SD Card - files disappear when removed from computer

[scottyroberts]

Hello - I've got a problem that just popped up today with one of my SD cards here's what happens:

I write files to the SD card successfully, I can access the files on the SD card (in this case video files and they play fine). When I remove the SD card from my PC and put it back in, the files have disappeared.

I've tried this with a separate laptop and the exact same thing happens, write files, access them, remove SD card - files are gone.

This only just started happening today, the SD card has been fine up till now - and there are files on the SD card that are there from before this started happening that do not disappear when the SD card is removed.

I'm baffled tbh, I would've thought if the card was dead it could no longer write/read at all, but it's just so strange that I can play the videos I copied over, but as soon as I remove the card they are gone. Can anyone offer any ideas on what is wrong with the card?

Thanks for your help.

 

[clutchc]

Are you using the "safe to remove" function in Windows before ejecting the SD card?

 

[scottyroberts]

No I'm not - over the many years I've used many, many different SD cards, that has never been an issue because they're hot-swappable. I think that's one of the main features of the format if I'm not mistaken. As long as the card isn't in use.

 

[clutchc]

Hot swappable simply means it can be inserted and removed without powering down the system. You still should use the safe-to-remove feature to be sure the OS has written all the data to the card's memory chips. Not only do you risk losing the data by randomly inserting/removing the card w/o using the S-T-R feature, you risk corrupting the card.

 

[scottyroberts]

Right. ok.