VirtualBox without GUI

I think there are 2 levels of GUI-less-ness in virtualization software like VirtualBox.
Today I want to write about 1st level of GUIless-ness in VBox.

One can use VBoxManage CLI tool or open source Web app to modify/start/stop VBox guests.
After starting up VBox guest, one can attach to guest's console remotely by using RDP tool like WIndows OS's
"Remote Desktop".

But......., you may ask,  what about if I goofed when modifying grub.conf and guest doesn't boot with default
GRUB entry? Can I attach to guest's console before grub selection screen times out?

One way to achieve this is to make BIOS screen timeout longer like:

$ VBoxManage modifyvm "OracleSolaris11_1" --bioslogodisplaytime 60000

Now, if you attach within 60 seconds , you will get this screen.

Now, if you hit F12 , you will get this. You don't do this when you edited grub.conf wrongly but I hope you get the idea.

My "Remote Desktop"'s title bar says it's localhost:3390 but it's actually tunneled to remote Solaris server. :)






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The views expressed on this blog are my own and do not necessarily reflect the views of Oracle.

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