San Disk 4GB Misro Sd No apparent memory

This could be a Hard disk memory,flash memory or sd card memory. 4gb is the capacity. San disk is a type or make.

The C643 works with SD cards, not with SDHC cards. You have to use SD cards 2GB and smaller.

You haven't told us what kind of camera it is, but I can guess at the problem. There are two possibilities.

1. Your camera will only read SD cards, not SDHC cards. You've just bought a new memory card, not noticing that it was SDHC. The new cards don't work in your camera, not because they or the camera are broken, but because they're not compatible.

Cards up to 2Gb are generally SD. Cards over 8Gb have to be SDHC. 4Gb cards can be either SD or SDHC, but are almost always SDHC because they're cheaper. (I would avoid the rare, expensive, and problematic 4Gb SD cards.)

Your solution is to go find a 2Gb card, and be extra sure that it doesn't say "SDHC" on it. (If it does, it probably means that they made a 4Gb card, but there were some error locations and so they disabled half of it and packaged it as a cheap-brand 2Gb.)

2. You formatted the card NTFS, whereas the camera needs FAT32. You can format the card using Windows, but there is a complication: Windows defaults to "NTFS" when formatting, but memory cards normally use FAT32. Before you attempted this, you should have connect the card, and checked the 'properties' on the drive that appears. It probably said "FAT32". In this case, you could have gone ahead and formatted the card, but be sure that you chose "FAT32" from the drop-down list. If you format it NTFS, your camera won't be able to read it!

In this case your solution would be to format the card again, but using the FAT32 format.

You might find it useful to check your camera on dpreview (dot) com, and see if the memory card type is shown as just SD or SD/SDHC.

I'm guessing you bought a new 4GB SDHC card. Although it looks exactly the same as a standard SD card, the format the card uses is very different. Unfortunately your camera was designed before the SDHC format came out. Sorry, but a SDHC card will not work with your camera.

You'll need to use standard SD cards (usually those 2GB or less). But if you really want to use a 4GB card, do a Google search for 4GB SD "non HC", with the non HC in quotes. Believe Transcend makes one.

up to 2gb sd cards are sd format 4gb are sdhc format . you camera will not write to sdhc and it is not a good idea to put in your camera .

In your phone, go to main menu, tools then memory card manager and format the card. To put music into the card, You can use a USB cable to connect to your phone or you can use a SD card reader

you should download memory retriever it fixes your memory card and retrieves your data. i had the same memory card and i thought it was from the memory card acting up so i got a new one. but it was kind of from both the phone and memory card but i downloaded the program and = ] my new memory card wasn't formatted so now am all good! both of them working because my san disk memory card wasn't working and it deleted all my data. so now it retrieved and now is working! give it a try! and tell me what happens

You may have answered your own question. There is a good chance that your memory card has reached the end of its life. You might try reformatting the card with the computer and then do the format in the camera. This has worked for me before.

connect the card in memory card reader and got to mycomputer-->right click-->manage-->disk management. see weather you memory size is correct or not if its different right click the memory card and delete the partation then create a new partation

i was done this to my san disk memory card

I have same problem with A1200 not recognize micro sd card.
some one help ,Please.
Thank - you.