Dostałam odpowiedź od Red Hata i stąd moje pytanie wnioskując po tym co napisali to: najpierw się aktywuje subskrypcje po czym się wchodzi do nich na stronę i ściąga się taką wersję jak się chce w tym przypadku 5 czy tak może być w rzeczywistości? napisali coś takiego:
Thank you for contacting Red Hat customer service.
I inform you that, as long as at least one subscription is active in the account, customer will have full access to all the supported versions of our RHEL software.
Once the subscription has been activated, the customer should log in on redhat.com with his username and password, then click on the following link:
https://rhn.redhat.com/rhn/software/downloads/SupportedISOs.do
This page will display all the supported versions of the software, from version 4 to version 6, plus all the available releases for each version; just click on the name of the software choosing the right architecture of the machine and then burn the ISOs on CD or DVD; immediately after will be possible to install the SW on the machine.
Please do not hesitate to contact us back for any further information needed,