我知道这个问题已经被问了很多次了，但我无法找到解决我的问题的方法。
正如标题所示，我最近安装了 ubuntu 20.04，与 Windows 10 一起双启动。昨天我正在为 python 安装 anaconda，一切完成后，我收到消息“FILEROOT 剩余 600 MB 内存”（抱歉，我没有它的屏幕截图）。进一步查看后，我发现主目录的存储空间确实较少。以下是终端上 df -aTh 的输出：
Filesystem Type Size Used Avail Use% Mounted on
sysfs sysfs 0 0 0 - /sys
proc proc 0 0 0 - /proc
udev devtmpfs 3.8G 0 3.8G 0% /dev
devpts devpts 0 0 0 - /dev/pts
tmpfs tmpfs 769M 2.3M 767M 1% /run
/dev/nvme0n1p5 ext4 16G 14G 1.3G 92% /
securityfs securityfs 0 0 0 - /sys/kernel/security
tmpfs tmpfs 3.8G 0 3.8G 0% /dev/shm
tmpfs tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs tmpfs 3.8G 0 3.8G 0% /sys/fs/cgroup
cgroup2 cgroup2 0 0 0 - /sys/fs/cgroup/unified
cgroup cgroup 0 0 0 - /sys/fs/cgroup/systemd
pstore pstore 0 0 0 - /sys/fs/pstore
efivarfs efivarfs 0 0 0 - /sys/firmware/efi/efivars
none bpf 0 0 0 - /sys/fs/bpf
cgroup cgroup 0 0 0 - /sys/fs/cgroup/hugetlb
cgroup cgroup 0 0 0 - /sys/fs/cgroup/cpuset
cgroup cgroup 0 0 0 - /sys/fs/cgroup/rdma
cgroup cgroup 0 0 0 - /sys/fs/cgroup/cpu,cpuacct
cgroup cgroup 0 0 0 - /sys/fs/cgroup/pids
cgroup cgroup 0 0 0 - /sys/fs/cgroup/devices
cgroup cgroup 0 0 0 - /sys/fs/cgroup/memory
cgroup cgroup 0 0 0 - /sys/fs/cgroup/perf_event
cgroup cgroup 0 0 0 - /sys/fs/cgroup/net_cls,net_prio
cgroup cgroup 0 0 0 - /sys/fs/cgroup/blkio
cgroup cgroup 0 0 0 - /sys/fs/cgroup/freezer
systemd-1 autofs 0 0 0 - /proc/sys/fs/binfmt_misc
hugetlbfs hugetlbfs 0 0 0 - /dev/hugepages
mqueue mqueue 0 0 0 - /dev/mqueue
debugfs debugfs 0 0 0 - /sys/kernel/debug
tracefs tracefs 0 0 0 - /sys/kernel/tracing
fusectl fusectl 0 0 0 - /sys/fs/fuse/connections
configfs configfs 0 0 0 - /sys/kernel/config
/dev/loop0 squashfs 56M 56M 0 100% /snap/core18/1988
/dev/loop1 squashfs 56M 56M 0 100% /snap/core18/2074
/dev/loop2 squashfs 219M 219M 0 100% /snap/gnome-3-34-1804/72
/dev/loop3 squashfs 66M 66M 0 100% /snap/gtk-common-themes/1515
/dev/loop4 squashfs 51M 51M 0 100% /snap/snap-store/547
/dev/loop6 squashfs 65M 65M 0 100% /snap/gtk-common-themes/1514
/dev/loop5 squashfs 219M 219M 0 100% /snap/gnome-3-34-1804/66
/dev/loop7 squashfs 32M 32M 0 100% /snap/snapd/11036
/dev/loop8 squashfs 33M 33M 0 100% /snap/snapd/12398
/dev/loop9 squashfs 52M 52M 0 100% /snap/snap-store/518
/dev/nvme0n1p1 vfat 246M 84M 163M 35% /boot/efi
tmpfs tmpfs 769M 20K 769M 1% /run/user/125
gvfsd-fuse - - - - - /run/user/125/gvfs
tmpfs tmpfs 769M 68K 769M 1% /run/user/1000
gvfsd-fuse fuse.gvfsd-fuse 0 0 0 - /run/user/1000/gvfs
/dev/fuse fuse 0 0 0 - /run/user/1000/doc
tmpfs tmpfs 769M 2.3M 767M 1% /run/snapd/ns
nsfs nsfs 0 0 0 - /run/snapd/ns/snap-store.mnt
那么，有什么方法可以增加我的主目录的存储空间吗？任何帮助都将不胜感激。
编辑 2：这是 sudo fdisk -l 的输出。我希望这有效。
Disk /dev/loop0: 55.48 MiB, 58159104 bytes, 113592 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop1: 55.45 MiB, 58134528 bytes, 113544 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop2: 219 MiB, 229638144 bytes, 448512 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop3: 65.1 MiB, 68259840 bytes, 133320 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop4: 50.98 MiB, 53432320 bytes, 104360 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop5: 218.102 MiB, 229629952 bytes, 448496 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop6: 64.79 MiB, 67915776 bytes, 132648 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop7: 31.9 MiB, 32595968 bytes, 63664 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/nvme0n1: 238.49 GiB, 256060514304 bytes, 500118192 sectors
Disk model: KBG40ZNS256G NVMe KIOXIA 256GB
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 8C2D4B07-EF83-462C-8910-D2DB2D83CD4C
Device Start End Sectors Size Type
/dev/nvme0n1p1 2048 514047 512000 250M EFI System
/dev/nvme0n1p2 514048 776191 262144 128M Microsoft reserved
/dev/nvme0n1p3 776192 462952447 462176256 220.4G Microsoft basic data
/dev/nvme0n1p4 462952448 464979967 2027520 990M Windows recovery environment
/dev/nvme0n1p5 464979968 497395711 32415744 15.5G Linux filesystem
/dev/nvme0n1p6 497395712 500117503 2721792 1.3G Windows recovery environment
Disk /dev/sda: 931.53 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: ST1000LM035-1RK1
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 3542D087-7CE6-4F88-90AE-5160120DF86A
Device Start End Sectors Size Type
/dev/sda1 2048 264191 262144 128M Microsoft reserved
/dev/sda2 264192 1030658047 1030393856 491.3G Microsoft basic data
/dev/sda3 1030658048 1953521663 922863616 440.1G Microsoft basic data
Disk /dev/loop8: 32.29 MiB, 33853440 bytes, 66120 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop9: 51.4 MiB, 53522432 bytes, 104536 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes