Windows 7 Service Pack 1 (SP1) was released to MSDN and Technet users and will be shortly available for general public. In case you have tried installing SP1 and encountered the Error: 0x800F0A12, then this article will help you solve them. If you receive error “0x800F0A12” when trying to install Service Pack 1 (SP1) for Windows 7 or Windows Server 2008 R2, it means the installer can’t access the system partition of your computer’s hard disk to update files. Microsoft has detailed on how to solve the issue.
Although the partition is accessible, there might be some situations where it is not accessible;
- The system partition isn’t automatically mounted, or made accessible to Windows, during startup.
- A hard disk containing the system partition was removed prior to beginning SP1 installation.
- Windows is running on a storage area network (SAN), and access to the system partition has been disabled.
- A disk management tool from another software manufacturer was used to copy (or clone) the disk or partition on which you’re trying to install SP1.
In case the system partition is not automatically mounted, then users can run the command prompt in administrator mode and run the command mountvol /E. More details on how to fix the problem is available here.
This does not fix the problem when you have a triple boot machine and are using GRUB as the boot loader. You need to somehow disable grub and boot straight into Windows again for this to work (I think it will work), but I do not know how to do that.
Can anyone help?
I have 2 computers with Linux + Windows. I am having problems with just 1 computer. The problem is not the Grub.
@ Emanuil :
If you want to start straight to Windows you must mark its partition as ‘active’. Use Paragon Partition Manager or any other of sort.
However, this will not work if you have GRUB installed on MBR, but it should if it’s on Linux partition.
I have installed GRUB on Linux, rather than MBR and I already tried to perform a fix onthe MBR,which just resulted in “Missing Operating System” message. I had to re-install the GRUB in order to fix that…
I will try the software that you mentioned and see if that helps, but I think it will just result in the same message again.
Thanks for the info and I will let you know how it goes.
Just tried to set the partition as active, but I am not “allowed” to do so for some reason. The Partition Manager uses says that my MAC install is the Active partition and would not let me change that. Please see the image at:
http://tinypic.com/r/2akb9tj/7
Do you have any other suggestions???
Thanks,
E.
What would that /E mean? target drive letter?