Hi! Icecat with Rust may have long time installing. In my PC Intel 2.16GHZ - even for 1 day. Swap: I configured swap with this line under (operating-system): (operating-system ....   (swap-devices '("/dev/sda2")) ... ) You need to part your disk and also mkswap, swapon  on the /dev/sda2 or another. Look at manual 6.1.4.3 Disk Partitioning Jan 7, 2019, 6:59 AM by kumagusu08@gmail.com: > Thank you. It's finished while I'm going out. > > I found my guix system has no swap. I think swap setting is necessary in file-systems configuration. > >