The FDC controller can be used to control 80-tracks and/or double sided drives, though AMSDOS doesn't support such formats. To use 80-track drives and/or dual-head drives, you need to use another CPC DOS instead of AMSDOS. The most popular one is [[ParaDOS]]. It can handle up to 796 KB instead of 178 KB for AMSDOS and it supports 22 different disk file formats, including the three standard AMSDOS ones.
{| class="wikitable"
|+ Supported Formats in ParaDOS
! Format !! Capacity !! Directories !! Type !! Sectors/Track !! Sectors
|-
| PARADOS 80 || 396k || 128 || SS || 10 || &91-&9a
|-
| PARADOS 41 || 203k || 64 || SS || 10 || &81-&8a
|-
| PARADOS 40D || 396k || 128 || DS || 10 || &a1-&aa
|-
| ROMDOS D1 || 716k || 128 || DS || 9 || &01-&09
|-
| ROMDOS D2 || 712k || 256 || DS || 9 || &21-&29
|-
| ROMDOS D10 || 796k || 128 || DS || 10 || &11-&1a
|-
| ROMDOS D20 || 792k || 256 || DS || 10 || &31-&3a
|-
| ROMDOS D40 || 396k || 128 || SS || 10 || &51-&5a
|-
| S-DOS || 396k || 128 || SS || 10 || &71-&7a
|-
| DATA (SS 40) || 178k || 64 || SS || 9 || &c1-&c9
|-
| DATA (DS 40) || 356k || 64 || DS || 9 || &c1-&c9 E
|-
| DATA (SS 80) || 356k || 64 || SS || 9 || &c1-&c9 E
|-
| DATA (DS 80) || 716k || 64 || DS || 9 || &c1-&c9 E
|-
| SYSTEM (SS 40) || 169k || 64 || SS || 9 || &41-&49
|-
| SYSTEM (DS 40) || 346k || 64 || DS || 9 || &41-&49 E
|-
| SYSTEM (SS 80) || 346k || 64 || SS || 9 || &41-&49 E
|-
| SYSTEM (DS 80) || 704k || 64 || DS || 9 || &41-&49 E
|-
| IBM (SS 40) || 169k || 64 || SS || 8 || &01-&08
|-
| IBM (DS 40) || 346k || 64 || DS || 8 || &01-&08 E
|-
| IBM (SS 80) || 346k || 64 || SS || 8 || &01-&08 E
|-
| IBM (DS 80) || 704k || 64 || DS || 8 || &01-&08 E
|-
| ULTRAFORM || 203k || 64 || SS || 9 || &10-&19
|}
Legend: SS = Single-Sided, DS = Double-Sided.
Half of the original AMSDOS rom is occupied by [[Dr. Logo]] from Digital Research. If you replace AMSDOS with ParaDOS, you will lose access to Dr. Logo.