Install CentOS dual boot with Win 8

When you finish install CentOS. You grub menu will have list only CentOS. You can fix that by add this entry to /etc/grub2.cfg

menuentry 'Windows 8 (loader)' {
        insmod part_msdos
        insmod ntfs
        set root='hd0,msdos1'
        ntldr /bootmgr
}

https://www.centos.org/forums/viewtopic.php?f=47&t=47476