Sorry, what more information do you need?
I’ve got the same problem. I’ve got an HTC Desire (phone) using a 32GB Sandisk MicroSD card which has worked perfectly for about 2 years. Then suddenly at some point over the last few days, it’s gone weird. I am unable to permanently delete any files from the card. I’ve tried all of the possible ways of accessing/connecting the card that I can think of:
I try on the phone directly,
I connect the phone to a computer and mount the card - on my MacBook Pro, or I mount it on my wife’s Windows 7 laptop,
I take the card out and use an SD adapter in the card slot on the Mac, and in the Windows laptop
I use the card in an adapter in an external card reader and connect to via USB the Mac and the Windows laptop.
Every method I use allows me to delete the files, or so I think.
When I then put the card back in my phone, all the deleted files are there again. So I repeat the process and the same thing happens.
I then try to scan the card (connected via any of the above methods) using the Mac OS Disk Utility and it gives me the message:
Verify and Repair volume “Untitled”
Checking file system** /dev/disk3
** Phase 1 - Preparing FAT
** Phase 2 - Checking Directories
** Phase 3 - Checking for Orphan Clusters
24610 files, 473456 KiB free (29591 clusters)
Volume repair complete.Updating boot support partitions for the volume as required.
So then I try to delete files - still no joy. Then I try to format the disk via whichever method and again, the card looks like it’s formatted but when I put it back in the Desire and/or mount it on a Mac/Win laptop all the files are still there.
I’m not sure what other info I can give you but please help. Surely a Sandisk card, used very carefully, should last more than 2 years?? The reason I’m trying to delete files is that the card has only 462 MB left on it and I’m unable to backup my phone’s contents due to lack of space!