I try to set up Ubuntu 20.04 (and tried with latest Kali and Mint as well) on a freshly formatted HP ProBook 4740s from a bootable usb stick (original source, created with Rufus). The wizard generally works fine until it comes to the partition section. Tbh I have no idea why but it seems like the installer can only spot the usb drive (16gb) and does not see my internal hdd at all. I tried to change boot options from legacy to UEFI but it does not fix the issue. What's more, I have no idea what to select for the root file system (what to choose and what size). Can you guys help me out? Cheers
Update: I have SATA Device Mode set on AHCI all the time - doesn't change a thing.