[CentOS] Prevent Anaconda from switching root and swap partition

Wed Apr 7 11:39:22 UTC 2021
Nicolas Thierry-Mieg <Nicolas.Thierry-Mieg at univ-grenoble-alpes.fr>

On 3/31/21 11:10 AM, Nicolas Kovacs wrote:
> Hi,
> More often than not, when installing CentOS, I choose manual partitioning and
> then apply the KISS principle, with a very simple partitioning scheme that
> looks more or less like this:
>    * /boot partition: 500 MB, ext2
>    * swap partition: equivalent to amount of RAM
>    * root partition: available space, ext4
> Now when I do this, Anaconda insists on switching my swap and root partitions,
> so instead of this:
>    * /dev/sda1: boot partition
>    * /dev/sda2: swap partition
>    * /dev/sda3: root partition
> ... I get this:
>    * /dev/sda1: boot partition
>    * /dev/sda2: root partition
>    * /dev/sda3: swap partition
> Up until now this hasn't bothered me much. But for my needs right now it does,
> because I need my root partition to be at the end of the disk, so it can be
> expanded later on.
> Anyone knows how I can prevent Anaconda from switching my root and swap
> partitions? What I'm doing right now is switching to a text console with
> Ctrl-Alt-F5, manually partition using fdisk, switch back to Anaconda and then
> rescan the disk, but it's quite a PITA.

an alternative could be to NOT create any swap partition, and set up a 
swap file instead.
man mkswap
man swapon