Micro SD Card Problem

Robm1955

I have just bought a 64gb micro sd card with adaptor, which I want to put media on for my holiday. I put the brand new card in my card reader, and then into my pc. The card was not recognised in any of the usb ports I used. I have a Windows 10 pc, and thought it might be because of some update or something, so I re-booted my pc. I tried inserting the card again. This time, I got the message,'the card must be formatted before it can be used', so I pressed ok to format it. It brought the format dialogue up, and I clicked start. Got the usual warning about all data being lost, and clicked ok. Then I got the error message, that Windows can't continue to format the card. Brought the card to work, at which I use a Windows 7 pc, and the card was read straight away. I've connected other devices to my pc at home, so the usb ports are working. My other thought, is the card reader, but if thats the case, how did it read the card, and say it needs formatting? Any ideas would be great.

Stoke

You using a USB card reader or built-in. I find the built-in ones are notoriously ropey for some reason. There's no logical explanation but they never seem to work properly. Bad drivers I imagine.

It might have been able to read the partition table which usually resides in the first block. This is where Linux and dmesg can be a dream. Using Windows you're a bit stuck. I suggest buying a Poundland card reader and giving that a go.

Robm1955

Thanks Stoke. Yes I'm using a USB card reader. Funilly enough. I had the same problem with the card in my mp3 player. It wouldn't read the card in the ready, but if I put it back in my mp3 player, and connected that, it did. I'll try a pounland one, if I can find one.

Johno100

Also worth going into Device Manager and disabling then re-enabling the SD Host Adaptor (some devices will list it under Memory Technology Devices).

Stoke

It might be a bad card. They happen every so often.

ChrisK....._3

I have bought 3 cards from Wish.com - 3 different card, 3 different compaies, 3 different occasions
NONE of which worked
I get the impression that only about 10% of memory cards produced actually work and sold on full retail - the other 90% are sold by Wish.com
I did get my money back though

Stoke

ChrisK..... wrote: »

I have bought 3 cards from Wish.com - 3 different card, 3 different compaies, 3 different occasions
NONE of which worked
I get the impression that only about 10% of memory cards produced actually work and sold on full retail - the other 90% are sold by Wish.com
I did get my money back though

That's fairly poor lol

clangnuts

ChrisK..... wrote: »

I have bought 3 cards from Wish.com - 3 different card, 3 different compaies, 3 different occasions
NONE of which worked
I get the impression that only about 10% of memory cards produced actually work and sold on full retail - the other 90% are sold by Wish.com
I did get my money back though

They are probably counterfeit cards. There's a lot around.

If you value your data (photos) then only use genuine cards.

motorguy

Robm1955 wrote: »

I have just bought a 64gb micro sd card with adaptor, which I want to put media on for my holiday. I put the brand new card in my card reader, and then into my pc. The card was not recognised in any of the usb ports I used. I have a Windows 10 pc, and thought it might be because of some update or something, so I re-booted my pc. I tried inserting the card again. This time, I got the message,'the card must be formatted before it can be used', so I pressed ok to format it. It brought the format dialogue up, and I clicked start. Got the usual warning about all data being lost, and clicked ok. Then I got the error message, that Windows can't continue to format the card. Brought the card to work, at which I use a Windows 7 pc, and the card was read straight away. I've connected other devices to my pc at home, so the usb ports are working. My other thought, is the card reader, but if thats the case, how did it read the card, and say it needs formatting? Any ideas would be great.

Is it an SDXC card on an SDHC card?

Also, what size is the card?

I've a close to new HP Envy 13 running Windows 10 that wont read SDXC cards, which happliy run on other (older) Win 10 machines i have, but quite happily runs SDHC cards.

Stoke

clangnuts wrote: »

They are probably counterfeit cards. There's a lot around.

If you value your data (photos) then only use genuine cards.

I've used counterfeit cards in situations where data non-volatility isn't important.

Johnmcl7

motorguy wrote: »

Is it an SDXC card on an SDHC card?

Also, what size is the card?

I've a close to new HP Envy 13 running Windows 10 that wont read SDXC cards, which happliy run on other (older) Win 10 machines i have, but quite happily runs SDHC cards.

That was my thought as well as the OP has mentioned it's a 64GB card which would make it SDXC and even though it's not a new standard I still occasionally come across readers that don't work with it.

Robm1955 - SD cards between 4GB and 32GB are SDHC while 64GB are a different standard called SDXC. Physically the cards are exactly the same but internally they're different and if you put an SDXC card in a device that isn't compatible with the standard, it won't work.

John