VirtualBox sets the BIOS serial number of every VM instance to 0. It seems to be possible to change some BIOS settings, but I haven't seen anything that directly references the serial number.
Can anyone suggest a way to do this?
Really has detailed answer for this.
You can set the bios serial number by doing this:
The error you were getting is caused by the serial not being set as a string value, if you have a pure number you should prepend it with
Not from any external settings. But you can from the code and then build it yourself:
Source file: DevPcBios.cpp
Change "0" to whatever value you need.
EDIT: You can apparently use VBoxManage setextradata. I have used it in the past for other type of configurations (not bios related) and didn't test this particular setting. Give it a go:
Otherwise... revert back to source code editing and building.
Best of luck.
If you run that command, and get the error referenced by Roger, you need to back out the command by running the command without the last parameter (VALUE).
This removes the entry causing the error.
If you are unsure of what the last offending command was, open the ~~~.vbox (XML) file in the root of the VirtualMachines folder of the specific VM and review the EXTRADATA section.
Running the command-line call to vboxmanage is the best way to modify these. Editing the xml file does not stick 100% of the time.
Try using a serial number that contains 20 byte hexadecimal string: