Windows 10: Accidental deleted system reserved partition, Now windows 10 is isn't found in my C: drive

I was trying to format an old drive that came from anither device that no longer worked after I had recovered all of my data from it, I had put into my computer and accidentally selected the wrong drive partition as the old one came from a Nas and had many partitions, and ended up accidentally deleting the system reserve section at the beginning of my C:\\ drive.Now somehow everytime I boot my PC, it can't find an operating system on my C:\\ drive, and I instead have to select a different drive not the one I was formating which was already in my PC being used for extra storage, and as far a

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Deleting a "System Reserved" partition

Hello,

Thank you for bringing up your query on Microsoft Community.

We sincerely regret for the inconvenience caused.

Please be assured that we will do our best to help you.

• 
  What happens when you try to delete the System Reserved Partition?
  
• 
  Do you receive any error code/message? If yes, what is the exact error code\message you get?
  

I suggest you to start your computer in safe mode with Networking and check if you are able to delete the System Reserved Partition.

Safe mode is a diagnostic mode that starts your computer in a limited state. Only the basic files and drivers necessary to run Windows are started.

Refer the article below:

Start your PC in safe mode in Windows 10

http://windows.microsoft.com/en-in/windows-10/start-your-pc-in-safe-mode

The system reserved partition contains boot files, you may create a recovery drive before deleting it.

Hope it helps.

Kindly let us know if you need any further assistance with Windows. We are happy to assist you.

 

W10 System Reserved Partition Error

Hi,

Have you tried all the suggestions above? If not, we suggest the resolution provided above. We also suggest that you follow the steps on this link:

“We couldn’t update system reserved partition” error installing Windows 10.

Let us know how it goes.

 

Creating System Reserved Partition and Deleting Windows 7

@TraceyW,

Here you go. I set up a hard drive with a Windows 7 and Windows 10 partitions (and installations). The disk is MBR. The Windows 7 partition is set to active and the computer boots from it in Legacy BIOS mode:





I verified the computer will indeed boot into both Windows 7 and Windows 10. I booted into Windows 10. I installed and used MiniTool Partition Wizard Free to delete the Windows 7 partition:





^^^^Click Yes and make sure to click the Apply button on the menu bar.

Then I opened a Command Prompt (Admin) - "Run As Administrator" Command Prompt and did the following commands:

Code:

NOTE: your disk number will be different than mine. Probably 0.

After running the above commands, this is my final disk layout:





The computer boots straight into Windows 10 now. From here you can go back into MiniTool Partition Wizard Free. I would suggest removing drive letter T: from the newly created "System Reserved" partition. You can resize the OS partition to fill the unallocated space in front of (or behind) it. If the unallocatd space is in front - MiniTool will want to restart the computer to finish it.

I sincerely hope this answered everyone's doubts.