have only a single partition as well.

When the unnamed 100 meg System Reserved partition does not exist, the Windows 2008 R2 installation places the boot files onto the C:\ drive into a hidden folder called 'boot'.


Method 1:

Ensure the System Reserved Partition was backed up and restored as per the article:


Method 2:

Is the System Reserved partition and EFI partition? If yes, refer 000005118

Method 3:

Repair the current OS using the Windows 2008 / 7 DVD

1 Boot to the Windows DVD

1. Select Next > Repair your computer

2. Select Next > Command Prompt

3.  Change directory (cd) to X:\sources\recovery, then type StartRep.exe  to launch a quick automated startup repair utility which corrects boot environment values. This step may require more than one attempt and should be repeated a couple of times if the first repair fails.

4. If step 3 fails, open the command prompt and type bcdedit. This will display the values for Windows Boot Manager.

5. Review the values for Device. Is it set to unknown, as shown below? If so, proceed to step 6.

6. At the command prompt, type the following commands (c: is the default system partition. If you original partition was another drive letter, this value can be set to that drive letter):

bcdedit /set {DEFAULT.EN_US} device partition=c:

(press enter)

bcdedit /set {DEFAULT.EN_US} osdevice partition=c:

(press enter)

bcdedit /set {BOOTMGR.EN_US} device partition=c:

 (press enter)

7. Reboot the system after removing the OS disk.


Applies To

Windows 2008 R2 / 2008/ 7

SSR 2011 / BESR 2010

Related Articles

Backing up the System Reserved Partition (hidden) in windows 7 and windows 2008 R2 using Backup Exec System Recovery(BESR) 2010

Windows 7/2008 R2 failed to boot with Windows Boot Manager error 0xc000000e after performing a disk signature change.

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