从 16.04 升级到 18.04 后，Ubuntu 文件系统以只读模式挂载。我必须运行
mount -o remount,rw /dev/sda8/
每次我重新启动。
我也无法在已安装的驱动器中创建文件。
sanjeev@sanjeev-HP-Notebook:/media/sanjeev/Work$ touch hi
touch: cannot touch 'hi': No such file or directory
编辑：输出mount
sanjeev@sanjeev-HP-Notebook:~$ mount
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=3956552k,nr_inodes=989138,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=795872k,mode=755)
/dev/sda5 on / type ext4 (rw,relatime,errors=remount-ro,data=ordered)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
efivarfs on /sys/firmware/efi/efivars type efivarfs (rw,nosuid,nodev,noexec,relatime)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=27,pgrp=1,timeout=0,minproto=5,maxproto=5,direct)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime)
mqueue on /dev/mqueue type mqueue (rw,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
/var/lib/snapd/snaps/spotify_26.snap on /snap/spotify/26 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/core_6034.snap on /snap/core/6034 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/buka_2.snap on /snap/buka/2 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/heroku_3677.snap on /snap/heroku/3677 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/core_6130.snap on /snap/core/6130 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/heroku_3685.snap on /snap/heroku/3685 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/core_5897.snap on /snap/core/5897 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/heroku_3664.snap on /snap/heroku/3664 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/spotify_28.snap on /snap/spotify/28 type squashfs (ro,nodev,relatime,x-gdu.hide)
/dev/sda1 on /boot/efi type vfat (rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,relatime)
tmpfs on /run/user/125 type tmpfs (rw,nosuid,nodev,relatime,size=795868k,mode=700,uid=125,gid=133)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=795868k,mode=700,uid=1000,gid=1000)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)
文件etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sda8 during installation
UUID=c9dca042-347c-4490-897a-c87bd2a182e8 / ext4 errors=remount-ro 0 1
# /boot/efi was on /dev/sda1 during installation
UUID=3099-343C /boot/efi vfat umask=0077 0 1
# swap was on /dev/sda9 during installation
UUID=6076d618-eee6-4ee9-a7fa-e9b35457cad9 none swap sw 0 0