I have a re-purposed HP notebook with 12.04 32 bit installed. I'm about to upgrade the ~70 GB drive with a larger one for a new project that will also require 12.04 64 bit.
I had intended to use dd to copy the current disk sda1 to the new one, adjust the partition size, and then just install the new disk and somehow installing 12.04 64 bit in new partitions but I have no idea how to do this. The machine does not have a working CD/DVD drive.
The final result should be reasonable sized partitions for each OS, a shared swap space and the rest of the disk partitioned as "data"
How do I do this? Google mostly gives examples of Linux and Windows dual boots.