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Canon powershot A540

I have tried to erase memory card but it says card locked. How do I unlock.

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  • quilting13 Jan 08, 2008

    I have gone thru guide book and can't find out how to unlock card. It will not let me erase pictures because it says card locked. Please Help.



    Thank You

  • Anonymous Mar 12, 2008

    my camera is a Canon PowerShot A540 Digital Camera and im trying to erase picture it is locked i also tried moving the white bar on my memory card but it won't work please help

  • Anonymous Jan 16, 2009

    same here what can I do to unlock it?

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I had the same problem with a card in my power shot A540. on the side of the card there is a little white slide-bar. Push that bar the opposite direction of where it is and see if that works. Good luck!

Posted on Jan 22, 2008

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SOURCE: canon powershot A540 I have tried

Look at your memory card. SD cards have a slide switch along one edge. The position farthest from the contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card.

Posted on Jun 17, 2011

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1 Answer

When putting a Lexar Multi-Use 16 GB SDHC memory card in my Canon Powershot A540 I get Memory Card Error message as well Card Locked message. Have tried unlocking it by the slide on side of card, is t


It's a lost cause. The A540 works with SD cards. While SDHC cards will fit into the slot, they are electronically incompatible and will not work in devices not designed for them. You need to stay with SD cards, 2GB and smaller.

Jan 03, 2013 | Canon PowerShot A540 Digital Camera

3 Answers

Hi, My canon PowerShot A540 camera gives an error " Card locked" Memory card error. I tried switching off the lock, but it didn't help. The card does not get recognized while inserting it in...


There are several possible causes for "memory card locked", "memory card error", or "no memory card". The most common is trying to use a 4GB or higher SDHC card with an older camera made before SDHC format came out. Other causes include problems with the tiny slide switch on the side of the card, or the electrical contact switch internal to the camera. The problem may also arise from simple formatting problems if the card has never been formatted in the camera (note that this will also erase the card). Troubleshooting tips for this problem may be found at this link.
You also mention recovering photos saved on the card. If you actually did take pictures with this card (assuming it's a 2GB or less standard SD card, as 4GB SDHC was not designed for your camera), you may be able to recover the photos using recovery software. See this other link.

Jun 10, 2011 | Canon PowerShot A540 Digital Camera

1 Answer

My memory card is locked and i tried everything i have a canon a540 powershot and the memory card is a sandisk 8gb


Have you noticed the slider on the side of the card? This acts as a lock and might have been accidentally moved to the locked position, in which case you could just move it back to unlock again. Hope this helps.

Dec 27, 2010 | Canon PowerShot A540 Digital Camera

1 Answer

Canon powershot A540 I have tried to erase memory card but it says card locked. How do I unlock.


Look at your memory card. SD cards have a slide switch along one edge. The position farthest from the contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card.

Dec 17, 2010 | Canon PowerShot A540 Digital Camera

1 Answer

Memory card locked. Will this camera support SDHC cards or just SD cards


The A540 uses SD cards, not SDHC cards.

SD cards have a slide switch along one edge. The position farthest from the contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card. If the switch is already in the proper position, slide it fully the other way and then back again.

Nov 01, 2010 | Canon PowerShot A540 Digital Camera

1 Answer

Memory card says "card locked"?


There might be a little switch on the side of the memory card that allows it to be locked. Just unlock it, and it should be fine.

Oct 16, 2010 | Canon PowerShot A540 Digital Camera

1 Answer

Memory Card Error Card locked. I get the same


If you've already tried the lock/unlock switch on the side of the card, then see this link for additional troubleshooting tips for this problem.

May 16, 2010 | Canon PowerShot A540 Digital Camera

1 Answer

My camera with new batteries in it says, Memory card error & also says memory card locked, but neither are true, because we've tried new memory cards and it says the same for all.


New cards must be formatted in the camera. This erases and optimizes the card for that particular camera. Be sure the slide switch on the side of the card is in the unlocked position.

May 08, 2010 | Canon PowerShot A540 Digital Camera

1 Answer

Memory card locked


When this problem occur you need to set the memory card unlock or not protected. Remove the memory card from camera and you can see a small button in the memory card, so you need to slide that to set the memory card unlock or not protected.

Feb 07, 2010 | Canon PowerShot A540 Digital Camera

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