Hello and welcome to LQ.
We are talking about linux physical here that is.
For the most part a VM is a real system so you could consider any type of way normally used to copy from one hardware to the next. That may include clone or copy or such as in dd command or live media like clonezilla. I might consider clonezilla myself. I have used G4U before over tcp/ip. Slow dd copy but worked in box I couldn't get to easily.
They do offer programs to convert physical to virtual also depending on the VM you are using. Look up P2V.
The P2V programs also may correct driver issues. Not all physical installs have all the drivers by default for a virtual client.
One might consider a full clean install to a VM also from the original sources. Just move data to vm client.
A dd image is a true raw drive and could be converted to almost any virtual format. You'd need to import that to a vm client or attach it. It could be run as raw too.
One could copy using a file by file method. Just recreate the loader and copy the files. Generally fast.
Last edited by jefro; 07-07-2016 at 04:36 PM.