Issue with new 64gb SD card Not Recognized by PC Adapter

[Nintendo1889]

I wasn't sure of the right place to post this, couldn't find the forum moderator to pm, and I can't post in Android Questions for some reason, so I am posting this here.

I bought a 64gb sandisk SD card that was new but the package was opened, so it might be a counterfeit. My computer doesn't recognize it when I use the microsd transflash to sdxc/sdhc adapter that it came with or with a dedicated usb adapter. My pc does recognize a 32gb and a 16gb sd card with the dedicated adapter.

It is recognized by my LG Optimus L70 running kitkat. The issue I have is how do I copy over files on the ext4 link2sd partition to the new card? I can copy over the fat32 files by sharing them with the droid smb server, but wouldn't the ext4 Linux permissions be lost when shared on my wifi lan? I have yet to find a "root" smb server or ftp server that can share the /data partition, but I'm still looking.

Is this normal behavior for a 64gb sdxc card?

 

[Nintendo1889]

It seems that this card is either junk/fake or was simply too new, after plugging it in to a different computer, it works and works on the first computer I tries it on. Now I'm having problems imaging/copying files from one SD card to another. It looks like I might have to unlink all apps and back them up (due to the lack of space) then copy all files as listed in the op, then recreate the ext partition and relink them all. Whenever I copy the SD card using Linux' dd command, the ext4 partition is not recognized. 😢

 

[m-cman]

I recently purchased a Samsung SDXC 64gb card on eBay that was accepted by all my devices and showed 64gb available space (less the overhead). I couldn't load more than 4gb of data. After 3 days of trying, thinking I was screwing up in some way, I found out it was a fake 4gb card made to look like a 64gb card with software. Do a search on fake SD cards. There is a long thread with much more info and detail.