1
vote
1answer
257 views

Writing fails to MicroSD

I have a 16 gb Class 10 Ridata MicroSD card I bought on December which I use on my Galaxy Y phone. At first, it was working fine and fast. Now when I write to it, often times I get "Write Delay ...
5
votes
4answers
4k views

My 4 GB microSD card only allows me to use 1 GB

My phone came with a 4 GB microSD card. On the card it lists that 3 GB goes to Muve Music which is Cricket's music program, and I get 1 GB... Well, I don't pay for Muve Music, so why ...
7
votes
4answers
4k views

Is the lock mechanism on an SD card hardware, firmware, or software (driver,OS) enforced?

Where is the lock to read-only mode enforced with SD cards? Is this done inside the card itself physically, in the firmware of readers, or in the OS? (Some other place?)
2
votes
1answer
1k views

What is the difference between SD, SDHC and SDXC?

What is the difference between SD, SDHC and SDXC?
2
votes
1answer
2k views

Mount “locked” SD card as read-write in GNU/Linux

My Canon PowerShot A470 + CHDK can write to SD-cards that are "locked" (the lock switch is used to make the card bootable), but GNU/Linux `/dev/mmcblk1': Read-only file system (I'm using "Texas ...