“We couldn’t update system reserved partition” error installing Windows ...
To upgrade your device, you'll need to free up 15MB of space on the SRP using the appropriate method below, and then try the upgrade again. If you're updating Windows 10, you need to free up 13MB. Press the Windows key + R. In the Run window that comes up, type diskmgmt.msc and press Enter.
Windows File Recovery - Microsoft Support
Use this app to try to recover lost files that have been deleted from your local storage device (including internal drives, external drives, and USB devices) and can’t be restored from the Recycle Bin.
Perform an offline system update | Xbox Support
Learn how to update your Xbox console offline.
How to format a USB flash drive or external storage device to NTFS on ...
Learn how to format a flash drive to NTFS on a Windows PC.
Find lost files after upgrading Windows - Microsoft Support
In the left-hand navigation panel of the window that opens, select This PC. In the Search This PC text box found in the top right-hand corner of the window, enter in the file name of a missing file. If the files still can't be located via search and a temporary profile isn't being used, use the troubleshooter to fix problems with Search.
Uninstall or remove apps and programs in Windows - Microsoft Support
There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled. You can try to repair a program first, if it's just not running correctly.
Perform an offline system update | Xbox Support
Learn how to update your Xbox console offline.
Recovery Drive - Microsoft Support
Follow these steps to reinstall Windows using the recovery media: Start your device from the USB drive that was created with Recovery Drive. The process to boot from a USB drive may vary by manufacturer, so refer to your device's manual if needed.
Backup, restore, and recovery in Windows - Microsoft Support
To use Windows Backup, you need to sign in with your Microsoft account. This ensures that your backed-up information is stored securely in the cloud, making it accessible from any device you sign into with the same account.
Troubleshoot “Something went wrong” startup errors on Xbox
Accessible help and resources to get your Xbox questions answered. Troubleshoot errors from the “Something went wrong” startup screen on Xbox.