does mean it needs a format again and partition with the bootable box checked or is there another round this??
First of all, is the partition set as bootable in WinUAE's prefs? I thought that overrode the Amiga boot info? (Not really sure, as I've only used HardFiles in UAE -- they're a lot easier to manage, and if you put them on a semi-new drive, they're a lot faster, too!)
Anyhow, on a real Amiga, I believe you can just open HDToolBox, pick the drive, pick the partition, choose the bootable option, be careful to change no other options, save the changed drive, and reboot. It may give you a warning, but so long as you don't do anything that changes the drive's geometry or partition sizes, the data should stay intact.
