Win7 can not upgrade SP1 error prompt 0x800f0a12 how to do?

Some Win7 users have encountered problems that SP1 installation can't do when upgrading SP1. So, how to fix this problem? The following are specific solutions.
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Win7 can not upgrade SP1 solution:
In the search box, enter "ldmg; compmgmt.msc"; open the computer management interface, select Storage - Disk Management, check whether the partition of Windows 7 is Include the “activity” attribute, if not, right click on the partition and select “mark the partition as active partition”.

After finishing, close the computer management window and other applications, start running the Windows 7 SP1 installer or update directly through Windows Update. At this point, this error will not occur again.
After all the SP1 installations are completed, the original active partition can be reset to active status (if needed) via DISKPART.
This is the Win7 can not upgrade SP1 solution, users in need can try this method to repair their own computer.