On 06/01/16 10:27, Bruno Martins wrote: > Hi everyone, > > I hope this is the best place to post this question. > > I was wondering how can one upgrade from CentOS 6.7 to CentOS 7.x using redhat-upgrade-tool-cli in a scenario where you're upgrading an Hyper-V based VM. > step1 would be to yum erase anything that didnt come from CentOS-6 itself, you clearly have external repos on there. And I mean not just remove the repos, but actually remove all the content that came from other places. Leave only content from base + updates for CentOS-6 itself. secondly you need to use the centos tools from the centos repos -- Karanbir Singh +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh GnuPG Key : http://www.karan.org/publickey.asc