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

[wibble]

Hello I made it to this step in the instructions

sudo echo ", +" | sfdisk -n -N 2 /dev/sdb2
sfdisk: cannot open /dev/sdb2: Permission denied

And when I try the next command I get

sudo echo ", +" | sfdisk -N 2 /dev/sdb2
sfdisk: cannot open /dev/sdb2: Permission denied


Suggestions?

Thanks

Where did that command come from? The elevated permissions from sudo only apply as far as the pipe '|' so sfdisk runs as the normal user, hence the permission denied. If you remove the first sudo, and insert one between the pipe and sfdisk, you'll probably get what was intended. As always when using sudo, make sure you know exactly what it's doing before running it!

UPDATE: It looks like you were trying to follow https://xnux.eu/log/#toc-resizing-the-pa...-the-image but using sudo, and changing the block device. I think you should be using /dev/sdb not /dev/sdb2 - the whole device not the second partition on that device.