Canon fs 100 does not read sd card - Canon FS100 Flash Media Camcorder

SOURCE: canon power shot sx 100 reads card locked

SD Memory cards have a tiny switch on the edge that marks the memory card as read only and prevents any writes. If you get the message "Card locked!" when you turn the camera on then turn the camera off, eject the SD card. With the card facing you (metal contacts facing away) the switch is on the left hand edge, slide towards the top of the card to make the card read/write again.

SOURCE: Connecting the Canon FS 100 to my iMac

I have the same issue with Canon model FS10
The only thing I could find was a MOD converter
http://www.my-video-converter.com/mod_converter_mac/
It does cost $29 but you can try before you buy and it worked for me.

SOURCE: Can I use 8GB SD cards in my Canon Powershot A620

The A620 uses MMC and SD cards. SD cards max out at 2GB in size. Larger cards are actually SDHC or SDXC cards and will not work in the A620.

SOURCE: my canon SD 750 camera does not read the sd card even when the sd card is not locked, how do i unlock the internal switch in the camera for the sd card?

Could be faulty sd card and you may need to try another one to see if you get the same message.

SOURCE: canon sd card can,t read

Try formatting the SD memory card using the camera's Menu settings.