Since CentOS 5.5 has reached its , it is no longer available on standard CentOS mirror lists. To download the ISO, you must access the CentOS Vault or verified third-party archives:
Because the standard mirrors no longer host these files, you must retrieve the ISO images from the CentOS Vault . centos 5.5 iso download
| Image Type | Filename | Size (approx) | |------------|----------|---------------| | DVD 1 of 2 | CentOS-5.5-x86_64-bin-DVD-1of2.iso | 4.1 GB | | DVD 2 of 2 | CentOS-5.5-x86_64-bin-DVD-2of2.iso | 1.2 GB | | CD 1 | CentOS-5.5-x86_64-bin-1of8.iso | 700 MB | | Minimal | CentOS-5.5-x86_64-minimal.iso | ~350 MB | Since CentOS 5