Boot Record Signature AA55 not found
Boot Record signature AA55 not found.
Alternatively, you may receive such error messages as:
- Non-System or Non-Bootable Disk.
- Strike F1 to retry boot
- OS Loader 4.0
Boot Record signature AA55 Not found, xxyy Found
xxyy may vary depending upon the BIOS manufacturer.
This issue could be caused by any of the below possibilities.
- Computer Virus
- Malfunctioning hardware
Overall, the workaround to this issue would be to recreate the master boot record. However, it is important to note that because of the potential possibility of a computer virus such as the Monkey MBR virus, doing this command could cause possible data loss or additional issues. Verify that the latest version of your virus scanner is installed on the computer and that you have verified no viruses exist on the computer.
Additionally, you may consider backing up the data on your hard drive.
To recreate the master boot record, boot from a bootable floppy diskette and at the prompt type:
fdisk /mbr <press enter>
This should return you to the prompt with no message
Once back at the prompt reboot the computer and the issue should be resolved.