Homatics Box R 4K Plus

Help & Support Hardware
3119

I think we can reuse part of ceemmc infrastructure to use storage from emmc in little nicer way.

Use at your own risk ! Same applies to solution above.

mkdir -p /media/data
mount /dev/data /media/data
# or for Android 14
mount /dev/userdata /media/data
mkdir /media/data/coreelec_storage
systemctl stop kodi
rsync -ah --info=progress2 /storage/ /media/data/coreelec_storage/
umount /media/data

mf
nano /flash/config.ini

# add this line at the end of the file
coreelec='quiet toram disk=FOLDER=/dev/data'
# or for Android 14
coreelec='quiet toram disk=FOLDER=/dev/userdata'

# and reboot

# check everything was done correctly with command
mount

# before
#  /dev/sda1 on /flash type vfat (ro,.....)
#  /dev/sda2 on /storage type ext4 (rw,noatime)

# after
#  /dev/sda1 on /flash type vfat (ro,,.....)
#  /dev/data on /storage type ext4 (rw,noatime,resgid=1065)

# I also add this line in /storage/.config/autostart.sh
# to unmount storage partition from USB stick
mountpoint -q /media/STORAGE && umount /media/STORAGE

…
…

Looks like when booting from USB 2.0 port suspend/resume works better and stick is not remounted.

When booting from USB 3.0 port stick is remounted after resume with new name (sda1 → sdb1).

To get suspend/resume working extra script is needed /storage/.config/sleep.d/01-device-suspend.power.

#!/bin/sh
# /storage/.config/sleep.d/01-device-suspend.power

if [ ! -f /dev/SYSTEM ] || ! mount | grep -q "/dev/data on /storage"; then
  echo "squashfs SYSTEM file is not in ram (use toram bootloader parameter)"
  echo "or eMMC partial install is not used"
  exit 0
fi

case "$1" in
  pre)
    # unmount USB partitions
    for usb_device in /dev/disk/by-id/usb-*; do
      device=$(readlink -f $usb_device)
      grep -wq "^$device" /proc/mounts && umount $device
    done
    ;;
  post)
    finish=0
    cnt=0
    cnt_max=32
    while [ $cnt -lt $cnt_max ]; do
      if mountpoint -q /media/COREELEC; then
      	  major_minor=$(mountpoint -d /media/COREELEC)
      	  device=$(readlink -f /dev/block/$major_minor)
      	  umount /media/COREELEC
      	  mount -o ro $device /flash
      	  finish=$((finish+1))
      fi
      if mountpoint -q /media/STORAGE; then
      	 umount /media/STORAGE
      	 finish=$((finish+1))
      fi
      if [ $finish -eq 2 ]; then
      	 echo "all done in $cnt steps"
      	 break
      fi
      sleep 0.25
      cnt=$((cnt+1))
    done
    ;;
esac

To keep USB power always on this HW modification can be applied (on your own risk):

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