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I installed the mini ISO of Ubuntu 11.04 in VirtualBox. After unmounting the ISO image and booting, I can see only black screen for about two hours? Is it normal? What can I do with it in virtual box and proceed with running the system successfully?

thank you

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See this answer to debug your problem. When you start the virtual machine and the bootloader loads, press Shift, then e to modify the options, remove quiet and splash (or add nosplash at the end). –  rozcietrzewiacz Oct 8 '11 at 15:34
I tried it, it stuck after virtual machine additions so I installed it but after installation Shift does not work to make it more verbose. I'm looking at logs but I don't understand where could be the fault. –  xralf Oct 12 '11 at 12:24
You mean you installed VirtualBox Guest Additions using an iso image? You probably need to remove it from the configuration of the machine now - it may be trying to boot from that image instead of Ubuntu. What logs are you writing about? What do they contain? Don't you think they can be helpful? –  rozcietrzewiacz Oct 12 '11 at 12:55
Yes, I installed VirtualBox Guest Additions using apt-get. Which configuration do you mean? Here is one of the logs. –  xralf Oct 12 '11 at 15:26
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The VirtualBox log that you posted indicates that your installation (the guest Ubuntu system on virtual disk) is broken - notice all the BIOS: Boot-like messages - the machine tries to boot, but fails over and over again. The system probably does not boot at all or fails early - it is hard to tell just from the VirtualBox logs. If possible, try to reinstall this virtual system.

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I already tried it but had problems with reinstalling. I downloaded deb packages and reinstallation didn't help. I installed the old packages again. But now I have stuck and can't remove nor install with apt. If you're good at installing, I can send you output of everything to pastebin. –  xralf Oct 14 '11 at 9:49
Hold on - what you mean with "downloaded deb packages" or using apt? What are/were you reinstalling? VirtualBox? You should re-install the virtual Ubuntu machine, not the VirtualBox application. –  rozcietrzewiacz Oct 14 '11 at 10:02
Yes, OK, I will try to reinstall it, but it takes (I guess) about two hours. –  xralf Oct 14 '11 at 11:35
Yes, something about that. Otherwise, you might create a new virtual machine with a separate virtual disk. And make sure, while setting it up, to choose appropriate settings (like system type: Ubuntu). –  rozcietrzewiacz Oct 14 '11 at 11:42
I reinstalled the virtual machine. After reboot I have chosen boot device with F12, I press 1 because I want to boot from harddrive, nothing happens, when I hold shift, the menu (where I can delete quiet and splash) won't appear –  xralf Oct 14 '11 at 12:41
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