The CDROM image was a firmware upgrade image from Dell (based on Linux). Mounting the image with iDRAC, it worked nicely. As one of the Servers had a dying iDRAC (Dell R320), I needed an USB stick.
Ever since Microsoft started relentlessly bombarding Windows 11 with intrusive, resource-hogging AI tools and unwanted features, there has been a lot of silent dissatisfaction in the air around the OS ...