Cannot insert a disk image on a drive after a game is running about dosbox-x HOT 9 CLOSED

I agree that, given the current restrictions, this is the best approach.

from dosbox-x.

Insert an empty disk in drive B and swap it afterwards.

from dosbox-x.

Insert an empty disk in drive B and swap it afterwards.

That didn't solve the problem. Wrestle Angels 1 still doesn't boot even if the image inserted on drive B: is blank.

from dosbox-x.

Working just fine on Windows, 10.06 release (didn't test nightly builds).
First boot the game with disk A and B mounted, and replace disk A with C when instructed.

from dosbox-x.

@maron2000

Oh my, this is how the sanity goes out of the window. 😅 I tried some combinations until I could find why it worked for you and not here.

The boot bug happens if you insert the disk image on drive B: before you insert the drive A: image and then boot from the drive A:.

Steps to reproduce the behaviour:

1. Boot dosbox in PC-98 mode
2. Insert the diskB.fdi disk image on drive B: using the Drive menu
3. Insert the diskA.fdi disk image on drive A: using the Drive menu
4. Select the menu Drive->A->Boot from drive

Result: The PC-98 will freeze with a horrible continuous beep and an error message "no system files" will be shown.

If I insert the drive A: image first it boots correctly.

from dosbox-x.

Ok. So we are now on the same track.
For the time being, don't mount drive B first LOL.

from dosbox-x.

It seems from the source code that drive B is intentionally allocated as the boot drive (drive number 0, BIOS 0x00) if mounted in advance of drive A.
I think this is due to that PC-98 can boot from Drive B if drive A is empty, but since DOSBox-X assumes drive A only as a bootable floppy, maybe we should neglect booting from drive B.

cited from dos_programs.cpp L4822

   else if (IS_PC98_ARCH) {
        //for pc-98 machines, mount floppies at first available index
        for (int index = 0; index < 2; index++) {
            if (imageDiskList[index] == NULL) {
                return AttachToBiosByIndex(image, index);
            }
        }
    }

from dosbox-x.

While the PC-98 can indeed boot from the drive B:, AFAIK it will only do so if there's no bootable disk on drive A:

IOW, regardless of the order that the disks were inserted, the PC-98 will always boot the first disk it finds, from the lowest drive letter to the highest.

from dosbox-x.

Yes, and as I mentioned above, DOSBox-X does NOT support booting from Drive B (in other words, boot b:) even if PC-98 can, I think we should always boot from Drive A on DOSBox-X even if Drive B is mounted first, since it requires a bunch of fixes while very limited (or even no) benefits.

So if you mount Drive B first, I plan it to be mounted to drive number 1, and cannot be booted even if drive A is not occupied.
After that if you mount Drive A, you can boot from that drive.

A screenshot of the planned fix.

Edit: edited some explanation
Edit2: show a example of planned fix

from dosbox-x.