On 8/16/2015 2:18 PM, Sachin Gupta wrote: > We have centos6 server. And we are planning to upgrade it to Centos7.And > GRUB 2 needs a new bios grub partition. Creating a new partition is too > much risky. I am wondering if it is possible to replace Grub2 with Grub > legacy on Centos7 machine? I would build the CentOS 7 machine on new hardware, bring it up in parallel, then cut your applications over to it, and redeploy the old hardware as something else. -- john r pierce, recycling bits in santa cruz