Follow the steps to install:
Select the virtual machine, and then select Edit virtual machine settings as shown below.
In the edit box that pops up, select "Use ISO image Files" in "CD/DVD" and select "Browse" to open the ISO image of Ms-dos7.10.iso. If you do not have to download online. And then "OK".
When the virtual machine is selected, select "Open this virtual machine" in the interface.
When the following screen appears, click the virtual machine interface, and when the mouse disappears, the instructions can be lost to the virtual machine. Press the "Enter" key.
Next encounter "Next" and select "Next". Select "Continue" when encountering "Continue". In short, the word is affirmative.
Next select "Create a FAT32/16/12 Primary Partition" To create a basic partition for the virtual machine disk.
Then select "Reboot Now". Next, to modify the BIOS settings, boot from the CD by default.
Then press "F2" to enter the BIOS setup before the following figure appears.
If you succeed, you will enter the BIOS setup interface. Press the "→" key, select the boot, press the DOWN arrow to select the CD-ROM Drive.
Then hold down the SHIFT key and press the + key to move it to the top.
Then press F10, Save and exit, and click "Enter" when the following image appears.
In the face of the following figure, that is, the installation of "Add-on" is the choice of affirmative words. I do not install add-on here, so I chose "Cancel".
The next step is sure. Until "Reboot", the same way to modify the BIOS, the hard drive to the top, save exit.
At this point you will find that you can enter the ms-dos7.10 system normally.
The above is the entire content of this article, I hope to help you learn, but also hope that we support the cloud habitat community.