我剛剛在一台新電腦上全新安裝了 Ubuntu，而我的外部 HDD（在 ext 情況下是內部的）是唯讀的，我似乎無法更改它。
然而，有些程式（例如 youtube-dl）仍然可以寫入它，我可以建立資料夾，甚至可以從中編輯、重新命名和刪除文件，但我無法向其中傳輸任何文件。
cp 似乎可以在終端機中使用，但是當我嘗試將檔案複製/貼上到磁碟機中時，「貼上」顯示為灰色。
在 Windows 10 上我可以正常寫入，沒有任何問題。 （我有雙啟動）
Windows 10 啟動速度很快，所以事實並非如此，我嘗試在 Ubuntu 和 Windows 中的每個檔案系統（NTFS、exFAT，甚至 FAT32）中格式化磁碟機。格式化在兩者中都有效，但驅動器在 Ubuntu 中仍然是唯讀的，因此似乎也不是這樣。
有人可以幫忙嗎？
預先非常感謝您。
編輯：嘗試了一些其他 USB 驅動器，結果發現所有 USB 驅動器都存在相同的問題，因此這不是該特定驅動器的問題，而是一般 USB 驅動器的問題。
ls -la /media/piggy/External 返回：
total 224
drwxrwxrwx 1 piggy piggy 4096 Dec 14 13:40 .
drwxr-x---+ 3 root root 4096 Dec 14 13:31 ..
-rwxrwxrwx 1 piggy piggy 218543 Dec 14 13:40 GGedited.txt
快照清單返回：
Name Version Rev Tracking Publisher Notes
bare 1.0 5 latest/stable canonical✓ base
core18 20211028 2253 latest/stable canonical✓ base
core20 20211129 1270 latest/stable canonical✓ base
gnome-3-34-1804 0+git.3556cb3 77 latest/stable/… canonical✓ -
gnome-3-38-2004 0+git.cd626d1 87 latest/stable canonical✓ -
gtk-common-themes 0.1-59-g7bca6ae 1519 latest/stable/… canonical✓ -
snap-store 3.38.0-66-gbd5b8f7 558 latest/stable/… canonical✓ -
snapd 2.53.4 14295 latest/stable canonical✓ snapd
mount 返回這面文字牆（ext 驅動器是 /dev/sdc1）：
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,noexec,relatime,size=3991924k,nr_inodes=997981,mode=755,inode64)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,nodev,noexec,relatime,size=804932k,mode=755,inode64)
/dev/sdb5 on / type ext4 (rw,relatime,errors=remount-ro)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,inode64)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k,inode64)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755,inode64)
cgroup2 on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
none on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
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/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/rdma type cgroup (rw,nosuid,nodev,noexec,relatime,rdma)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
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/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=28,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=16871)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
tracefs on /sys/kernel/tracing type tracefs (rw,nosuid,nodev,noexec,relatime)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)
configfs on /sys/kernel/config type configfs (rw,nosuid,nodev,noexec,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,nosuid,nodev,noexec,relatime)
/var/lib/snapd/snaps/core18_2128.snap on /snap/core18/2128 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-3-34-1804_72.snap on /snap/gnome-3-34-1804/72 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-3-34-1804_77.snap on /snap/gnome-3-34-1804/77 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/core20_1270.snap on /snap/core20/1270 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/core18_2253.snap on /snap/core18/2253 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/bare_5.snap on /snap/bare/5 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gtk-common-themes_1519.snap on /snap/gtk-common-themes/1519 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-3-38-2004_87.snap on /snap/gnome-3-38-2004/87 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/snap-store_547.snap on /snap/snap-store/547 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/snap-store_558.snap on /snap/snap-store/558 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/snapd_14295.snap on /snap/snapd/14295 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/snapd_12704.snap on /snap/snapd/12704 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gtk-common-themes_1515.snap on /snap/gtk-common-themes/1515 type squashfs (ro,nodev,relatime,x-gdu.hide)
/dev/sdb2 on /boot/efi type vfat (rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=804932k,mode=700,uid=1000,gid=1000,inode64)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)
/dev/fuse on /run/user/1000/doc type fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)
tmpfs on /run/snapd/ns type tmpfs (rw,nosuid,nodev,noexec,relatime,size=804932k,mode=755,inode64)
nsfs on /run/snapd/ns/snap-store.mnt type nsfs (rw)
/dev/sdc1 on /media/piggy/External type fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096,uhelper=udisks2)