我正在尝试在虚拟机中安装 Ubuntu 20.04。如果我跳过此步骤，安装就会崩溃，因此出现错误。
The installer encountered an error copying files to the hard disk:
[Errno 5] Input/output error
This is often due to a faulty CD/DVD disk or drive, or a faulty hard disk.
It may help to clean the CD/DVD, to burn the CD/DVD at a lower speed,
to clean the CD/DVD drive lens (cleaning kits are often available from
electronics suppliers), to check whether the hard disk is old and in
need of replacement, or to move the system to a cooler environment.
我尝试重新安装，也检查了 RAM。一切正常。我将 RAM 增加到 4GB，并将存储空间增加到 25GB。我还尝试安装 Ubuntu 18.04，但遇到了同样的问题。