During command execution or system startup, an error message that the command or lib was not found is reported.
The bin, sbin, lib, and lib64 of CentOS 7, CentOS 8, and Ubuntu 20 are soft links as follows:
lrwxrwxrwx 1 root root 7 Jun 19 2018 bin -> usr/bin lrwxrwxrwx 1 root root 7 Jun 19 2018 lib -> usr/lib lrwxrwxrwx 1 root root 9 Jun 19 2018 lib64 -> usr/lib64 lrwxrwxrwx 1 root root 8 Jun 19 2018 sbin -> usr/sbin
If a soft link is deleted, an error will be reported during command execution or system startup.
Check and create the required soft links as instructed in Steps.
chroot. When running the
ls -al / | grep -E "lib|bin"
ln -s usr/lib64 lib64 ln -s usr/sbin sbin ln -s usr/bin bin ln -s usr/lib lib
chroot /mnt/vm1 /bin/bash
If no error is reported, the soft links have been successfully repaired.
5. Exit rescue mode and start the system.