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mmc0: Timeout - Help? No SD card reader!

Former Member

Hey. I installed Raspbian on my Pi a few months back, but of course it broke down (happens to me a lot).

 

Now I get a mmc0: Timeout waiting for hardware interrupt - cmd13 OR cmd12

I do not have an SD card reader, so I can't put a new OS on it, so what can I do? Is it possible to do it through USB through the Pi? Or hook up to WiFi using the dongle, then download the file and burn it on the SD card?

 

Any help would be appreciated. Thanks! image

  • Is it possible to do it through USB through the Pi? Or hook up to WiFi using the dongle, then download the file and burn it on the SD card?

    I'm pretty sure you can't do any of those things. You really need to be able to boot off the SD card. I hate to point this out, but an SD card reader/writer is about $10. It is a worthwhile thing to purchase.Don't mean to be offensive in any way, but if you can spare/get/borrow $10, that's pretty much your option.

     

    Mike

  • in reply to mconners

    Hey Michael

     

    Yeah I know they're dirt cheap, but if I were to get one, I would have to wait till like Monday or Tuesday. Money isn't an issue here at all image

    I just wanted to know it if was possible. My Surface Pro 3 only has a Micro SD card reader/writer, but I don't have a Micro SD (including adapter), so I can't do it that way either.

  • in reply to Former Member

    Yeah. I think that's your only option. Unless you have a buddy with a reader.

     

    Like I said, don't mean to offend, sometimes it's a kid who saved every penny he could to buy the pi, and can't spare the 10 bucks.

    You just never know who you're responding to. image

     

     

    Mike

  • There are a number of possibilities.  One is that the SD card has gone bad, in which case you need to rewrite the OS image to your existing SD card or to a new one.  Either way you need an SD card reader as Mike has said.  Another is that the SD card socket is making poor contact.  There's an item about this at the RasPi Troubleshooting Wiki: http://elinux.org/R-Pi_Troubleshooting#Pi_boots_sometimes_but_not_always  The SD card socket has very fragile pins, so be careful.

     

    The easiest way to screw up an SD card is to turn off RasPi power without doing a "shutdown" first to flush the disk cache.  The GNU command is "sudo shutdown -h now".  GUIs usually have a shutdown command you can click somewhere.

     

    Mike is correct that the only way to boot RasPi is from a working SD card.  Once the boot process is underway it's possible to mount other drives, but I've never done it.  RasPi always starts with the SD card.

  • in reply to johnbeetem

    As a non-typical configuration, I have some of my 'PIs boot from the SD and then work from NFS. So, once they are booted, I have the raspberry pi capable of removing the SD card while it is on and then inserting a new SD card to either read or write.

    However this does require a working boot-NFS SD card, as wel as the setup with the server for DHCP and NFS-root.