No, there is no config.sys there either. Sorry I don't have bochs installed. I just downloaded the source, and it fails to compile out of the box, seemingly requiring Carbon. The pre-compiled Mac OS X binaries seem very old and don't seem to run.

No ... no IBMDOS.COM nor IBMBIO.COM, not as a hidden file, nor is there even a record which would indicate that a file with that name existed at any point in time and was subsequently deleted.

Please post it (hex dump). 00000000 eb 2e 90 52 4d 58 24 20 33 2e 33 00 02 01 01 00 |...RMX$ 3.3.....| 00000010 02 e0 00 40 0b f0 09 00 12 00 02 00 00 00 00 00 |...@............| 00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 |................| 00000030 bc 00 7c 56 1e b8 c0 07 8e d8 b8 40 …

Yes, it has a boot block on it. I only ever used the floppy that was imaged to create the floppy image file to boot a 386 PC-compatible. I cannot find Ultima V named on the link you posted but it is listed at http://www.dosbox.com/comp_list.php?showID=769&letter=U as being supported. It does work if …

Well there does not need to be a DOS on the floppy in order for it to boot ... it can rely purely on BIOS calls for its I/O. However, the floppy is in standard MS-DOS 1.44MB FAT format, so there must be some stripped-down DOS-like functionality provided. There is no COMMAND.COM etc. on it. It is …

There is no autexec.bat on the floppy. I am not even sure there is any version of DOS on it either. I suspect it contains a custom boot block, so no need for an autoexec.bat. It just assumes a standard PC (XT? AT?) hardware platform.

I just open DosBox by double-clicking on it in the Finder. I also tried editing the preference file in ~/Library/Preferences to add a "boot" command to it and then double-clicked DosBox. I start DosBox with no command line options at all, nor do I know what command line switches are available. Once …

This is probably a stupid question, but I can't find an answer to it in the FAQ sections. I installed Dosbox on my Mac OS X-running machine. I want to run an old game on a 1.44MB floppy which must boot off the floppy to run. I start up DosBox and type "boot floppy.img". DosBox then promptly tells me …