TARGET                                        SOURCE     FSTYPE     OPTIONS
/                                             /dev/sdb2  ext4       rw,noatime,nodiratime,errors=remount-ro,data=ordered
├─/sys                                        sysfs      sysfs      rw,nosuid,nodev,noexec,relatime
│ ├─/sys/kernel/security                      securityfs securityfs rw,nosuid,nodev,noexec,relatime
│ ├─/sys/fs/cgroup                            tmpfs      tmpfs      ro,nosuid,nodev,noexec,mode=755
│ │ ├─/sys/fs/cgroup/systemd                  cgroup     cgroup     rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd
│ │ ├─/sys/fs/cgroup/memory                   cgroup     cgroup     rw,nosuid,nodev,noexec,relatime,memory
│ │ ├─/sys/fs/cgroup/freezer                  cgroup     cgroup     rw,nosuid,nodev,noexec,relatime,freezer
│ │ ├─/sys/fs/cgroup/perf_event               cgroup     cgroup     rw,nosuid,nodev,noexec,relatime,perf_event
│ │ ├─/sys/fs/cgroup/net_cls,net_prio         cgroup     cgroup     rw,nosuid,nodev,noexec,relatime,net_cls,net_prio
│ │ ├─/sys/fs/cgroup/blkio                    cgroup     cgroup     rw,nosuid,nodev,noexec,relatime,blkio
│ │ ├─/sys/fs/cgroup/cpu,cpuacct              cgroup     cgroup     rw,nosuid,nodev,noexec,relatime,cpu,cpuacct
│ │ ├─/sys/fs/cgroup/cpuset                   cgroup     cgroup     rw,nosuid,nodev,noexec,relatime,cpuset
│ │ ├─/sys/fs/cgroup/devices                  cgroup     cgroup     rw,nosuid,nodev,noexec,relatime,devices
│ │ └─/sys/fs/cgroup/pids                     cgroup     cgroup     rw,nosuid,nodev,noexec,relatime,pids
│ ├─/sys/fs/pstore                            pstore     pstore     rw,nosuid,nodev,noexec,relatime
│ └─/sys/kernel/debug                         debugfs    debugfs    rw,relatime
├─/proc                                       proc       proc       rw,nosuid,nodev,noexec,relatime
│ └─/proc/sys/fs/binfmt_misc                  systemd-1  autofs     rw,relatime,fd=36,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=10642
├─/dev                                        udev       devtmpfs   rw,nosuid,relatime,size=1729796k,nr_inodes=432449,mode=755
│ ├─/dev/pts                                  devpts     devpts     rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000
│ ├─/dev/shm                                  tmpfs      tmpfs      rw,nosuid,nodev
│ ├─/dev/hugepages                            hugetlbfs  hugetlbfs  rw,relatime
│ └─/dev/mqueue                               mqueue     mqueue     rw,relatime
├─/run                                        tmpfs      tmpfs      rw,nosuid,noexec,relatime,size=348320k,mode=755
│ └─/run/lock                                 tmpfs      tmpfs      rw,nosuid,nodev,noexec,relatime,size=5120k
├─/mnt/748c5e07-21d9-45c1-9070-02f233436528   systemd-1  autofs     rw,relatime,fd=33,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=10635
│ └─/mnt/748c5e07-21d9-45c1-9070-02f233436528 /dev/sda1  ext4       rw,noatime,data=ordered
├─/var/log                                    tmpfs      tmpfs      rw,nosuid,nodev,noatime,size=20480k
├─/tmp                                        tmpfs      tmpfs      rw,nosuid,nodev,noatime
├─/DietPi                                     tmpfs      tmpfs      rw,nosuid,nodev,noatime,size=10240k
└─/boot                                       /dev/sdb1  ext4       rw,noatime,nodiratime,data=ordered
root@DietPi:~#





root@DietPi:~# df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            1.7G     0  1.7G   0% /dev
tmpfs           341M  7.7M  333M   3% /run
/dev/sdb2       3.5G  943M  2.6G  27% /
tmpfs           1.7G     0  1.7G   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           1.7G     0  1.7G   0% /sys/fs/cgroup
/dev/sda1       917G  893G     0 100% /mnt/748c5e07-21d9-45c1-9070-02f233436528
tmpfs            20M  344K   20M   2% /var/log
tmpfs           1.7G     0  1.7G   0% /tmp
tmpfs            10M  1.5M  8.6M  15% /DietPi
/dev/sdb1       114M   38M   74M  34% /boot