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=== FD-1 Disk Drive Adapter ===
This adapter allowed to use an Amstrad FD-1 3" drive on Vortex F1/M1 setups connected to a CPC 464. Since only two drives can be used simultaneously, the 3" drive had to be mounted using a RSX command ("|S,1" as drive A, "|S,2" as drive B, "|S,0" to disable the 3" drive).
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=== Second drive upgrade Drive Upgrade ===
An upgrade was available which allowed to upgrade a single -S drive to a dual -D drive.