|I went through a few models of SD card readers, thinking they were breaking. It seems that my computer is at the source of the problem. My USB SD card readers will very often fail. |
Sometimes, they will mount, and either fail in the middle of a lenghty writing or reading operation, or before a writing operation begins. At other times, it will simply fail to mount whatsoever.
Windows will prompt to insert a disk when trying to access the drive, or will show an empty drive with zero storage capacity. Linux will go "Error mounting: mount: /dev/sdc1: can't read superblock".
I can tell that my SD cards are healthy and that the SD card readers I used are functional since they work on the machines at work, college, etc.
A few facts that might help figure it out:
- My computer seems to have a harder time with USB mass storage than healthier or more recent machines. For example, I've had a portable USB-powered hard drive fail on my computer after a year of usage, but it seemed to work much better on my college computer. The portable drive had the exact same behavior when it started failing, but it worked fine for a year. SD Card readers start having that behavior when I first use them.
- I have a relatively old machine, with which I experienced a bit. My front onboard USB controller seems to be defective. USB devices have a much better chance working consistently when I plug them into the back onboard USB controller. I have no clue as to why. I tried cleaning all the dust, unplugging and replugging everything inside and it brought no behavior change whatsoever.
- I had to replace my power supply at some point, the old one got fried. This one is a 500 W 24 pins, with the last 4 pins that can be removed from the connector. My motherboard only has a 20 pins plug. I don't know if that affects things at all.
- For some reason, my computer is sometimes unable to boot if I configure the BIOS to support USB Legacy (mouse, keyboard and mass storage) and my external hard drive is plugged in. It will stop responding before the memory test. It did that with all my external drives, but at random times.
-I have a PCI USB extension card. Devices have the same behavior if I connect them on the extension card as when I connect them to the onboard USB.
I should probably replace my machine, but I don't have the means right now and I have to deal with this one for now. It is old and obsolete, but all the pieces seem to be functionning and this isn't normal behavior even for an old machine.
The product I'm currently using is a Nexxtech All-in-1 Card Reader 8000946 USB 5V. There were a few others from different brands which I've used before, but I can't recall the brands and models.
Please help. Thank you.