Ok, so you installed Ubuntu 9.04 on Virtual PC 2007, and it now asks you to reboot, (or you already tried to reboot, cursed me, and came back here to see if you missed something).
If you are lucky, everything works fine, if not you cannot see anything or you get a bunch of errors. This is because, once again, Ubuntu is trying to guess your virtual screen resolution and it is guessing it wrong.
So you need to edit the ‘boot’ file once and for all so that from now on it boots into the right screen.
You need to do 2 things, first you need to edit the boot, one more time to get into Ubuntu and then you will need to update the boot file so that you no longer have to do this again.
So, reboot Ubuntu, when you see something like ‘grub loading…‘, press esc and you will see a menu.
Select the first line, it will say something along the lines of ‘Ubuntu 9.0.4, Kernel …’. The other lines should say almost the same with extra words like, ‘Recovery mode‘ and ‘memtest86+‘ don’t choose those.
Press ‘e’ to edit the boot commands.
Select the line that says something like “Kernel …“, (normally the first one, but sometimes the second line).
Press ‘e’ again, (to edit that line).
At the end of that line simply add
Press ‘b’ to start the boot sequence.
Now you are back in business, Ununtu is up and running again.
The last thing you need to do is make sure the changes you just did are saved so you don’t have to do the same thing over and over.
So, once Ubuntu is up and running select the menu option, ‘Applications>Accessories>Terminal’ and you should get a white window with a blinking cursor.
Next to that cursor type the following, ‘gksudo gedit /boot/grub/menu.lst‘, press enter, give your password.
## ## End Default Options ## title ... uuid ... kernel ...
At the end of the line that says ‘Kernel‘ add ‘noreplace-paravirt‘, (without the quotes of course).
Save the file.
Close the editor
Back at the command prompt simply update the grub, (in other words tell Ubuntu that you changed the file).
And that’s all, you can now reboot into your Virtual PC Ubuntu and all should be fine.
Note: If like me you are lazy and you don’t want to type everything, simply copy the text, place your cursor where you want the text to go and in Virtual PC select ‘Edit>Paste‘ and it will ‘type’ everything for you.
<Edit>Have a look at the third post to help you handle updates.