From Bugzilla Helper: User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322) Description of problem: I had Fedora Core 1 installed and wanted to have FC2 installed at the same time, at a separate partition. I could choose between installing FC2 or upgrading the installed (and detected) FC1. I chose new installation. When I was to configure grub, I got options whether to modify the existing grub, no change, and to do a new grub install. I've tried both modification and new grub, both result in a single line grub menu with only Fedora Core 2 as an option. In other words, FC2 won't dual boot with FC1. Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. Install FC1 2. Install FC2 - choose new installation 3. Reboot Actual Results: I was not able to boot FC1 anymore, only FC2. Had to use rescue CD to recover data. Expected Results: I should have been able to choose between FC1 and FC2 at boot time. Additional info: Had to use the rescue CD and manually configure grub. Why isn't there a tool to "recover lost Linux-installations boot option" in grub?
This isn't really a supported configuration. You can do it by chainloading a second boot partition, but it's not something that can really be sanely supported (in addition to being a fairly niche use case)