By now you should have allocated some free space on your disk. If you have not done so yet, please do it now unless there is an existing partition you are willing to convert to MINIX 3.
Boot from the CD-ROM
Insert the CD-ROM into your CD-ROM drive and boot the computer from it. If you have 16 MB of RAM or more, choose "Regular;" if you have only 8 MB choose "small." If the computer boots from the hard disk instead of the CD-ROM, boot again and enter the BIOS setup program to change the order of boot devices, putting the CD-ROM before the hard disk.
Login as root
When the login prompt appears, login as root. After a successful login as root, you will see the shell prompt (#). At this point you are running fully-operational MINIX 3. If you type:
ls /usr/bin | more
you can see what software is available. Hit space to scroll the list. To see what program foo does, type:
man foo
The manual pages are also available at www.minix3.org/manpages.
Start the setup script
To start the installation of MINIX 3 on the hard disk, type
setup
After this and all other commands, be sure to type ENTER (RETURN). When the installation script ends a screen with a colon, hit ENTER to continue. If the screen suddenly goes blank, press CTRL-F3 to select software scrolling (should only be needed on very old computers). Note that CTRL-key means depress the CTRL key and while holding it down, press "key."