UPDATED (June 2021): 17-distro multi-boot image for Pinephone (incl. 3GiB variant)

[robthebold]

Trying to expand the partition on my SD.  Tried using Gparted, but none of the OSes then boot, stays stuck on initial OS splash after choosing.

If I instead follow the instructions from @megous, both commands:

echo ", +" | sfdisk -n -N 2 /dev/mmcblk0
echo ", +" | sfdisk -N 2 /dev/mmcblk0

always gives me "Permission denied" in Ubuntu, even if using sudo, and trying with and without /dev/mmcblk0p2 mounted.
Any idea where I'm going wrong?

EDIT: I was putting sudo at the start of the line rather than after the pipe

You need to run those commands as root, so on Ubuntu or other "sudo" to-run-as-root-system, you'd type:

Code:

echo ", +" | sudo sfdisk -n -N 2 /dev/mmcblk0

and likewise for the "do it for real" command. IIRC if you're on Debian, you'd just "su root" and then do it all and "exit".

Of course, make sure that the device really is /dev/mmcblk0 -- I've got a USB reader for SD cards, and mine gets automounted to /dev/sdg. YMMV depending on how many other drive devices present, etc.