No root

[next pollen]

I have not root at all

[leaden bane]

ok so this is because when you manually defined the partitions, you didn't select any of them to function as the file system root. aka mounted at /

[hard otter]

Create one root partition
File system: ext4
Mount point: /

[hard otter]

Yup

Isn't there any other partitions?

Also check if storage is using MBR partition table style or GPT

GPT requires EFI partition along root /

[next pollen]

I does let me add a partition

[torpid saddle]

Do you have any hdd or ssd on that pc?

[shut helm]

close the installer. Open the DISKS app from the start menu: Accessories. if the internal drive isn't shown, then you have to go in BIOS and turn off RST and/or VMD (look up those terms in google)

also called iRST

• also if Storage mode in BIOS says RAID, switch it off, put AHCI mode