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My SD card if not recognized as dev/sdX, instead it is recognised as dev/mmcblk0, which I understand is okay. The problem is that I'm trying to put an Angstrom image to my beaglebone and according to the instruction,

xz -dkc Angstrom-Cloud9-IDE-eglibc-ipk-v2011.10-core-beaglebone-r0.img.xz > /dev/sdX

I'm supposed to find an sdX that represents my SD card. I'm new to this so I'm not sure what's wrong. Any advise is appreciated.

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  • What does sudo fdisk -l give you?
    – Bert
    Apr 30, 2013 at 13:54

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Make sure you unmount the card using sudo umount /dev/mmcblk0, and you can write the image file to /dev/mmcxxxx just like you would a using /dev/sdx

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  • Thanks Bert for the reply, Thats the result for sudo fdisk -l I posted what counts cause its too big Disk /dev/mmcblk0: 7822 MB, 7822376960 bytes 4 heads, 16 sectors/track, 238720 cylinders, total 15278080 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/mmcblk0p1 * 63 144584 72261 c W95 FAT32 (LBA) /dev/mmcblk0p2 147456 7127039 3489792 83 Linux
    – Amr
    Apr 30, 2013 at 14:16
  • The px at the end of those stands for partition - you want to leave that part off when you're writing the image
    – Bert
    Apr 30, 2013 at 15:17

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