> Am 17.01.2025 um 15:28 schrieb Paul Dufresne <dufres...@zoho.com>: > > Fdisk does not add a valid partition signature when creating a partition?
The first sixteen sectors of a newly created partition are filled with value 0xf6. So there is no valid volume boot record after the partition is created. > You means that is the job of format to add the partition signature? Correct. > But thinking about it, I realize that before fdisk, there were no valid MBR > signature... after fdisk there is one, so it is indeed BIOS job to launch MBR. Correct. > Still... I don't see why 1.3 would not write "partition signature != 55AA" > after fdisk reboot... and rather boot with CDROM menu. Maybe the 1.3 installer does not make a partition active and the BIOS is smart enough to detect this? Can you FDISK it to see if there is an active partition? Or better yet, can you please test the following: After partition is created under the 1.4-RC1 installer, issue an FDISK 1 /deactivate on command line and see if the CD-ROM boot occurs? Bernd _______________________________________________ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel
