Reasons of Non System Disk or Disk Error
5 Solutions to Fix Non System Disk or Disk Error
Solution 1: Check IDE or SATA Cable
If this way doesn’t work, it’s suggested to replace the old IDE/SATA cable with the new one. After that, if the “non system disk or disk error” still appears, this may be caused by the problem of boot files. Please move on to the following methods.
Solution 2: Remove Non System Disk from the PC and Change Boot Order via BIOS Setup
If there is CD/DVD/USB connected to computer, please remove all of them and hold down the power button until the PC shuts down. Then power on the PC again. After that, if you could get into the system properly, please change the boot order in BIOS setup.
Please press the correct hot key to enter the BIOS according to the brand of your PC.
Solution 3: Update Active Partition via Command Prompt
System partition on the hard drive should be a primary partition marked as active. It includes boot files of the operating system. When the PC starts, it usually boots from the active partition. If the system files can’t be found when the PC boots, the “non system disk or disk error” issue will occur and you won’t get into the system. Here’s how to update active partition via command prompt.
- list disk
- select disk 0 (System drive is disk 0 by default. Please enter your correct disk ID.)
- list partition
- select partition 1 (System partition is partition 1 by default. Please enter your correct partition ID.)
Solution 4: Fix MBR/BCD
- bootrec /fixmbr
- bootrec /fixboot
- bootrec /rebuildbcd
Solution 5: Transfer Important Files and Reinstall the System
If none of the above solutions can fix your “non system disk or disk error” issue, you could choose to reinstall system. But please note that reinstalling system will remove all data on the PC. It’s suggested to use the third-party to quickly transfer important files before you install the system. And it’s recommended to use professional system rescue tool, Renee PassNow. Many users have used Data Transfer function in Renee PassNow and successfully transferred important files without data loss.
Step 1: Download and install Renee Passnow on any other workable computer.
Step 2: Launch Renee Passnow. Create bootable media with USB/CD/DVD.
Step 3: Boot the target computer with the created bootable media.
Step 4: After loading into the main interface of Renee Passnow, please select “Data Transfer” function.
Step 5: Select the original disk and target disk. And drag the target files to the target disk directly.
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