I accidentally plugged out the external HDD while the virtual machine is still running, when I plugged it in again the system show message as follow:
Generating "run/initramfs/rdsosreport.txt"
Entering emergency mode. Exit the shell to continue.
Type "journalctl" to view to view system logs.
You might want to save "run/initramfs/rdsosreport.txt" to a USB stick or /boot
after mounting them and attach it to a bug report.
:/#
I installed Red Hat Enterprise Linux 8 64-bit on VMware Workstation 15 on an external hard disk(because there is not enough disk space on the local hard disk)