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[Qemu-devel] Re: RE: qemu debian etch

From: Alex
Subject: [Qemu-devel] Re: RE: qemu debian etch
Date: Sun, 29 Jan 2006 14:02:33 -0800

This works for me:
eject cdrom
switch back to windows and try to access the cdrom. Now windows will 
complain that there is no media in the drive.
switch to qemu console
change cdrom /whatever
go back to windows and try again. This time Window should see the correct 


"De Leeuw Guy" <address@hidden> wrote in message 
Thanks Juergen,

Finnally I Install first the win xp home, and after upgrade to the xp
pro and install the office 2003
I use windows under qemu just to maintain applications that are builded
with VS2002 and to help my users.
I don't know if this problem is a bug but I loose about 4 days with this
problem :)
I install now VS2002, and same problem appear except that I can going to
the windows explorer and start a refresh
of the cdrom (D:) but a lot of try is needed :(

No, the cdrom change does not crash my system, the only crash that I
know come when the resolution of the screen is not correct and in this
case qemu crash when I try to switch to full screen.

Except this problem, qemu is a incredible product, I use for differents
tests in the future, thanks a lot to the devellopers

(sorry for my poor english)
Best regards,

Juergen Pfennig a écrit :

>win2003 (and as you say win XP) does not detect the media change.
>As a consequence the cached data gets not flushed (inside win).
>The "change cd /dev/cdrom" sometimes caused a qemu crash for me.
>So you probably found a bug. If nobody else solves the problem it
>will stay on my list as a low priority problem.
>TIP: mount your cd rom (images) via loopback and export them via
>smb (allow samba to follow symlinks and use simple ln -s commands
>to point to your mount points). Evidently you need a working win
>to do this. For (ms) win apps you don't need the iso images, just
>do what ms calls an "administrative install" to your smb server.
>Administrative installs are compatible with wine (if you like
>that) and can be shared from multiple clients (e.g. also saving
>disk space).
>TIP: to install windows (from MSDN cds) ... step (1) install a
>minimal system from a bootable cd. (2) make sure that the vm
>can access your smb server. (3) create a "slip stream" image of
>the win and SP you want to install on your smb server. (4) making
>an MSDN cd bootable will often be a problem - don't try it if you
>don't know better. (5) From your running vm re-install the (slip
>stream) win that you want via smb. (6) You should not go the other
>way round (installing a SP on the VM), which takes longer and
>wastes disk space. (7) start your VM with -vga to activate windows
>(8) configure your WSUS or other update mechanism and let it
>install the official patches from MS.
>TIP: don't panic. At least for win2003 the disk io can degenerate
>completely so that a login can take 75s. Sometimes it helps to
>run a disk-defrag (but stop it after a minute or so, otherwise
>it fills your virtual disk with crap). Here some figures for a
>P4 2.4 GHz and 1GByte memory (qemu -m 300 with kqemu used):
>(1) win2003 takes about 60s to boot (a factor of 2-3)
>(2) a login takes 6s (a factor of 3)
>(3) old COM based apps like Word have a "slow down" factor of 3
>(4) .NET apps seem to run a little faster (VS 2003 is usable)
>(5) IO is a problem. Don't expect more than 5 MByte/s
>Win XP/2003 are a least usable and the cd rom bug is not so dramatic.
>It's also not a Debian problem.
>Yours Jürgen
>Qemu-devel mailing list

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