I have an older RouterBOARD 750G r3 device which had recognized a 16GB microSD card just fine for 2+ years.
On Monday, I wanted to switch that card to something a little smaller (since I was using it for SMB, and hardly ever storing anything on it). I ejected the disk from the System-> “Drives” and removed the card. Note, I didn’t think about SMB, but apparently the router detected the flash card was gone and inactivated the share.
Getting back to the problem, after putting in a new 2GB microSD card (gold pins up), the new microSD is not really recognized. The drive shows up, but the type is “unknown” the size free is 0b. If I try to format it, I get an action(6) error. I’ve rebooted, re-inserted, every combination. No luck, still a half empty entry in the Disks listing, and cannot do anything to format or use it.
After giving up on that, I re-inserted the 16GB microSD card I had been using. No changes to the card had ever been made. Now, it won’t load or be read either! It acts just like the 2GB card. It just won’t be read. I tried re-booting, re-inserting, and many combinations to no avail here either. The microSD slot just won’t read anything any more.
Is it something I did by ejecting while not deleting the shares in SMB first? Any attempt to format or use either microSD card results in action(6) error. Did I hose something up here? Is there any way to reset the state of the drive? Any and all advice welcome!
I could try to format the card in a camera, but don’t think it would matter one way or another. The problem is having the RB750Gr3 recognize the card.
Ishould have specified in my OP. There’s nothing wrong with either of the microSD cards. They are both formatted FAT32, and I can read/write to each card (using a USB adapter) using a computer (either Mac, Linux or WIndows). I should also note, if I use that USB adapter on the hEX router, I can see the microSD card just fine when plugged into the hEX’s USB port. It’s only having a problem when going in to the microSD slot.
Note, I could just leave it in USB port, but I only have a single adapter, and I use it in other places. So that is not ideal. What I’m looking for is some kind of reset or something I can do in a terminal or what not to reset the drive.
One thing I found odd, is that the cards insert pin side UP. It seems a bit odd, but when when inserted the other way, the microSD slot will not accept the card all the way into the router. Does that seem correct?
Thanks!. Yes. Pin side up slides most of the way in, but leaves 1 or 2 mm (1/16") so you can pull it back out. Pin side down doesn’t slide in but half way on the card (unless you would force it, but that would be a very bad idea).
Do you happen mean to use diskpart on a Windows machine (where the microSD is in the USB adapter), and use the “clean” command? Just verifying in case there is something else that is named clear that I’m unaware of.
I put the microSD card into an SD card adapter, and on a Windows machine, ran diskpart, select disk X, clean. After the clean, I ejected the disk and placed it back into Windows, and this time it found no drive information at all. The drive had to be partitioned / formatted to use. Again ejected the SD card w/ adapter
Next, I took microSD card out of adapter and placed it in the RB750Gr3’s microSD slot. The first attachment shows that disk ( From System → Disks from WebFig).
Next I clicked ‘Format’, and once there, the drop-down combo was SD, and I added a label (SMB), and clicked start. The second attachment shows the error. Notice how the drop down for “disk” has now become empty. It’s like the system ejected the disk. This is the same behavior as before.
What else can I try?
