Long story so bear with me. Have a 64GB Amazon Fire HD 8 Tablet a few months ago. Purchased a TeamGroup 128 GB Type 10 SD card, etc.

When I installed the SD Card in the Amazon Tablet, at that time I remember it only gave me the option to format it as an expansion on the Fire Tablet's internal memory, not as an extra, removable storage item. (I see now in the tablet it has the option to format it as expansion to the internal memory or a removable storage device).

Everything worked fine for the last few months. Was able to SAVE 60GB worth of videos, .pdf docs, epub books, etc. on the card. I believe Amazon's UI formats these cards as GPT format vs. FAT32 or NTFS or exFAT).

4 days ago I turned the tablet off and plugged it in to charge (wasn't low on power, etc. just wanted to charge it faster, etc.) When I went to TURN it on, it booted up but then it gave a notification "Unsupported sd card. Please remove and reinsert it or format it, etc."

Obviously I didn't want to format it and lose everything, so I removed it and reinserted it, restarted the tablet, etc. and no dice. It says it's unsupported and wants me to format it.

Not wanting to lose anything I plugged the SD card into my Win 10 computer and it likewise cannot access the card and asks if I want to format it.

Long story short I can't access it on any device. I've downloaded and run multiple card recovery software's and none of them can provide an accurate list of the contents of the card but I believe the card is still structurally sound and surface scans and bad sector scans return (programs can read the correct size, etc) it's clean.

Pertinent information: Disk Management in Windows shows it as Disk 1 with two partitions but not volume info. One 16MB partition and one 116GB partition. They both say Primary and they both say Healthy. There's no drive letter assigned to it and I can't assign one (it's greyed out). It even says it's "Read Only" (I've checked the switch and it's not and used a couple DIFFERENT micro SD card adapters to prove it) See Screenshot.

The partitions on the SD Card appear to be GPT format.

I've used CMD prompt to try and remove the read only, it remains. I've tried using various "repair" softwares to try and change the Partitions to MBR from GPT and they all throw an error (proably because it's locked as Read Only).

I've used the CMD prompt to try and remove the Read Only "attribute" and it says it completes but still shows it's "read only".

I've tried to run multiple recovery programs and they all find data on the drive but again, I believe Amazon either encrypted the SD Card somehow with it's GPT partition, etc. because the data it finds it says are .txt files and SWF videos and I've never had any of those on the card.

For kicks and giggles I did try to just format the cards in Windows with QUICK Format and even that fails again because I believe it's locked to being read or written.

See screenshots for other info from software, etc. that gives details (the card isn't dead but has the two weird partitions, etc.) but at this point I'm just looking for a hail mary to get this card unlocked/usable so I can actually pull the stuff off, reformat it and use it NOT as an extension to the tablet but as removable memory.

Looked up a ton of how to's but nothing has worked so far.Ok, this might sound silly, but be sure that you have not set your SD card's switch into read-only mode. Take a look, I was messing with an SD card that I thought was junk for the longest time, and had let it sit in a drawer for a couple of months. Turns out the switch was on read-only mode.

On a side note, you might want to try using DiskPart to try to "clean" the drive. Watch a video or two on how to PROPERLY use DiskPart if you do not know how to already, as it is not a user-friendly piece of software, but it is quite powerful.