DWU2 Loc: Phoenix Arizona area

I ran into a minor issue with reformatting an SD card in my Canon R7. It wouldn't format. I put it into the R7's other slot, and wouldn't format there, either. I put a different SD card into the R7 and it formatted fine. Next, I put the non-formattable card into my Canon 7d II and it formatted fine there. I moved that card back into the R7 and it formatted fine. I've put that card aside. What do you think - problem solved, or Don't Trust That Card!

twowindsbear

Maybe contact the card's manufacturer for advice?

uhaas2009

In my younger days I would use one memory card for any device. I had to stop this because newer device created conflicts. My camera can’t handle if the card was in an other body, could be a camera error-I don’t know.
In case I would be careful maybe exchange this card

davidrb Loc: Half way there on the 45th Parallel

[quote=DWU2]I ran into a minor issue with reformatting an SD card in my Canon R7. It wouldn't format. I put it into the R7's other slot, and wouldn't format there, either. I put a different SD card into the R7 and it formatted fine. Next, I put the non-formattable card into my Canon 7d II and it formatted fine there. I moved that card back into the R7 and it formatted fine. I've put that card aside. What do you think - problem solved, or Don't Trust That Card![/quote


Gremlins

fredpnm Loc: Corrales, NM

Perhaps you just unknowingly moved the lock slider from locked to unlock. Sometimes inserting or extracting a card from its slot moves that switch, especially if it slides really easily...

DWU2 Loc: Phoenix Arizona area

I don't think so, thanks - I did check for that.

Dikdik Loc: Winnipeg, Canada

I understand that some cards format slightly different in different cameras. If it formats in one and is readable in another, then I suspect the formatting is correct. I would have thought that all camera manufacturers would use identical formatting, but this may not be the case.

I would try the card out for a while to see if the format is OK before I'd use it for 'mission critical' photos. I've only had a few digital cameras and have not used cards in different cameras. The cards are usually part of the camera for life, and I download from the camera, not from the card. I'm not a pro photographer.

PHRubin Loc: Nashville TN USA

There is more than 1 way a card can be formatted. In the old days Windows used FAT (File Allocation Table), then FAT32, as well as NT. I don't know how Apple does it. Some devices cannot handle all methods and if a card is formatted in one it doesn't recognize, it just refuses to use that card/disc/etc.

JFCoupe Loc: Kent, Washington

I suggest inserting the suspect card in your R7 and taking a few casual shots around the house or yard, nothing that you would plan to keep. Then download the card and attempt to reformat it. If it works repeat a casual shoot, download and reformat. If all goes well, continue to use it. If any issues, just throw it away. Cards are pretty inexpensive nowadays.

User ID

Replies so far range from just plain common sense to rather typical UHH overthinking. I find the common sense replies more appealing.

A card thaz not trustworthy is useless. Useless stuff goes in the trash.

kbk

I would put the card in a home computer and look for odd files that are non-canon type files and delete them. Format the card in the computer. Should be fine to go in the camera.

User ID

I would format it in a pop up toaster before Id ever format it in a PC.

larryepage Loc: North Texas area

There's a whole lot you haven't told us that might make a difference in what I might suggest here. Since it apparently wasn't a new card when this all started, how old is it? Where and how was it used before? Did it ever cause any trouble before? Have you had trouble with any other cards in ypur R7? Is it a straight-up SD card, or is it a Micro-SD card in an adaptor? How important is it that this card work vs. just retiring it?

In the absence of knowing all this and other pertinent information, and presuming that you would really like for this card to work in your R7, I'm going to respectfully disagree with USERID and suggest that this is a great time to do a full format in your PC. Then run the full diagnostics that are available in Windows. See what happens. Before you do all that, you might want to put the card in the R7, go out in the back yard and take a bunch of pictures, then see if they will download to your PC without any problems.

My bet is that the problem you experienced was a one-time deal. If so, it was likely caused by either some user error or some sequence error, or you just stuck the card into the slot before your camera was fully awake.

If the card is really bad, I'm just about the last person that wants to encourage you to use it, then lise a bunch of pictures. But failures don't happen very often. Fortunately there are some things you can do to help identify whether your problem is real.

awesome14 Loc: UK

You might also consult an astrologer to see if Jupiter was aligned with Venus when all this occurred. That could explain a lot!

Sidwalkastronomy Loc: New Jersey Shore

I've always format a card in the device that's its going to be used in. I have 2 rebels 77D and T7i and I don't cross cards. Cards are cheap and why take a chance. I'm sure a call to manufacturer will solve issue.