Hello!This time with Windows Update0xc1900104,0x800f0922I would like to introduce how to deal with an error.
I think this phenomenon is a slightly rare pattern as an example of failure when executing the function update program (: FU).After all, I've been working on Windows Update for a long time, but I've never encountered such an event.
To be honest, I'm not sure why this happens when I use it normally, but I will introduce it as a trouble case.
Event
When I execute FU from Setup.exe, the following screen "The system reserved partition could not be updated." Is displayed and it fails.
It seems that the same message or error code may be returned even when upgrading or updating with Windows Update.
Cause
Normally, when you install Windows 10, you will have a partition called "System Reserved" of about 100MB in the invisible area of the hard disk.
It seems that the cause is that some files are placed in this area and the capacity is being compressed.
As a test, if you look at the contents of the system reserved partition of the computer that occurred ...
It was filled with mysterious files like this.
If you remove this, it looks pretty good!
Solution
① Start the command prompt as an administrator
First, launch the command prompt with administrator privileges.
After pressing Windows key + R
cmd
And hold down the Shift and Ctrl keys at the same time and press the Enter key.
Then, the following User Account Control screen may appear, so click "Yes".
If it appears in the title bar as C: \ Windows \ system32cmd.exe, it is running as an administrator.
② Start Diskpart and attach a drive letter to the system reserved partition.
In order to view or tamper with the contents of the system reserved partition, you must first attach a drive letter so that you can access it.This time, let's attach it as a "Y" drive for the time being. (If you already have a Y drive, use a different alphabet)
At the command prompt you just started
diskpart
And press Enter.Then, the beginning of the command prompt will change to "DISKPART".Diskpart is now ready to start.
Then to display the list of partitions
lys vol
And press Enter.
A list of partitions is displayed like this, and some of them have a size of 100MB. (Volume 3 in my case) This is the system reserved partition.
Then, "Volume3Let's add a drive letter "Y" to ""
sel vol 3 assign letter = Y
If you execute the above command and complete it normally, it will be as follows.
If you "lis vol" again here, you can see that it is the "Y" drive.
This completes the work on Diskpart. "Exit" to return to the command prompt.
③ Delete unnecessary files at the command prompt
Finally, check for unnecessary files and delete unnecessary files.
Basically, you don't need anything other than the EFI folder, but if you accidentally delete it, it may not start, so it's a good idea to make a backup.
First of all
Y:
Type to move to the Y drive.
here
dir
When you enter, a list of files will be displayed, so let's delete unnecessary files.
Use the "del" command to delete any unnecessary files found.
del [filename you want to delete] / f
It depends on the situation, but I think there is no choice but to erase them one by one. (If it has the same extension, you may be able to delete it with * .dat etc ...
If you can delete it cleanly, you can make it only the "EFI" folder as shown below.
Now if you run the update again, it won't fail with the same error.
Afterword
This time, I introduced the solution for the case where the reserved partition is compressed and the update of Windows fails.
In my case, the captured image of the BIOS was filled up for some reason, and upon closer examination, I found that the model had such a function.
However, it should be output to the C drive, so it is a mystery why this happened ...
For the time being, I was able to solve it by this method, so I would be grateful if you could refer to it as an example.
I hope it helps you.
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