Got a MBR disk and GRUB2 core.img will not fit between the MBR and sector 63? This is common with on disks on which Windows XP was installed prior to trying to install Fedora 16. Typically you will receive a message similar to this: Your embedding area is unusually small. core.img won’t fit in it.. Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged.. Here is what the Fedora deveopers have to say about this issue: Versions of Fedora prior to Fedora 16, and many