Mbrwork can be used to repair or rebuild a partition table when it becomes damaged by a virus, Partition Magic crash, power failure, or other unexpected event. Of course make a backup of all data before testing this. If it's an emergency situation then proceed.
Default screen after 1) Backup First Track.
6 steps to recover a lost partition
Option 7: Choose the hard drive to work on (HD0 is primary master).
Option 1: Backup first track
Option 4: Reset the MBR to zero
Option 3: Reset EMBR to zero.
Option A: Recover MS Partitions (see fig 2)
Option 5: Install standard MBR code (you may reinstall a boot manager after)
See explanations below.
After option 4:) Reset MBR to zero Option A) added to menu (notice partition information is also zeros)
MBRWork Menu
1) Backup First Track
This is your safety valve to put things back as they were