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From: Roy <roy...@gmail.com>
Newsgroups: comp.os.coherent
Subject: Re: virtualbox
Date: Thu, 26 Apr 2012 01:10:09 -0700 (PDT)
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On Apr 26, 2:19=A0pm, andrzej Popielewicz <va...@icpnet.pl> wrote:
> W dniu 2012-01-04 19:16, va...@icpnet.pl pisze:
>
> > Hi,
> > Motivated by the succesful experiences of Hans with qemu I have checked=
 the
> > newest version of virtualbox 4.1.8. Suprisingly Coherent boots fine .
> > Important : I have used DELL Optiplex 755 with Core 2 Duo.
> > One can boot rescue floppy kernel cohat. If one create virtual disk , f=
or example
> > in vdi format , then being in coherent session one can format this disk=
 with mkfs and then copy files from floppy to this disk. Afterwords one can=
 reboot using cohat0 kernel, with disk being the booting device.
> > Coherent is very fast, for both kernels, but Optiplex must be used. If =
used with standard P4 box I have observed bad performance.
> > Have a fun. dd image crescue.dd must be renamed to crescue.img and raw =
format floppy image must be set during adding floppy in virtualbox.
>
> > Andrzej
>
> Important notice.
> I was using VirtualBox in XP on Core 2 Duo system. One of the settings
> in BIOS allows for setting virtualization support. In my case I have it
> switched off. Roy has made experience , that if switched on the
> performance of HD IO suffers. So keep it OFF. It is really amazing,
> probably switching it on makes CPU behaviour too complicated for
> Coherent kernel.

Removing the check mark in VM settings acceleration tab is enough, no
need to disable it in BIOS.

>
> Andrzej