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See the little tab on the left side of the card? Use your finger nail to move it up or towards the end with the shiny contacts to unlock the card. If you want to protect what you put on the card then push the tab down after you add files to it to prevent accidental erasure and adding new files to it.
If it won't format and says card unusable, then there is probably a bent pin in the CF card slot. I had this problem and my husband took a big safety pin and filed the point and bent it into a tiny flat hook. Then he filed a flat edge on the point of another safety pin. He hooked the bent pin with the former and carefully, a little at a time, coaxed the pin into a straight vertical position with the latter. He then took a tiny drill bit and hand twirled it once slightly into the matching hole in the card itself to bevel the edges of the hole so when I inserted the card it gently lined up nicely. The camera now works but I don't dare take the CF card out again but instead use only the usb cord to load photos onto my computer. Down the road some day when I am ready to buy a new camera, I might try taking the card out of the slot. Hope this helps.
deleting files on sd cards is the same a deleting any other file on a computer as long as the media is not protected against file deletion or file altering
usually sd cards as you used to find also in old floppy dics, have a tab or switch you need to set accordingly to allow file overwriting. inspection the sd card and make sure that the tiny switch or lock is in the off position, reinstall sd card in the reader or sd card drive and attempt to delete files by selecting them and hitting the del key or simple selecting them and right clicking to then select delete.
if the tab is in the off position try it in the "on" position and see if deletion can be accomplished. if neither works your sd card may be defective. contact the provider and have the warranty honored accordingly in within the warranty terms.
I'm assuming that you have the correct mounting sleeve. If not, you need the one that was delivered with the radio or an exact replacement. Also, once the receiver is inserted and locked into the sleeve, you need the appropriate "keys" to release it from the front.
There are some little metal "fingers" (tabs) that need to be gently bent inward until they securely contact the recesses built into the receiver case. The best technique is to push the tabs slightly from the outside and with one hand inside the sleeve, pull on them from the very tip. To insure that the case is centered, bend all of the tabs about an equal amount.
OK, if the memory card itself is locked, you might
sometimes get this error code. All you need to do is to take out the
memory card and switch the lever on the left side to the unlock.
the error is still displayed after you did the above, you might want to
try the card in another camera.
the card works in another camera . the problem is with your card reader
in your camera.
If you open you sd slot and look inside with a
sharp light , you should be able to see on the left side of the slot
there is a little copper or spring steel lever switch. This switch work
1. When no card is inserted / no write protection ,
the switch is open and thus the protection is off. 2. When locked
card is inserted , the tab is depressed and tells the camera that the
card is lock.
Contrary to popular belief ,the little tab on the
sd card is not an electronic switch and does not physically influence
the card operation itself. If you put a locked card into a camera
without a sd lock switch , you would still be able to use the card
It is incredible difficult to fix this switch because
of space limitations in the sd card. Look into the sd slot and if you
can see the switch , use a needle to pull the little tab down toward the
base of the camera by about 2mm or until it works being careful not to
If this does not resolve your problem , there might be a
short in the switch circuit and the camera will need to be disassembled
to resolve this error. This should cost no more than $50.
feel free to contact me if you need further information
check the SD card and see if the little tab on the side of it is slid to the position that says "lock" If you cant see the words, try just switching the tab to the other side. Since SD means Secure Digital, these cards wont do anything if the lock tab is not in the right position.