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Problems/Virtual PC

Posted: Sat May 21, 2011 8:07 pm
by Insightsoft

I'm facing a little problem...

On Bocsh, VMWare (Fusion and Player), Parallels, etc it works just fine... but in Virtual PC generates a 'bad parameters sent to the driver'...

Here is a little background:

-Loading ROOT
works fine in all (including Virtual PC)

-When I try to load FAT
works fine in all (excluding Virtual PC)

How can be possible?

I already have reviewed all values passed to BIOS function, and it is correct... There is no crossed boundary (on buffer)...

And, as I always, I must understand why this is happening... Is there any clue?


Re: Problems/Virtual PC

Posted: Sun May 29, 2011 6:03 pm
by roboman
Does it work on real hardware outside an emulator?

If it works in several emulators and on hardware, then you have found one of the bugs or places where emulation under Virtual PC isn't 100%

Re: Problems/Virtual PC

Posted: Fri Jun 10, 2011 11:27 am
by Insightsoft
....ya... it is, definitely, a VPC bug!!!

Re: Problems/Virtual PC

Posted: Fri Jun 10, 2011 6:35 pm
by Mike

The probability of it being a bug is very slim. Its probable -- but in almost all cases represents a compatibility error with your software. Have you tried it on real hardware?

Re: Problems/Virtual PC

Posted: Sat Jun 11, 2011 1:19 pm
by Insightsoft
Yes, mike...
It works better than MS-DOS (heheheheh. Just kidding!)... but it works!

Re: Problems/Virtual PC

Posted: Sat Jun 11, 2011 2:15 pm
by halofreak1990
I too have problems with the floppy driver in VPC.

Though I suppose it is due to the error-checking my driver does, since on real hardware, it cannot return the head to sector 0 in one try. So I retry a couple of times to get the head to where I want it. Unfortunately, that makes it hang in Virtual PC. I don't know why, though, because any document on floppy drives advises you to retry any command at least once because of drive specifics and other irregularities that occur on real hardware.

But if your OS works on real hardware, and you have a spare machine like I do, why not test it on real hardware?
It'll save you a lot of headaches trying to figure out why it won't work in VPC or Bochs (IIRC, my floppy driver doesn't like Bochs either)

Re: Problems/Virtual PC

Posted: Sun Jun 12, 2011 7:36 pm
by Insightsoft
Already tested on real environment. And works... That's why that I think its a Microsoft problem... or something specific to the VPC must be done... and I don't know what it is...