GonzoML wrote:

Is there a way for DOSBox to indicate less bytes available on a drive? […]
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Is there a way for DOSBox to indicate less bytes available on a drive?

AutoCAD 9 runs fine in DOSBox, but when saving the file, it returns an error saying "not enough space on disk" (because the "bytes available" is too large).

I've been using AutoCAD 9 continuously for >25 years, almost all of the time on OS/2 in DOS sessions -- works great! About 10 years ago when I started running OS/2 on a Pentium II with huge hard disks I had the same above error, but I solved the problem by creating a small logical drive with less than (about) 100Mb available, and then AutoCAD 9 would save the files to that small logical drive just fine. On my OS/2 machine, it doesn't matter how large the logical drive is, but rather it's all about the "bytes available" on that logical drive that matters -- AutoCAD 9 can't properly interpret if there's enough space on the drive unless the "bytes available" is under some magic number (about 100 Mb as I recall).

I don't see where DOSBox supports virtual disks.

Any ideas?

Thanks.

DosBox primarly designed for games ...,
there no support for non-games program.

And from your post, i see you haven't read/understood the readme files that included in DosBox, read that first.

Although I looked for help in lots of places, I now found the README.txt, and yes I understand how to set freesize. No luck yet resolving AutoCAD 9 error message. If I figure it out on my own, I'll check back here to see if anyone cares to hear what I accomplish. Otherwise, I won't bother you again.

you can also find program to create a FAT16 formated hdd images, and those images can be mounted too, you will have control how large the 'hdd' will be.

mount a c:\dosprog -t floppy -freesize 5000 <--- solves problem, even with this large amount

mount c c:\dosprog -freesize 5 <---- does NOT solve the problem

Seems AutoCAD9 understands the floppy in DOSBox better than other.

If I'm not mistaken (see for instance Terminator (1990) install help ), "-t floppy" sets the total drive capacity and not just the free capacity. This in turn suggests that you could substitute an appropriate "-size" parameter for "-t floppy" and satisfy AutoCAD, but as per the readme, the "-size" parameter, unlike "-freesize", requires a specification in terms of cylinders, heads, and sectors. And if "-t floppy" works for you, there's no reason not to stick with it, I guess.