Rev. C eMMC size question

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1

I have a new Rev. C board and everything I have read indicates the eMMC is 4GB. However, after removing a few files (from Robert Nelson’s posts about freeing up some memory) and adding some others (a couple of node js packages), I checked the size with df and here is the result:

root@beaglebone:~# df -h

Filesystem Size Used Avail Use% Mounted on

rootfs 1.7G 1.2G 383M 76% /

udev 10M 0 10M 0% /dev

tmpfs 100M 588K 99M 1% /run

/dev/disk/by-uuid/10c4da64-555d-4cf9-b4b0-d39c75c9886e 1.7G 1.2G 383M 76% /

tmpfs 249M 0 249M 0% /dev/shm

tmpfs 249M 0 249M 0% /sys/fs/cgroup

tmpfs 100M 0 100M 0% /run/user

tmpfs 5.0M 0 5.0M 0% /run/lock

/dev/mmcblk0p1 96M 74M 22M 78% /boot/uboot

This looks like 2GB to me, not 4. How do I gain access to the other 2GB?

2

You need to resize the rootfs image to take up the rest of the eMMC. Whats left availible that is.

3

It looks to me like you have a Rev B with 2GB..

The factory flasher script calls sfdisk with:

1,96,0xe,*

4

Robert,
That’s what I thought but the box clearly says Rev C and the sticker on the side of the P8 headers says C as well.
I tried resizing as suggested:

root@beaglebone:~# sudo resize2fs /dev/mmcblk0p2

resize2fs 1.42.5 (29-Jul-2012)

The filesystem is already 444160 blocks long. Nothing to do!

So, what to do next??? Are there actually Rev C boards with 2GB eMMC?

5

So I looked up the number on the Micron website and sure enough, the eMMC is a 2GB. So, buyers out there, beware. I bought my BBB from Adafruit a couple of weeks back (had to wait on stock to arrive) specifically as a Rev C board and paid more for a Rev C board. I am a little bothered by the fact that I was sold a Rev C board that is marked as a Rev C board and yet it does not meet the Rev C specs.

6

So I looked up the number on the Micron website and sure enough, the eMMC is a 2GB. So, buyers out there, beware. I bought my BBB from Adafruit a couple of weeks back (had to wait on stock to arrive) specifically as a Rev C board and paid more for a Rev C board. I am a little bothered by the fact that I was sold a Rev C board that is marked as a Rev C board and yet it does not meet the Rev C specs.

Contact them asap, might end up being a bigger stocking issue.

7

So I looked up the number on the Micron website and sure enough, the eMMC is a 2GB. So, buyers out there, beware. I bought my BBB from Adafruit a couple of weeks back (had to wait on stock to arrive) specifically as a Rev C board and paid more for a Rev C board. I am a little bothered by the fact that I was sold a Rev C board that is marked as a Rev C board and yet it does not meet the Rev C specs.

Contact them asap, might end up being a bigger stocking issue.

I’ve posted on the Adafruit forum. Hopefully, this is an anomaly and not one piece of a big problem. For my use, the Rev B board will work but I would have liked the bigger eMMC.