03-18-2020
As I understood you, you like to combine 2 parts of 2 different disks into one partition/filesystem. You can do that(e. g. by using lvm). But if you do, know that one of those 2 disks fail, the data are completely lost for that filesystem - and you should better have good and recently done backups. In my opinion that's not worth it just to be able to directly use that 20 GB of the first disk.
I would recommend you to just make a filesystem on the new disk with 300 GB and copy the old data to the new filesystem.
Then you may use the space on the other disk for other purposes.
Last edited by stomp; 03-18-2020 at 10:56 AM..
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