Failed rebooting ubuntu 12.10 after installation in VirtualBox

Question

I tried to install Ubuntu 12.10 i386 with the latest VirtualBox on windows 8 x64 pro sony vaio vpcf11e1r. At the end of installation I waited for about 10 minutes observing the system is going down for reboot now! and reset vm manually. New boot resulted in the same installation procedure asking to try or install it again. Why the reboot failed?

Solution

Your VM is booting the ISO/CD Image, not the Installed system. That happens because you still have the ISO or CD in the VM drive un mount it, eject it and reboot the VM.

Source and credit to Uri Herrera from comments:

Comments

[Uri Herrera]

"New boot resulted in the same installation procedure asking to try or install it again." - Did you removed the install media from the VM?.

[Chesnokov Yuriy]

I have not touched any files, just reset VM from menu

[Uri Herrera]

That happens because you still have the ISO or CD in the VM drive un mount it, eject it and reboot the VM.

[Chesnokov Yuriy]

amd64 version survived manual reset without any manipulations with iso

[Uri Herrera]

OK I'll be more clear, Your VM is booting the ISO/CD Image, not the Installed system.

[Chesnokov Yuriy]

yes, unmount helped, I was using iso file