CF Card in not being read, can't format. Help?

[KimberWid]

I just purchased a used Canon EOS 7D {specifically, Canon DS126251} and since it came with no card, purchased a 32 gb SanDisk Extreme PRO CompactFlash Card, 4K video, UDMA7 enabled

Inserted card correctly, cameras says:

Card cannot be accessed. Reinsert/change the card or format card with camera.

Tried to format. Camera says:

Cannot format.

Change card.

According to where I bought the CF card, it's compatible with EOS 7D.

I've tried removing and reinserting the card. No luck.

Did I buy a lemon?

 

[Bobby49]

That sounds somewhat like a failed memory card. Do you have anywhere else that you can try the card, like a card reader attached to a computer?

 

[digitalcuriosity]

I could be they sold you a damaged camera and no CF card will work in it.

 

[Mark B.]

I just purchased a used Canon EOS 7D {specifically, Canon DS126251} and since it came with no card, purchased a 32 gb SanDisk Extreme PRO CompactFlash Card, 4K video, UDMA7 enabled

Inserted card correctly, cameras says:

Card cannot be accessed. Reinsert/change the card or format card with camera.

Tried to format. Camera says:

Cannot format.

Change card.

According to where I bought the CF card, it's compatible with EOS 7D.

I've tried removing and reinserting the card. No luck.

Did I buy a lemon?

Try the card in another camera if you can. If it works, it's the camera. If not, try another card in the camera. If that works, then the first card has failed.

 

[Enders Shadow]

One simple possibility. Check the position of the write protect tab on the SD card.

 

[Bobby49]

One simple possibility. Check the position of the write protect tab on the SD card.

Canon 7D does not accommodate any SD card. Only CF cards.

 

[Mark B.]

One simple possibility. Check the position of the write protect tab on the SD card.

 

[KariP]

I just purchased a used Canon EOS 7D {specifically, Canon DS126251} and since it came with no card, purchased a 32 gb SanDisk Extreme PRO CompactFlash Card, 4K video, UDMA7 enabled

Inserted card correctly, cameras says:

Card cannot be accessed. Reinsert/change the card or format card with camera.

Tried to format. Camera says:

Cannot format.

Change card.

According to where I bought the CF card, it's compatible with EOS 7D.

I've tried removing and reinserting the card. No luck.

Did I buy a lemon?

I can not check this, but it is possible that the new CF card works with 7DMkII - BUT NOT with the old 7D. In the shop they probably did not check this (?)

 

[Bobby49]

I can not check this, but it is possible that the new CF card works with 7DMkII - BUT NOT with the old 7D. In the shop they probably did not check this (?)

Anything is possible, but this is extremely unlikely.

 

[Kevin Omura]

I just purchased a used Canon EOS 7D {specifically, Canon DS126251} and since it came with no card, purchased a 32 gb SanDisk Extreme PRO CompactFlash Card, 4K video, UDMA7 enabled

Inserted card correctly, cameras says:

Card cannot be accessed. Reinsert/change the card or format card with camera.

Tried to format. Camera says:

Cannot format.

Change card.

According to where I bought the CF card, it's compatible with EOS 7D.

I've tried removing and reinserting the card. No luck.

Did I buy a lemon?

I can not check this, but it is possible that the new CF card works with 7DMkII - BUT NOT with the old 7D. In the shop they probably did not check this (?)

 

[Mark B.]

I just purchased a used Canon EOS 7D {specifically, Canon DS126251} and since it came with no card, purchased a 32 gb SanDisk Extreme PRO CompactFlash Card, 4K video, UDMA7 enabled

Inserted card correctly, cameras says:

Card cannot be accessed. Reinsert/change the card or format card with camera.

Tried to format. Camera says:

Cannot format.

Change card.

According to where I bought the CF card, it's compatible with EOS 7D.

I've tried removing and reinserting the card. No luck.

Did I buy a lemon?

I can not check this, but it is possible that the new CF card works with 7DMkII - BUT NOT with the old 7D. In the shop they probably did not check this (?)

There's no reason the card simply wouldn't work in the original 7D. I'm not aware of any card size limitation. From the little bit I know, anything up to 128GB will work. Regarding UDMA7, there was a firmware update (1.2.5) to the 7D to improve read/write speeds with these cards.

 

[KariP]

I just purchased a used Canon EOS 7D {specifically, Canon DS126251} and since it came with no card, purchased a 32 gb SanDisk Extreme PRO CompactFlash Card, 4K video, UDMA7 enabled

Inserted card correctly, cameras says:

Card cannot be accessed. Reinsert/change the card or format card with camera.

Tried to format. Camera says:

Cannot format.

Change card.

According to where I bought the CF card, it's compatible with EOS 7D.

I've tried removing and reinserting the card. No luck.

Did I buy a lemon?

I can not check this, but it is possible that the new CF card works with 7DMkII - BUT NOT with the old 7D. In the shop they probably did not check this (?)

There's no reason the card simply wouldn't work in the original 7D. I'm not aware of any card size limitation. From the little bit I know, anything up to 128GB will work. Regarding UDMA7, there was a firmware update (1.2.5) to the 7D to improve read/write speeds with these cards.

I did not remember those updates (my old 7D is unused nowadays)

BUT

Then there are some possibilities :

a) the firmware was never updated to make UDMA7 work - some people never do that

-b) some other basic and cheap CF is easy to try - if it works ... if it does not it might be the camera (or the pins bent)

c) the card can be tested with an other camera to see if it is the card and so on

Can not many other possibilities, but these come first...

 

[Mark B.]

I just purchased a used Canon EOS 7D {specifically, Canon DS126251} and since it came with no card, purchased a 32 gb SanDisk Extreme PRO CompactFlash Card, 4K video, UDMA7 enabled

Inserted card correctly, cameras says:

Card cannot be accessed. Reinsert/change the card or format card with camera.

Tried to format. Camera says:

Cannot format.

Change card.

According to where I bought the CF card, it's compatible with EOS 7D.

I've tried removing and reinserting the card. No luck.

Did I buy a lemon?

I can not check this, but it is possible that the new CF card works with 7DMkII - BUT NOT with the old 7D. In the shop they probably did not check this (?)

There's no reason the card simply wouldn't work in the original 7D. I'm not aware of any card size limitation. From the little bit I know, anything up to 128GB will work. Regarding UDMA7, there was a firmware update (1.2.5) to the 7D to improve read/write speeds with these cards.

I did not remember those updates (my old 7D is unused nowadays)

BUT

Then there are some possibilities :

a) the firmware was never updated to make UDMA7 work - some people never do that

The firmware update I linked to simply made UDMA7 cards read faster, implying that they already worked.

-b) some other basic and cheap CF is easy to try - if it works ... if it does not it might be the camera (or the pins bent)

c) the card can be tested with an other camera to see if it is the card and so on

I suggested both of these in one of my first replies. Not sure if the OP did this or not. Would be nice if there was some feedback, though.