Question about Canon PowerShot SD550 / IXUS 750 Digital Camera
Just got a canon sd750 last week, working fine and then today it started displaying message 'card locked'. I checked the card and it is not in the lock position. Even tried a different memory card and still saying card locked! Any suggestions?
I had the same problem and it took me forever to figure it out! On my memory card there is a tiny slider that slides up and down. Mine was slid to "lock" I just slid it back and it was no longer locked! Sounds simple enough now that you know, huh?
Posted on Aug 30, 2007
1) The locking switch on the card might have moved. If so slide it away from the square end of the card toward the end with the electrical contacts.
2) The switch inside the camera maybe stuck. If the switch in the camera is stuck (like mine was) you can tap it with a piece of plastic or blow on it. Just a piece of sand or lint in there can cause this problem. More info at
Posted on Jul 23, 2009
I just got back from the store . Our canon said card locked and we tried the tape and another card . Solution was , get a smaller memory card . I had to down size from a 4gb to a 1gb and it went to work
Posted on Apr 14, 2008
On my card the slider had broken off, and so was always seen as locked.
Posted on Apr 26, 2008
I just read that solution from tdiddy!. Thankssssssssss :)
Posted on Sep 22, 2008
I just read that solution from tdiddy. Yess, yess!!! thanks tdiddy.
Santa Cruz, Bolivia
Posted on Sep 22, 2008
I had the same problem, but it wasn't just the position of the slider. In either position (on two different memory cards) the camera still read the card as locked. The solution that worked for me: A little piece of tape over the slider side of the card so that both positions were covered by tape (see link for example pic: http://www.camerahacker.com/Forums/DisplayComments.php?file=Storage/memory_card_locked)
Posted on Aug 12, 2008
Unlock it from a button on the side of the sd memory card that says unlock
Posted on Jun 02, 2008
Usually card lock just refers the card itself. Just pull the memory card from the computer and look on the side of the card. Is there a little sliding switch> If so slide it to the other position and see what happens when you put the card back in the camera.
Posted on May 21, 2008
Hi this is to tdiddy your right i was having all the same problems and couldnt understand it however did what you said and it worked!! on mine it was a tiny grey button at the side which moved up and down. couldnt believe it was that little thing causing all the trouble.
Posted on May 07, 2008
OMG T DIDDY UR MY HERO.. THANKS SO MUCH LOL!!!!!!!
Posted on Mar 03, 2008
So thankful that I just read that solution from tdiddy! had spent hours trying to figure that one out and was prepared to go out and buy a new one! thanks again.
Posted on Sep 14, 2007
Thanks for the help
Posted on Apr 02, 2008
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