I'm trying to install a dual boot (with Window 10) on my new XPS-15 (with a SSD 256Go).
Everything works well (following this tutorial) until I go on step "Installation type".
Where I can't select "Something else", and I already have the partition table but completely empty. I can't see any existing partition, or add new one.
Best Answer
It's due to the XPS's PCIE M2 drive configuration that is not recognised by the installer. I came across the same issue, in most cases this can be fixed by going to the BIOS (F2/F12 on boot up) and changing the SATA setting to AHCI. Save these changes and then reboot your Ubuntu boot drive and retry the install.
If the issue is still prevalent then see Dell's full guidance below: