Q. While installing Red Hat Enterprise Linux it asks Installation Number. Where do I get red hat enterprise Linux installation number?
A. Red hat Enterprise Linux is a commercial subscription based product. During installation you need to supply a 16-character long string or serial number. Without this number you will not able to install:
=> Security patch
=> Additional applications
=> Support etc
If you are looking for free Linux version, try any one of the following for Server Installation:
=> Debian Linux