expand rootfs to sd card.

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1

Can i expand the rootfs to an sd card if im booting from the emmc or can i only do this if im booting from the sd card?

2

You can pull your rootfs from anywhere you like so long as it is supported. SDcard, NFS share( network ) USB, and perhaps I am forgetting one or two options.

http://unix.stackexchange.com/questions/87580/partition-scheme-for-installation-of-debian

Although, we’re talking flash media here, so I would strongly suggest you go without a swap disk.

Typically, it is easiest, and most common to mount the /home directory from additional media. In other cases, someone may mount /var/log on its own partition too. You can do this with just about any directory I think, but it become more complex as sometimes it not always possible to remount part of the file system on the system its self while it is running.

3

ok thanks for your reply. I definitely wan to go with the easiest route so i will boot from sd card instead.

4

Your call. Just curious, why do you need or want to increase your file system size ? The reason I ask is because for increasing the size for say /home is rather trivial. Just 3-4 simple steps such as . . .

  1. partition and format the new media.
  2. mount the new media in a temporary location.
  3. copy the whole of /home to the new media - then unmount.
  4. edit /etc/fstab to reflect the changes- Pointing to the new media.

A quick google search would yield tons of accurate results. As in step by step how to’s.

5

I want to expand root so i can install Qt embedded on my beagle bone. Im building it natively and I got a “no space left on device” error when installing.

6

What was the file name of the "img" did you installed, and where did
you install it to: microSD or eMMC..

Regards,

7

I was installing the qt widget library using
wget http:``//jaist``.dl.sourceforge.net``/project/qwt/qwt/6``.1.0``/qwt-6``.1.0.``tar``.bz2
I tried to build and install it on the eMMC.

8

The "os"..

For the "eMMC" most "flasher" scripts setup the full partition.. You
either get 2gb or 4gb on the eMMC...

Regards,

9

yeah i have 4gb on eMMC but its not enough to build all the qt stuff.

10

Just boot off a big microSD card..

Regards,

11

I booted from an sdcard and ran the following commands grow the partition to the entire size of the sdcard(16GB)

sudo cd /opt/scripts/tools sudo git pull sudo ./grow_partition.sh sudo shutdown -r now

after reboot i ran
df -h

but the rootfs shows its size as 1.6G and im using 1.5G. I was expecting to see size at around 16G so I dont think it expanded the partition. am i missing something??

12

Try again, with a 16GB card, it'll take a little bit for the 'expand'
function to work on extX..

Regards,

13

thanks, works now.