On 06/01/16 13:08, Leon Fauster wrote: > Am 06.01.2016 um 14:03 schrieb Karanbir Singh <mail-lists at karan.org>: >> 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 > > > > IMHO, I would put this effort (the above, and post activities like verify > everything e.g. sanity-checks etc.) into a new setup + service migration. > A more clean procedure and better reproducible ... > yeah, I cant agree more. The only time the migration process worked for me was on a freshly installed centos6 box, with a minimal install and then upgraded immediately. Admittedly, the only time I ran this was about 6 to 8 months back. When third party repos get involved, all bets are all. Similarly when desktop components and lots of user data is involved, many bets are also off. regards -- Karanbir Singh +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh GnuPG Key : http://www.karan.org/publickey.asc