Unable to install Windows Cumulative Update on BIOS system
On BIOS systems, Windows cumulative updates may fail with the error We couldn’t complete the updates. Undoing changes. Don’t turn off your computer. In such case, while in Windows, you need to set the Windows partition as active.
C:\> diskpart
DISKPART> list disk
DISKPART> select disk number
DISKPART> list partition
DISKPART> select partition number
DISKPART> active
DISKPART> exit
After successfully installing the Windows update, mark back your Linux partition as active, using commands above.