I'm trying to flash my 8Gb Sandisk SDHC card using the built in card reader in my late 2010 Macbook Pro (aluminum unibody) but I'm getting a 'permission denied' error. I've tried both http://exaviorn.com/raspiwrite/ and the build in dd command (dd bs=1m if=img-test.img of=/dev/disk1) in the terminal but both have given me the same error. Additionally, I've tried doing it as root using sudo but thats no different.
Upon closer inspection I noticed that the card is coming up as read only. I've verified that the lock switch is in the off position and I tried toggling it to make sure it was not misprinted.
I suspect that the computer doesn't support SDHC but I didn't think that it was that new of a standard. Has any other Mac user experienced this problem?