I am using openwrt 22.03.5 on my C2600 router, and I have an external USB SSD connected to it. It has a single ext4 partition, mounted and accessible as /mnt/sda1.
I want to transfer the overlay partition to the disk, but without formatting it.
I could use gparted on my laptop and create the needed partitions without losing data. However I am not sure what partitions to create and their parameters.
I read this guide https://openwrt.org/docs/guide-user/additional-software/extroot_configuration which however has a first step to wipe the disk.
So what would be the equivalent step using gparted without wiping it?
You just need to create a new partition and specify its name:
The rest instructions should not require modification.
Thanks - I'm trying to understand what the command
parted -s /dev/sda -- mklabel gpt mkpart extroot 2048s -2048s
does exactly so I can create a similar partition with gparted.
I see it creates a gpt label, but I'm confused with the
mkpart extroot. Is there an "extroot" file system? Also for the start-end, what do the "2048s" mean?
2048s means start 2048 sectors (approximately 1 MB) from the start of the disk, and -2048s means the partition should go to 2048 sectors before the end of the disk. it's basically allocating the whole disk into one partition.
The first argument for
mkpart is the name of the GPT partition.
Worked perfectly, thanks!
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