首先我尝试了 Gparted，但当我尝试终端命令时无法卸载它sudo umount /dev/sda2
我收到这条消息：
umount: /: 目标正忙
。
lsblk -f /dev/sda 给出：
名称 FSTYPE 标签 UUID FSAVAIL FSUSE% MOUNTPOINT sda
├─sda1 │ vfat 5AF1-7D88
└─sda2 ext4 fc57d466-2433-4afc-88b8-6198c1fe1ce7 681.2G 20% /
然后我尝试sudo lsof /dev/sda2得到很多东西，其中一部分是：
x86_64-linux-gnu/libselinux.so.1
sudo 17241 root mem REG 8,2 133200 32250945 /usr/lib/x86_64-linux-gnu/libaudit.so.1.0.0
sudo 17241 root mem REG 8,2 14624 32900921 /usr/lib/x86_64-linux-gnu/security/pam_umask.so
sudo 17241 root mem REG 8,2 18424 32901158 /usr/lib/x86_64-linux-gnu/security/pam_cap.so
sudo 17241 root mem REG 8,2 14448 32900895 /usr/lib/x86_64-linux-gnu/security/pam_permit.so
sudo 17241 root mem REG 8,2 14048 32900265 /usr/lib/x86_64-linux-gnu/security/pam_deny.so
sudo 17241 root mem REG 8,2 18720 32900267 /usr/lib/x86_64-linux-gnu/security/pam_env.so
sudo 17241 root mem REG 8,2 191504 32247723 /usr/lib/x86_64-linux-gnu/ld-2.31.so
lsof 17242 root cwd DIR 8,2 4096 37224450 /home/nada
lsof 17242 root rtd DIR 8,2 4096 2 /
lsof 17242 root txt REG 8,2 175744 32244418 /usr/bin/lsof
lsof 17242 root mem REG 8,2 5699248 32250545 /usr/lib/locale/locale-archive
lsof 17242 root mem REG 8,2 157224 32250050 /usr/lib/x86_64-linux-gnu/libpthread-2.31.so
lsof 17242 root mem REG 8,2 18848 32250026 /usr/lib/x86_64-linux-gnu/libdl-2.31.so
lsof 17242 root mem REG 8,2 588488 32248600 /usr/lib/x86_64-linux-gnu/libpcre2-8.so.0.9.0
lsof 17242 root mem REG 8,2 2029592 32247727 /usr/lib/x86_64-linux-gnu/libc-2.31.so
lsof 17242 root mem REG 8,2 163200 32252035 /usr/lib/x86_64-linux-gnu/libselinux.so.1
lsof 17242 root mem REG 8,2 27002 32904460 /usr/lib/x86_64-linux-gnu/gconv/gconv-modules.cache
lsof 17242 root mem REG 8,2 191504 32247723 /usr/lib/x86_64-linux-gnu/ld-2.31.so
lsof 17243 root cwd DIR 8,2 4096 37224450 /home/nada
lsof 17243 root rtd DIR 8,2 4096 2 /
lsof 17243 root txt REG 8,2 175744 32244418 /usr/bin/lsof
lsof 17243 root mem REG 8,2 5699248 32250545 /usr/lib/locale/locale-archive
lsof 17243 root mem REG 8,2 157224 32250050 /usr/lib/x86_64-linux-gnu/libpthread-2.31.so
lsof 17243 root mem REG 8,2 18848 32250026 /usr/lib/x86_64-linux-gnu/libdl-2.31.so
lsof 17243 root mem REG 8,2 588488 32248600 /usr/lib/x86_64-linux-gnu/libpcre2-8.so.0.9.0
lsof 17243 root mem REG 8,2 2029592 32247727 /usr/lib/x86_64-linux-gnu/libc-2.31.so
lsof 17243 root mem REG 8,2 163200 32252035 /usr/lib/x86_64-linux-gnu/libselinux.so.1
lsof 17243 root mem REG 8,2 191504 32247723 /usr/lib/x86_64-linux-gnu/ld-2.31.so