Synology DS216+II eSata as a volume on DSM 7.2

synology-drive-hack.sh

# THANKS TO:
# https://www.casler.org/wordpress/synology-ssd-cache-on-external-devices/
# https://www.youtube.com/watch?v=KvW6LRw1RZs

# THESE ARE THE synoinfo.conf CHANGES I MADE:
# DEFAULT:
maxdisks="2"
internalportcfg="0x3" # 0000 0011
esataportcfg="0x4"    # 0000 0100

# CHANGES:
maxdisks="3"
internalportcfg="0x7" # 0000 0111
esataportcfg="0x0"    # 0000 0011  


cd /dev
mount -t vfat synoboot1 /mnt/synob1
cd /mnt/synob1
# copy the rd.gz file somewhere SAFE

# later, on other dev linux machine:
mkdir packed
mkdir unpacked

cd unpacked
xzcat /home/user/rd20231111/rd.gz | sudo cpio -idm

# now, modify:
sudo nano etc.defaults/synoinfo.conf

# repack
cd unpacked/
sudo find . | sudo cpio -o -H newc -R root:root | lzma > /home/user/rd20231111/packed/rd.gz

# copy the new rd.gz file to /mnt/synob1 on synology. MAKE SURE ITS OWNED BY ROOT:ROOT
chown root:root rd.gz.new
rm rd.gz
mv rd.gz.new rd.gz

# CHANGE these for good measure on the machine itself. These are seperate changes from rd.gz:
nano /etc.defaults/synoinfo.conf
nano /etc/synoinfo.conf

# reboot
reboot

Hey thank you for this, though after restarting Synology detects there is an unused 3rd drive: "The system detected a drive (Drive 3) that is not in use. You can go to Storage Manager to manage this drive" but as a caveat, the Storage manager application completely disappeared. Any ideas apart from reverting all changes?