This error indicates that you cannot access your operating system.
Similar error messages includeoperating system not found,missing operating system,boot rig not foundand so on.
Everything will be much easier if you resort to some third-party backup software.
When it comes to backup, there are various powerful backup programs in the market.
Which one is worth a shot?
To back up your data on a Windows machine, MiniTool ShadowMaker is a top choice for you.
This professionalWindows backup softwareoffers a 30-day free trial that allows you to enjoy almost all the services for free.
Heres how to do it:
Move 1: Create a Bootable Media
Step 1.
Prepare a writable and readable USB flash drive and insert it into a working computer.
Download and install MiniTool ShadowMaker on this working gadget and launch it.
In theToolspage, click onMedia Builder.
SelectWinPE-based media with MiniTool plug-inand then choose the target USB flash disk to start the creation.
In theMiniTool PE Loaderscreen, selectLaunch MiniTool ShadowMaker.
InDESTINATION, you could select a path to store the backed up files.
Here, an external hard drive or USB flash drive is recommended.
Click onBack up Nowto start the process immediately.
If you want to retrieve the data on the hard drive, the instructions are also very simple.
See this guide -How to Recover Data When PC Won’t Boot (Works 100%).
How to Fix Non System Disk or Disk Error on Windows 10/11?
After the safe ejection, reboot your gear to verify if none system disk or disk error persists.
ensure that the cable connecting the HDD to the motherboard is securely fastened.
Luckily, it is easy to set the right boot priority.
Heres how to do it:
Step 1.
Power off your rig.
After a while, press thepowerbutton to turn it on and press the BIOS hotkey repeatedly.
The BIOS hotkey might vary from manufacturer to manufacturer.
For most computer brands, pressDelete,F2,F12, orF10.
Afterentering BIOS, press thearrow keysto locate theBootorBoot Prioritytab and tapEnterand then set the right boot order.
PressF10to save the changes and exit.
Shut down your box.
For a laptop, remove the battery.
Remove the system disk (HDD or SSD) from the computer.
Reinstall the system disk.
Reinsert the battery and power on your rig.
How to replace laptop hard drive and reinstall operating system?
It is an easy job and you could follow this detailed guide to do the work.
This inbuilt tool can check for faults and errors within the whole computer system and fix them automatically.
To do so:
Move 1: Create a Windows Installation Disk
Step 1.
Visit theWindows 10 Downloadpage and hitDownload NowunderCreate Windows 10 installation media.
(For Windows 11, go tothis pageand hitDownload NowunderCreate Windows 11 Installation Media.)
Double-press the executable file and accept the terms.
TickCreate installation media (USB flash drive, DVD or ISO file) for another PCand pressNext.
Select language, edition, & architecture and then hitNext.
TickUSB flash driveto select a USB drive and hitNext.
After the process is done, hitFinish.
Move 2: Perform Startup Repair
Step 1.
Select language & other preferences and then hitNext.
In theWindows Setupscreen, hitRepair your machine.
Go toTroubleshoot>Advanced options>Startup/Automatic Repair.
Is Windows Automatic Repair not working?
It can also check the disk for errors and then fix them.
Many issues like none system disk or disk error can be fixed by this tool.
To do so:
Step 2.
In the command window, typechkdsk C: /fand hitEnter.
The process might take some time.
If the command detects any problems, it will venture to fix them.
C:refers to the hard disk where Windows is installed.
The/fparameter can find and fix any errors on the hard disk.
Wonder using CHKDSK /f or /r to check & fix hard disk errors?
Check difference between CHKDSK /f and CHKDSK /r.
Learn how to run CHKDSK /f /r Windows 10.
Fix 7: Repair MBR
Step 1.
Boot your gear from the Windows installation disk.
When you see theWindows Setupscreen, pressShift+F10simultaneously to openCommand Prompt.
In the command window, execute the following command one by one to repair the Master Boot Record corruption.
bootrec /fixmbr
bootrec /fixboot
bootrec /rebuildbcd
Step 4.
Reboot your system to find out if none system disk or disk error still exists.
Fix 8: Set the System Partition Active
Step 1.
OpenCommand PromptinWindows Recovery Environment.
Step 3. initiate the two commands one by one and hitEnter.
list disk
select disk 0
You should replace0with the actual number of your system disk.
Typeactiveand hitEnterto activate the partition.
When the process completes, closeCommand Promptand hitContinueto exit WinRE.
If you have more questions or suggestions about our software, contact us via[email protected]!
