Hi, It would be nice to include the app-admin/mbr package on the installation CDs. This tool is extremely helpful when trying to install gentoo on a fresh HDD or fix a broken system. Best regards, Maciej Grela Reproducible: Always
The installcd is not a rescue CD and it's not required for install. Sorry.
I can recommend the System Rescue CD, which is a Gentoo-based LiveCD geared towards such purposes. And it includes app-admin/mbr. http://www.sysresccd.org/Detailed-packages-list