Windows 10: Any good apps to fix partition/filesystem problems that Chkdsk can't?

I have a very peculiar problem with my Windows partition. I recently copied the partition over from another drive and all seemed to have gone well until I realised none of my three defrag programs worked anymore, each fails with "Move failed, the parameter is incorrect" or something similar. I ran chkdsk (both GUI and CLI) and it detects errors that it can't fix due to the Windows partition being online. So I boot into a Win PE recovery OS and not only does Chkdsk find and fix errors but the defrag program on the disk can defrag the partition. I thought the problem would now be fixed thanks to the magic of Chkdsk but it re-manifests every single time I re-enter Windows.

There is some sort of issue with the partition itself that Chkdsk can't fix though it thinks that it fixes it each time I run Chkdsk from another OS. I did manage to get Chkdsk to function once from inside the dodgy partition and it failed with an error that sounded very similar to the ones that the defrag programs gave me "Cannot perform selfheal", which I took as both Defrag and Chkdsk not being able to alter something.

If anyone has ever seen anything like this and has any ideas for me then that would be fantastic, but for now I would just like recommendations of apps I can use to try and diagnose what the problem is and how to fix it.

PS. Anyone telling me to reinstall Windows will be ignored, if I wanted simpleton advice I would have went to answers.microsoft.


Thx
Rob


Windows 10 Pro 20H2 19042.844

:)

 

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Raw Partitions

Hi Everyone!

A few days ago, I accidentally told the Ubuntu Installer to wipe my Windows 10 partition. I quit the installer, but my partition is now RAW.

What is a RAW Partition?

In Windows, partitions with an unknown filesystem (like my Ubuntu partition) are marked as RAW. In this case, Windows was unable to recognize the filesystem type. Lets say your Windows partition filesystem gets corrupted badly. Windows would mark
it as RAW. So, in short, a RAW partition is
not a filesystem, but an error of the partition.

What happens if you have a RAW partition?

It depends. If your primary partition is RAW, Windows will not boot. Period. If an external storage device or other partition is RAW, Windows will ask you to format it. You will not be able to get any data off of this partition.

Is this error fixable?

It seems like it also depends. If your partition's filesystem got really messed up, then no. This will happen:

> The type of this file system is RAW.

> CHKDSK is not available for RAW drives.

However, I have seen reports of people fixing a RAW partition. This is what happened:

> The type of this file system is NTFS

> The first NTFS boot sector is unreadable or corrupt.

A little suprising, but this is good. It means that your partition is fixable. The first sector is what caused the RAW error.
p.s. I used chkdsk to get these errors

How do you fix this error.

First off, you will probably need a Windows Installer device.

If you can get to a command line, skip this part.

Boot from the installer.

Set your keyboard, mouse, etc. Click next.

Click Repair your Computer (bottom-left corner)

Click Advanced Options (or similar)

Now, first, try and use Startup Repair. If Startup Repair works, great! If Startup Repair fails, keep reading.

Open a command line.

Run the following commands in order:

> diskpart

> list volume

This will show you the RAW partition, and what letter it is.

> exit

> chkdsk /r /f D:

Replace D: with the letter from Diskpart.

You should get some errors at the beginning (first sector corrupt). Don't worry, it is actually fixing the second sector!

If that doesn't work, then you are in trouble, and should just reinstall Windows. Sorry

I hope this tutorial was useful. And also, please leave comments if you have another method that worked for you. Thank you!