No. As I said, it just said 'Coulnt' install'. I rebooted manually. Nothing happened. I will try installing again now after a reboot. Nope. Ahh - ok, it says the SD card is in use. I don't know what by as it is just started. lsof | grep mmc2 says nothing
ok I solved it. So for all you n810 owners. Under control panel, memory disable virtual memory. This locks the internal memory card. Then format the internal memory card. After fist install it will tell you that it can't install. Then reboot and run again. Then everything works as a sharm.