Hey,
now to something different… i got an message today, that there is no free space to install an update. 
I use a 64GB SD-Card… I have install OSMC with an OSMC-Installer and i thing it is based on qt-host-installer (see Screenshot)
Is there a way to change the partition size? Plz don’t tell me, that i have to install it again! 
Why do you think it is a partition size issue? The log you posted on posted on the Live TV jerks thread a couple weeks ago shows the partition is sized correctly…
====================== Diskspace =================== qZy25Yas
Filesystem Size Used Avail Use% Mounted on
devtmpfs 666M 0 666M 0% /dev
tmpfs 925M 8.9M 916M 1% /run
/dev/mmcblk0p2 58G 5.2G 50G 10% /
tmpfs 925M 0 925M 0% /dev/shm
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
/dev/mmcblk0p1 316M 62M 254M 20% /boot
---------------------- Diskspace END --------------- qZy25Yas
Is this a different RPi? Did you fill it up with recording on the SD?
qt-host-installer was the internal name I gave the installer which runs on your PC at the time. The one that runs on device is qt-target-installer.
We automatically create the partition during installation to utilise the full size of the SD card. So there isn’t any further storage to expand to.
I suggest you follow @darwindesign comments