I have a BBB Rev C (4 gig) but fdisk only shows that the eMMC has 1.8 gigs.

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1

I’m not even sure where to begin with this one. Fdisk really shouldn’t be showing wrong disk sizes and I’ve checked file-systems, deleted and rewrote the partition tables, deleted and created partitions.

Has anyone else had this strange problem before? Any more information I can provide.

Fdisk output.

`
root@beaglebone:/# fdisk -l
Disk /dev/mmcblk0: 14.7 GiB, 15719727104 bytes, 30702592 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
Disklabel type: dos
Disk identifier: 0xad20d647

Device Boot Start End Sectors Size Id Type
/dev/mmcblk0p1 * 8192 30702591 30694400 14.7G 83 Linux

Disk /dev/mmcblk1: 1.8 GiB, 1920991232 bytes, 3751936 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
Disklabel type: dos
Disk identifier: 0xe9000d91

Device Boot Start End Sectors Size Id Type
/dev/mmcblk1p1 2048 3751935 3749888 1.8G 83 Linux

Disk /dev/mmcblk1boot1: 1 MiB, 1048576 bytes, 2048 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 /dev/mmcblk1boot0: 1 MiB, 1048576 bytes, 2048 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

`

Version script.

root@beaglebone:/opt/scripts/tools# ./version.sh git:/opt/scripts/:[9e4538c8313aae2d2ff50b07ec5e0ee7685a840c] eeprom:[A335BNLT0A5C3313BBBK3434] dogtag:[BeagleBoard.org Debian Image 2017-09-21] bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot 2017.09-00003-g11d92ba68a] bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot 2017.09-rc2-00002-g7c9353] kernel:[4.4.88-ti-r125] nodejs:[v6.11.3] uboot_overlay_options:[enable_uboot_overlays=1] uboot_overlay_options:[uboot_overlay_pru=/lib/firmware/AM335X-PRU-RPROC-4-4-TI-00A0.dtbo] uboot_overlay_options:[enable_uboot_cape_universal=1] pkg:[bb-cape-overlays]:[4.4.20170921.0-0rcnee1~stretch+20170921] pkg:[bb-wl18xx-firmware]:[1.20170829-0rcnee1~stretch+20170829] pkg:[firmware-ti-connectivity]:[20170823-1rcnee0~stretch+20170830]

2

Is there any option in your fdisk to edit the disk geometry? Hard drives grew rapidly so numbers of heads, tracks, etc quickly outgrew the number of bits set aside to store them and the solution was to divide one number by 2 and multiply a different one by 2. Anyway the geometry is usually flexible.

3

0A5C is not a rev "C", it's rev "A" with only 2GB eMMC..

Regards,

4

That is interesting. So Adafruit must have sent me a SUPER old version