oops - didnt read s390 part - my mistake. Well I have never used a s390 so not sure bout the boot loader, but I guess the rest of the procedure ( modified accordingly for the boot loader ) should work fine. On Tuesday 21 November 2006 06:55, Karanbir Singh wrote: > Sujit Nair wrote: > > Hi, > > > > you can do the following - shud work fine without any issues: > > > > yum update yum ( get the latest version of yum ) > > > > yum update centos-release ( To update to latest release ) > > > > rpm --rebuilddb -vv ( not required - just for the heck ) > > > > yum update > > > > That should upgrade all the packages ( if you see any error - u will have > > to do a bit of trouble shooting ) > > > > After update check kernel: > > yum list kernel > > > > Update grub and reboot into new kernel. I upgraded from 4.1 to 4.4 on 2 > > servers and it went fine. > > you use grub on s390 ?