That interface is extremely poor:
can’t direct
use of existing swap without formatting (formatting will mess up swap use in my other systems). Not only that, but the installer wants to use 2gb free space that I left as free space because “I want it to remain free space”!
{hint: https://www.youtube.com/watch?v=6S5q4bF6lac}
use of existing partition to be formatted ext4. I have no use for btrsf now or in the future but see no way of avoiding it.
@48n66w Hi and welcome to the Forum 
It’s all there… See https://agama-project.github.io/docs/user/guides/storage
I use ext4 
How to may be obscure, but it’s there. In 16.1pre it’s been less poor than 16.0GA offered. I don’t proceed without directing to a previously prepared EXT4 installation target, making zero partition table changes. It has been successful here several times in both 16.0 and 16.1pre.
Disk /dev/nvme0n1: 953.87 GiB, 1024209543168 bytes, 2000409264 sectors
Disk model: SPCC M.2 PCIe SSD
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 1F5BF8E3-EF76-4A16-BF3E-78B891EAB2B3
Device Start End Sectors Size Type
/dev/nvme0n1p1 2048 206847 204800 100M EFI System
/dev/nvme0n1p2 206848 239615 32768 16M Microsoft reserved
/dev/nvme0n1p3 239616 360935908 360696293 172G Microsoft basic data
/dev/nvme0n1p4 1999337472 2000406527 1069056 522M Windows recovery environment
/dev/nvme0n1p5 360937472 360939519 2048 1M Linux filesystem
/dev/nvme0n1p6 360939520 360941567 2048 1M Linux filesystem
/dev/nvme0n1p7 360941568 360943615 2048 1M Linux filesystem
/dev/nvme0n1p8 360943616 363040767 2097152 1G EFI System
/dev/nvme0n1p9 363040768 375623679 12582912 6G Linux swap
/dev/nvme0n1p10 375623680 836997119 461373440 220G Linux filesystem
/dev/nvme0n1p11 836997120 1004769279 167772160 80G Linux filesystem
/dev/nvme0n1p12 1004769280 1172541439 167772160 80G Linux filesystem
/dev/nvme0n1p13 1172541440 1340313599 167772160 80G Linux filesystem
/dev/nvme0n1p14 1340313600 1508085759 167772160 80G Linux filesystem
/dev/nvme0n1p15 1508085760 1675857919 167772160 80G Linux filesystem
/dev/nvme0n1p16 1675857920 1843630079 167772160 80G Linux filesystem
/dev/nvme0n1p17 1843630080 1998819327 155189248 74G Linux filesystem
I want to install to ext4 partition 16 on my laptop with data-deletion on that partition only and no reformatting even but see no way of doing so. On my desktop there is a working Leap system but that was installed as 16 and I can’t remember how I did it. Installation is to process what a control-panel is to GUI: prime real-estate where nothing can be lossy and if a user has a single question or moment of uncertainty then it’s back to the drawing board. My desktop also has a Slackware, that one I can just dd over to the laptop and boot it.
@48n66w by default it shows swap and / with btrfs. All you do is select and hit the trash can.
Select add in the drop down and use an existing partition I assume /dev/nvme0n1p8 then type in the mount point /boot/efi and then select it. Set to use current.
Select the next partition your wanting, so rinse and repeat for swap and then / then make sure you select custom and set all the other partitions to not modify.
Got it done, don’t remember how. At the time I was of the opinion that it was a matter of wording. I know what devs are up against with 200 cuntries and automated machine translation and all that…
Thanks. Replying just so I can find this thread again at a later date.
