Try downloand this free software:
partitionwizard
Install the free software and select the drive letter for your external drive.
Click on Disk in the top menu
and select Rebuild MBR
Click...
Type: Posts; User: tnt1
Try downloand this free software:
partitionwizard
Install the free software and select the drive letter for your external drive.
Click on Disk in the top menu
and select Rebuild MBR
Click...