After writing the image to the 8G microSD-card, initial setup of network and installation of git (with apt-get) I could not install anything else since I was out of diskspace. This confused me. But df -h shows me that /dev/mmcblk0 has a size of just under 1G. /dev/mmcblk0p1 has a size of 40M.

So I got a card with roughly 7G unused and unaccessible. How do I get hold of it?

When I insert the card in my laptop (Ubuntu) it does no longer automount itself and when I try to get some info about it I get this with parted and lsblk:

$ sudo parted -l /dev/mmcblk0p1
Model: ATA HTS721080G9SA00 (scsi)
Disk /dev/sda: 80.0GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  76.8GB  76.8GB  primary   ext4            boot
 2      76.8GB  80.0GB  3219MB  extended
 5      76.8GB  80.0GB  3219MB  logical   linux-swap(v1)

Error: /dev/mmcblk0: unrecognised disk label                              

$ sudo lsblk 
sda           8:0    0  74.5G  0 disk 
├─sda1        8:1    0  71.5G  0 part /
├─sda2        8:2    0     1K  0 part 
└─sda5        8:5    0     3G  0 part [SWAP]
sr0          11:0    1  1024M  0 rom  
mmcblk0     179:0    0   7.4G  0 disk 
└─mmcblk0p1 179:1    0   7.4G  0 part 

What can I do:

  • Could I resize the disk in the current installation?
  • Could I do a new installation an during the installation procedure set the size of the final result?
  • Could I create new partitions in the unpartitioned area and move the OS to that partition?

1 Answer 1


If you install ev3dev with an image file dated 1 May, 2015 or later, it should automatically expand the root partition to fill the space available on the SD card. Older releases are no longer supported.

If it does not do this, you should report a bug a https://github.com/ev3dev/ev3dev/issues. Be sure to read http://www.ev3dev.org/support/#github-issues first.

  • May 10? So in 2 days?
    – UlfR
    Commented May 8, 2015 at 5:51
  • 1
    Oops. that was supposed to be 1 May. I've corrected it. Commented May 8, 2015 at 15:14

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