*ROM used in Cartridges or Hardwired... Faster but so expensive.
*[[Cassette data information|Cassettes (sames as Audio Cassettes), awfully ]]. Awfully slowler and not that reliable.
In modern day, the Cassette port can easily be replaced by any modern audio device : MP3 or CD readers.
Despite this, Disk are one of the easiest way to read softwares on Amstrad 8 bits.
Amstrad 464 (Plus or OLD) lack the extra ROM needed to use a Disk Drive. That's why external Disk Drive for CPC include such ROM.
Despite this, Disk are one of the easiest way to read softwares on Amstrad 8 bits, especially 6128 or 664 models.
The most common trick is to use a 3"1/2 disk drive, as this is the easier to find nowadays. You can even replace the 3" dick drive from a 6128+ with a proper 3"1/2 disk drive, by filing some plastic.