@Gavilan : You may edit your question !
Some CF that work with USB/PCMCIA adapter may not work properly as IDE DRIVE on an A1200 !
exemple :
Thomson Lyra 64mb CF (made by Sandisk ?): Ok as Pcmia / KO as IDE Drive ( data corruption ).
"yellow" PQi 64 mb : Ok as Pcmia / KO as IDE Drive ( data corruption ).