我试图从 ubuntu 18.04 升级到 20.04。尝试升级时遇到以下错误。
the upgrade has aborted. the upgrade needs a total of free space on disk '/'
我发现了类似的情况这里但所讨论的分区不同。输出df-h如下；
Filesystem Size Used Avail Use% Mounted on
udev 3.8G 0 3.8G 0% /dev
tmpfs 774M 2.1M 771M 1% /run
/dev/nvme0n1p5 15G 12G 2.5G 83% /
tmpfs 3.8G 125M 3.7G 4% /dev/shm
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 3.8G 0 3.8G 0% /sys/fs/cgroup
/dev/loop0 141M 141M 0 100% /snap/gnome-3-26-1604/98
/dev/loop4 1.0M 1.0M 0 100% /snap/gnome-logs/81
/dev/loop1 15M 15M 0 100% /snap/gnome-characters/495
/dev/loop2 243M 243M 0 100% /snap/gnome-3-34-1804/27
/dev/loop3 161M 161M 0 100% /snap/gnome-3-28-1804/116
/dev/loop5 4.4M 4.4M 0 100% /snap/gnome-calculator/704
/dev/loop6 94M 94M 0 100% /snap/core/9066
/dev/loop7 49M 49M 0 100% /snap/gtk-common-themes/1474
/dev/loop9 1.0M 1.0M 0 100% /snap/gnome-logs/93
/dev/loop8 63M 63M 0 100% /snap/gtk-common-themes/1506
/dev/loop10 26M 26M 0 100% /snap/heroku/3883
/dev/loop11 55M 55M 0 100% /snap/core18/1754
/dev/loop13 2.5M 2.5M 0 100% /snap/gnome-calculator/730
/dev/loop12 157M 157M 0 100% /snap/gnome-3-28-1804/110
/dev/loop14 55M 55M 0 100% /snap/core18/1705
/dev/loop15 94M 94M 0 100% /snap/core/8935
/dev/loop16 25M 25M 0 100% /snap/heroku/3881
/dev/loop17 3.8M 3.8M 0 100% /snap/gnome-system-monitor/127
/dev/loop18 15M 15M 0 100% /snap/gnome-characters/399
/dev/loop19 3.8M 3.8M 0 100% /snap/gnome-system-monitor/135
/dev/loop20 141M 141M 0 100% /snap/gnome-3-26-1604/92
/dev/nvme0n1p7 78G 14G 60G 19% /home
/dev/nvme0n1p1 256M 66M 191M 26% /boot/efi
tmpfs 774M 16K 774M 1% /run/user/120
tmpfs 774M 48K 773M 1% /run/user/1000
我该如何解决这个问题？注意：我正在使用 Ubuntu 和 Widows 双启动。目标是从 18.04 升级到 20.04。