When updating Windows, either with monthly updates or feature/version updates you may run into a problem that says "We couldn't update the system reserved partition."

Cause: There is not enough free space in the system partition to perform the upgrade.  (This is SYSTEM partition, NOT free space of your C: drive).

Solution: Delete unnecessary files from the system partition.

Steps to solve are below. Your results should look similar to those in the screenshot.  If you are unsure of any of the steps please contact the Solutions Hub.

Follow the steps below and press Enter after each step that says type:

Assign Drive Letter to System Partition

1. Open elevated command prompt

2. type Diskpart

3. type List Disk to find the disk number of the primary hard drive (usually Disk 0)

4. type Select Disk # (# is the number of the of disk ("select disk 0")

5. type List Partition to find the 100mb system reserved partition (usually Partition 1)

6. type Select Partition # (# is the number of the partition ("select partition 1"

7. type Assign Letter=Z (or any other unused letter from H to Z)

8. type Exit to exit out of diskpart.
 

Delete Files

In the normal elevated command prompt:

9. type Z: (Z is the letter assigned in step 7)

10. type CD Z:\efi\microsoft\boot (Z is the letter assigned in step 7)

11. type del fonts\*

12. type Y when prompted
 

Remove Drive Letter

13. type Diskpart

14. type Select Disk # (# is the primary disk number (same as step 2)

15. type Select Partition # (# is the number of the system partition (same as step 6)

16. type Remove Letter=Z (Z is the letter assigned in step 7)

17. type Exit

18. Reboot the computer