CARD Computer SD card can't format

grimtechnet

Today I received my CARD Computer and I'm loving it's design. I was playing around with the included apps and I ran into a problem with the notes app. I tried 3 different SD cards but none of them can be formatted. I get the following error message.

SD card mount failed
Press enter to try again
ctrl + q to quit
ctrl +f to format

Naturally, I press ctrl + f to format the card, but I get another error.

Failed to mount SD card, 
is it inserted?
Press enter to continue

Any tips for getting past these errors?

ajb2k3

What SDcards did you try?
Also use a proper formatting program to format the cards to MSDOS fat format.

grimtechnet

The SD cards I tried are shown below.

Micro Center Micro SD XC 128GB
Lexar Micro SD HC 4GB
SP Micro SD HC 4GB

sd cards

I took your advice and I used gparted on all of them. I created a msdos partition table, then created a fat16 primary partition table. I was seeing the same errors from my initial post.

I tried fat32 as well. I was seeing the same errors.

ajb2k3

The 128 won’t work as its way to big, the 4g should work. Do they work on a computer?

grimtechnet

Ok, 128GB too big, that makes sense. Yes the two cards work on a computer when I use a USB adapter. I can read and write to them both. Could it be the HC part that's incompatible? These are all cards I used to use on a GoPro camera so they have the SD HC attribute. Haven't had any luck yet with them on the Cardputer. I'm looking around for other SD cards to test.

ckcampbell248

@grimtechnet Did you ever solve this? I just got a new Cardputer and am experiencing the same result. I have tried two different 8GB cards formatted as FAT32 and also a 1GB card formatted as FAT and I get the same result with all of them. I tried both a quick format and a full format in Windows.

ckcampbell248

@ckcampbell248 Update...I think I solved my own problem. I believe the problem is with the Notepad app in the demo firmware. We tried several different SD cards that were known to be working in M5Launcher and they all failed on two Cardputers using the demo firmware. I installed Launcher on my device, and I am able to install .bin files from the SD card.