Summary
This article describes how to recover a system when it fails to boot after a BMR. This condition may occur for AROS restore (Block restore from DPX open storage) of UEFI-based servers.
Symptoms
If the BMR fails to run the post-restore scripts, then the system may be unable to boot and the following message is displayed:
The Boot selection failed because a required device is inaccessible.
The BMR post scripts performs the following configuration functions:
- Configure drive letter.
- Set the active partition.
- Adjust the MBR or EFI boot configuration.
- Adjust hardware configuration.
- Reset the CJ.
Resolution
It is possible to manually configure a system if the BMR post script fails. In such cases, use the following procedure to recover the system:
1. Boot the system using the BMR ISO. Wait for the GUI to open.
2. From the File menu, select the Command prompt.
3. Type Diskpart. Enter commands as shown:
diskpart> select disk 0
diskpart>select partition 1
diskpart>active
diskpart>list volume
4. Ensure that the drive layout is correct. To make changes to the drive layout, use the remove and assign commands, for example:
diskpart>select volume 1
diskpart>remove
diskpart>assign letter=C:
5. Once the drive layout is correct, exit diskpart:
diskpart>exit
6.From the CMD prompt, run the appropriate BMR/EFI script:
For Windows 2008+ and BIOS firmware
scripts\bcdedit_bmr_script.bat
For Windows 2008+ and EFI firmware
scripts\bcdedit_efi_script.bat
For systems earlier than Windows 2008
scripts\fixboot.bat 0 1
7. Reboot the system