I did updated my VirtualBox install with the latest version available 
(the Oracle one, not the OSE) - 4.2.16. Unfortunately, UDVD2 still 
freezes there for - literally - a minute. It starts booting, and gets 
stuck for ~1 minute on the screen on the screenshot below.


Then, after a minute it continues to boot happily, and CD access works 
just fine.

Using additional TSRs to solve the issue sounds a bit like a contraption 
to me. Sure, it's technically interesting that such solutions exists, 
but as a simple end user I naturally tend to pick solutions that works 
out of the box, without requiring any additional magic (and XCDROM.SYS 
seems to be such simple solution).


On 07/22/2013 08:38 PM, Rugxulo wrote:
> Hi,
> On Sun, Jul 21, 2013 at 1:35 PM, Mateusz Viste <mate...@viste-family.net> 
> wrote:
>> On 07/21/2013 07:59 PM, Bernd Blaauw wrote:
>>> Ouch, thought this was solved, both with and without some custom fixing
>>> driver. Most recent VirtualBox (4.2.16?) used? Most recent UDVD2.SYS
>>> used?
>> The UDVD2.SYS I used is the latest I could find (from the link you
>> provided).
>> The VirtualBox I have is the one my distro packaged for me: 4.1.12.
>> Maybe this is something that got fixed in newer VBox.. dunno.
> I know it's a fairly big download (esp. on slow connection), but you
> could download latest directly from their site. They have a fairly big
> selection of Linux distro packages (Fedora, Ubuntu, Debian, OpenSuSE,
> Mandriva), even one (well, x86 or x64) that says "all distributions"!!
> (EDIT: Apparently binaries for "all distros" are 81 MB in size each.)
> https://www.virtualbox.org/wiki/Linux_Downloads
> http://download.virtualbox.org/virtualbox/4.2.16/VirtualBox-4.2.16-86992-Linux_x86.run
> http://download.virtualbox.org/virtualbox/4.2.16/VirtualBox-4.2.16-86992-Linux_amd64.run
>>> In worst case, revert to XCDROM but keep UDVD2 around.
>> That's exactly what I did. UDVD2 seems really nice. It just can't be a
>> default if it can trigger freezes
> I'm pretty sure this is fixed in newer versions. I mean, I don't use
> VBox much, but even on my painfully slow (no VT-X) laptop, I don't
> recall seeing any slowdown at bootup.
> BTW, I think there was also a DOS TSR that Eric Auer made for working
> around this. I don't know why it wasn't more widely publicized. I
> forget where I even got it, and I don't think I ever tested it. Worst
> case scenario:  I (or Eric or ...) could email you that for testing.
> EDIT: Here is probably where I found it:
> http://sourceforge.net/apps/mediawiki/freedos/index.php?title=VirtualBox_-_Chapter_8#The_fix

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