Win7 system installation patch prompt 0x800f0a12 error how to do

Cause analysis: indicates that the installer can not access the system partition on the hard disk, which can not upgrade the file, so the SP1 upgrade failed, usually, Windows can access the partition (although you are in the resource management The partition could not be found in the device. However, in some cases, the system partition will be inaccessible after Windows starts.
Workaround:
1, first open the Run dialog box, then enter "ldkPART", enter;
2, then enter the "automount enable" command in the command prompt window that opens; Br>
3, then press Enter, you will see a series of information;

4, after loading, it will show that "automatically load new volume has been enabled".

5, finally restart the computer, and then install SP1 on it.