NOT DOS DISK ???

[Piru]

Yes. "Lock SYS: On" will write protect your system partition.

I'm afraid this does not help at all. Lock use filesystem level write protection, that is, it does not protect for exec device driver level writes. The only way disk can get NDOS is by direct writes via device driver, normal filesystem operations don't trash the disk.

Make sure the MakeCD settings are not set to hold the image file on block device located on >4gig area (global settings/Further settings/Other settings/Block medium). I'm not sure but I'd imagine MakeCD can't handle >4gig areas.

[Piru]

browny:

Check that all filesystems used handle >4gig properly (that is, they have either NewStyleDevice (NSD), TrackDisk64 (TD64) or DirectScsi (DS) support. Remember that having the correct file in L: is not enough, you need to check that RDB has the correct filesystem(s) aswell.

Permit ExAll() and Unprotect are not necessarily needed, but can be enabled for FFS V44/V45, SFS and PFS3.