unable to unmount /mnt/mnt\0/mnt\0

[dazoe]

to get it to work i needed to change echo -n "\$xx\0" to echo -ne "\$xx\0"
this was on a raspberry pi zero w using buildroot

[fitu996]

What's your default shell?

The "$xx\0" shouldn't be interpreted by echo.

[dazoe]

Default shell was BusyBox's ash

[Robin-Sch]

I installed the script and added init=/sbin/overlayRoot.sh to grub and updated grub.

I get the error:

umount /mnt/sys/firmware/efi/efivars\0/mnt/sys\0/mnt/run\0/mnt/mnt\0/mnt\0: no mount point specified
[overlayRoot.sh] ERROR: could not umount old root
[overlayRoot.sh] there is something wrong with overlayRoot.sh. type exit and press enter to ignore and continue

Solution:
Reboot into recovery USB (pressing enter doesn't work because the file won't be saved to the disk).

Change echo -n "\$xx\0" to echo -ne "\$xx\0" (add an e).

OS: Arch Linux

[fitu996]

Fixed by a4e6398

Reopen the issue if there is not.