The first Amigas stored their Kickstart on special Kickstart floppy disks.
This Kickstart version (1.0) was only available for the Amiga 1000.
Kickstart 1.2 was the first version used for the A500 and A2000.
This Kickstart version (1.3) was used in all available Amigas at that time (A500, A1000, A2000 and even the CDTV).
The first version (2.0) was only used with the A3000, but the most common version was 2.04, which was included in all ECS Amigas (A500, A600, A2000, A3000).
This is an early version of Kickstart 2.0 that was being developed for the Amiga 3000.
It still had the old Amiga font with serifs, but everything else was already new for the 2.0 release.
This Kickstart version (3.0) was included with all AGA Amigas.
Kickstart 3.1 followed quickly and which was also released for all ECS and AGA Amigas (A500, A600, A1200, A2000, A3000, A4000, CD32, each with slightly different revisions).
This is the official boot screen from Commodore's CDTV Amiga. It differs a bit from the Anim version that is circulating the web, possibly because of size constraints within the boot roms.
It doesn't work that well as gif animation as most browsers don't play it back at the correct speed.
What would the boot disk have looked like if the Amiga had used 5¼" disks?
Back to the old tape times. I think booting from datasette tape would have taken longer than anybody would have been able to bear.
Nice animation from an intro by "Spreadpoint".