Thread: Invalid / Non System Disk error.

What is an Invalid / Non System Disk error which apperars on my computer desktop? Will it result in creating a problem for my computer? Do advise me some measures?

First make sure that there is no floppy diskette or CD is present in the computer. If there is a diskette or CD is in the computer which is not bootable for your computer and may try to boot from that diskette or CD which is causing this mistake message in your computer.

You can also check the BIOS is set properly or not. Following is the procedure for setting it properly.
1. Firstly make sure that your hard disk drive is setup and detect correctly in BIOS. You're computer may be supposed to list a hard disk drive installed moreover beneath the main page or the drives page in BIOS. If BIOS indicate that the drive is not installed or not detect properly then skip to Hard Disk drive is bad or is not connected properly to it.
2. Also verify with the boot options is properly set in BIOS, almost all the BIOS setups must have an option specifying how your computer will boot. For e.g.
- Floppy drive
- CD drive
- Hard drive

3. Let up your BIOS to evasion values. Many BIOS will allow the users to reset the values to the defaulting settings. If you've tried the this options with no achievement then try resetting the BIOS in your computer.

If you still encountering the same issues in the computer, confirm the links are correctly associated to the computer if the hard drive was newly installed or the computer was moved by you recently. At last, if all the connections are setup correctly and then it is likely that the hard disk drive is bad and it will need to be replaced as early as possible for avoiding the error.

It is more likely that the bootable file may be misplaced from the hard disk drive and creating the issue. Following are the steps that will help you in resolving your issue towards it.
Users running Windows 95, Windows 98, and Windows ME in computer.
1. Boot from a bootable floppy diskette.
2. At the A:\> type fdisk <press enter>
3. If you receive a message no fixed disk present, read Hard Disk drive is bad or not connected properly.
4. If you are able to get into fdisk, choose option 4 to display the partition information. In the partition information, if the System is listed as FAT16 or FAT32 then continue to step 5. If you have a message indicating no partitions defined, no information is on your hard disk drive and you will need to create a new partition.
5. If you see FAT16 or FAT32 in fdisk press the ESC key until back at the A:\>
6. Once at the A:\> type, sys c: <press enter> (only do this command if you are using the same operating system that this diskette was created on).
7. This should return a message 'System Transferred', if you receive bad command or file name and have verified you have typed the command properly, you will need to obtain a bootable diskette with the file sys.com on it.
8. If system was transferred successfully, reboot the computer and issue should be resolved.
Windows 2000 and Windows XP users
1. Boot from your ERD, your bootable Windows CD, or your bootable restore CD.
2. Once boot then attempt to repair the Windows. If you're able to repair Windows remove the disks and reboot the computer.
All users
If you have tried the above but no success then try erasing the hard disk drive and beginning over.