I have tried to install Windows 8 Pro over Windows 7 Ultimate, but the installation failed to install the new OS and even to restore the old one.
I get the following error:
File: \EFI\Microsoft\Boot\BCD Description: an error occurred while attempting to read the boot configuration data
- Laptop is an ASUS N76VZ
- HDD0 (1TB): openSUSE 12.3 in EFI boot mode
- HDD1 (1TB): Windows 7 in EFI boot mode
- BitLocker suspended on
C:\before trying to install Win8
- Other partitions are TrueCrypt protected
Data is almost back up. I won't lose much by formatting, apart from hours of software reinstallation
Steps to create the problem
As I said, I tried to install Windows 8 pro upgrading the existing Windows 7 Ultimate. I started setup from Windows, suspended BitLocker as requested, uninstalled a few Intel USB 3.0 drivers that are not compatible with Windows 8 and let setup go.
When rebooted, it first started with the new Windows logo, then rebooted, as expected, an then the Windows Boot Manager screen appeared. Three menu options available:
- Windows 8
- Windows installation
- Windows 7
I tried to boot 8 for the first time, but it rebooted shortly after. Then I chose Windows installation and that time the Windows installer told me there was an error during the installation. OK, no problem, I can try again...
But now I can't boot Windows 7 anymore.
What I have tried
I found this article
I tried to boot from Win7 DVD (using UEFI) and use automatic system restore option. These failed (method 1 of linked article). I tried to open console and use
bootrec /rebuildbcd. It detected D:\Windows as installation directory but the (translated into English) error is the following when I press [Y]es
Unable to identitfy the requested system device. More devices correspond to the identification criteria without distinction.
I guess that this refers to the Linux installation.
I would like to ask how to repair EFI boot partition for Windows 7 given that BitLocker is suspended
How to fix that?