At first I thought it's only WinX68k problem. But then I've tried XM6 (many different versions like "i" or "TypeG") and nothing changed. On WinX68k DIM files are usually ejected from virtual drive as soon as the emulator tries to save something to them or there is a typical system error message (abort, retry, ignore). Other formats (XDF or NFD for example) stays in drive but still nothing is saved. Tested on Aquales (it should save before the levels), Akazukin Cha Cha Cha (error message while trying to save scores), or Etoile Princesse (user floppy is formatted without any problems, of course only if it's not DIM, but nothing is saved). There are no problems with saving to HDF files, games are installing without any problems. Due to this strange circumstances many games behave very strangely - for example Battle Unit II. I think it tries to save something to floppy image after starting the game, but it can't. Then it shows a message in japanese and... the outro and credits starts to roll.
Can anybody help me with that? Maybe I'm once again missing some BIOS or something is not right with my emulated machine (not the emulator options!) settings?
There is also
this old problem...