Win10 Fall Creators Update Fails 0xc1900201

[JohnKroeger]

Noticed 1709 was failing error 0XC1900201- Reserved Partition is FULL

In Disk Manager No partition has less than 50GB so I assumed it was a WIn10 update issue

I ran Troubleshooter for Update - no help

I Verified the image with DISM and cleared out the DIstributedSoftware folder - no help

I used DskChk to check for errors - none found

I used system Diagnostics on the disk - no errors

I checked the BIOS to see if it is in Legeacy mode - no issues found

HP support could not find anything in the internal Db

I found an article on the web that taked about second disks being registered and partitioned with a "hidden" Reserved Partition that is tiny ~128Mb, and that with 3rd party partition tools it could be extended. Using MiniTool Pro I indeed found a tint Reserved partition on the 😧 drive that is indeed full. NO partition on C: is full. SO I am assuming this is the problem. However the partition can NOT be extended. 

HP can only suggest reformating the drive and reloading everything. Has anyone else experienced this problem and found a solution?

[Rfulton01 · Accepted solution]

 they this..

https://support.microsoft.com/en-us/help/3086249/-we-couldn-t-update-system-reserved-partition-error...