On 20/05/18 11:39, Andrew Greig wrote:
Now I am thinking that I should unplug the 2 x 2Tb disks and install the system on sda1 with a 1Gb /boot and lvm selected.
Note that if you do this the drive names can still change when you plug the other two disks back in. That's why you should use UUIDs and not worry about what names they are assigned.
Once I have a working system, then replug the SATA drives and set up RAID.
If you like.
In the past I used to be able to define a partition table but Ubuntu is doing my head in. It offered to use my 1Tb drive as a swap partition.
With Ubuntu 18.04 it should default to using a swapfile and no swap partition. If you're having trouble with the partitioning, the simplest solution is to tell the installer to use the entire 1TB drive in the default configuration that it recommends rather than doing it manually. Hope that helps, Andrew