> CD-ROM media
Wow, I just learned that I can still buy a pack of new CD-RW discs. This is an almost 30 year old format that is still published for!
Long live ATAPI!
Seriously though, why still publish CD formats when a usb-stick is far more ubiquitous and much easier to actually write. Are there systems that can boot CD-ROM interfaces that don't have USB boot capability still?
Flash storage can’t sit on the shelf without bitrot as long as CD-R and DVD-R can, even though writable optical media itself isn’t the best for durability.
CD-RW/DVD+RW on the other hand are also even worse than flash in that regard and decay very quickly in my experience.
I am guessing, but many of us still use CDs / DVDs (/BluRays?) to make backups. It's cheap. Lasts long.
> Are there systems that can boot CD-ROM interfaces that don't have USB boot capability still?
New x64 systems? Probably not. But since it still supports x86 and a whole slew of other architectures[1] still that don't always, it probably wouldn't make sense to stop.
One thing ISOs are useful for is installation under a hypervisor, or BMC. You can usually do the exact same thing with USB images, but a lot of the UI/workflows are oriented around .iso files.
>Are there systems that can boot CD-ROM interfaces that don't have USB boot capability still?
Old Systems. I have one such system that will is in line to move to 11.0 from 9.3. To do that I will boot from CDROM. It does not have any USB ports.
NetBSD is probably the only UN*X Type OS that can run on many of these 32 bit systems. Plus the NetBSD team is doing their best to support these old systems.
That saves me $ and helps the environment a little bit :)
Blit the iso to a usb stick and boot it. If your PC is recent (made in the past 15-20 years or so), it'll understand it just fine.
NetBSD even supports installing from floppies on old systems if you don´t have a CD-ROM drive.