Hello,

Try https://github.com/ungureanuvladvictor/BBBlfs to flash directly the 
eMMC.

On Wednesday, November 12, 2014 11:42:59 PM UTC+1, Christopher Greer wrote:
>
>
> I've got a BBB (rev C) and I've been trying different images. As I was 
> learning to flash it, I've gotten one of the boards in a state where it 
> will boot off the microSD card, but not off the emmc. When there is no card 
> inserted into the BBB, the power LED comes on steady, but there is no 
> output on the serial terminal and none of the LEDs seem to work. However, 
> when booting from a SD card, everything seems to more or less behave.
>
> I haven't booted on the SD card and tried to access the emmc, since I'm 
> not entirely sure on how to do that. 
>
> I've attached the output of running a flasher SD card image that seems to 
> complete normally. The SDcard seems fine; I've used it to flash another BBB 
> just fine. The particular image on the SD card doesn't seem to matter 
> either.
>
> There is one section of the output that seems suspicious, which I've 
> copied from the attachment. It seems like the emmc partition table is 
> somehow corrupted? I'm new to this though, so I'll defer to anyone who 
> knows more.
>
> Thanks.
>
> -----------------------------
> dd if=/opt/backup/uboot/u-boot.img of=/dev/mmcblk1 count=2 seek=1 
> conv=notrunc bs=384k
> -----------------------------
> 0+1 records in
> 0+1 records out
> 375372 bytes (375 kB) copied, 0.0571357 s, 6.6 MB/s
> Formatting: /dev/mmcblk1
> Checking that no[   20.440917]  mmcblk1: unknown partition table
> -one is using this disk right now ...
> OK
>
> Dis[   20.451158]  mmcblk1: p1 p2
> k /dev/mmcblk1: 118016 cylinders, 4 heads, 16 sectors/track
>
> sfdisk: ERROR: sector 3069653513 does not have an msdos signature
>  /dev/mmcblk1: unrecognized partition table type
> Old situation:
> No partitions found
> New situation:
> Units = mebibytes of 1048576 bytes, blocks of 1024 bytes, counting from 0
>
>    Device Boot Start   End    MiB    #blocks   Id  System
> /dev/mmcblk1p1   *     1     96     96      98304    e  W95 FAT16 (LBA)
> /dev/mmcblk1p2        97   3687   3591    3677184   83  Linux
> /dev/mmcblk1p3         0      -      0          0    0  Empty
> /dev/mmcblk1p4         0      -      0          0    0  Empty
> Successfully wrote the new partition table
>
> Re-reading the partition table ...
>
> If you created or changed a DOS partition, /dev/foo7, say, then use dd(1)
> to zero the first 512 bytes:  dd if=/dev/zero of=/dev/foo7 bs=512 count=1
> (See fdisk(8).)
> mkfs.vfat -F 16 /dev/mmcblk1p1 -n BEAGLEBONE
> -----------------------------
> mkfs.vfat 3.0.13 (30 Jun 2012)
> -----------------------------
> mkfs.ext4 /dev/mmcblk1p2 -L rootfs
> -----------------------------
> mke2fs 1.42.5 (29-Jul-2012)
> ext2fs_check_if_mount: Can't check if filesystem is mounted due to missing 
> mtab file while determining whether /dev/mmcblk1p2 is mounted.
> Discarding device blocks: done
> Filesystem label=rootfs
>

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