Ubuntu’s popularity often makes it the default choice for new Linux users. But there are tons of other Linux operating systems that deserve your attention. As such, I’ve highlighted some Ubuntu alternatives so you can choose based on your needs and requirements—because conformity is boring.
The easiest hack I have encountered is to install netinstall Debian, and then on top of it, again install same Debian, without configuring or touching anything. When Debian is installed for the first time, it writes those cdrom folder files, which Debian detects upon a reinstallation. As weird as this sounds, it works reliably, both on my SSD/HDD laptop and ancient desktop with single HDD.
Last month I dualbooted my old Windows 7 desktop with Debian 12 GNOME, works smoothly until I open 10+ Firefox tabs, a Spotify stream and a video in MPV, as it has 4 GB RAM.