Hi! I know that there is another thread with similar subject but as i tried everything i will reiterate the problem with grub2-mkconfig not seeing the windows 8.1 even after adding custom entry. So, this are my information: [root@localhost grub.d]# parted -l Model: ATA Corsair Force 3 (scsi) Disk /dev/sda: 90.0GB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: pmbr_boot Number Start End Size File system Name Flags 8 1049kB 3146kB 2097kB bios_grub 1 5243kB 420MB 415MB ntfs Basic data partition hidden, diag 2 420MB 693MB 273MB fat32 EFI system partition boot, esp 3 693MB 945MB 252MB Microsoft reserved partition msftres 4 945MB 38.2GB 37.3GB ntfs Basic data partition msftdata 5 38.2GB 61.3GB 23.1GB ntfs Basic data partition msftdata 6 61.3GB 78.5GB 17.2GB ext4 7 78.5GB 90.0GB 11.5GB ext4 [root@localhost grub.d]# mount | grep ^/dev/ /dev/sda6 on / type ext4 (rw,relatime,seclabel,data=ordered) /dev/sda2 on /boot/efi type vfat (rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=winnt,errors=remount-ro) /dev/sda7 on /home type ext4 (rw,relatime,seclabel) /dev/sda4 on /mnt/WIN_C type fuseblk (rw,noatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096) /dev/sda5 on /mnt/WIN_D type fuseblk (rw,noatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096) [root@localhost grub.d]# cat 40_custom #!/bin/sh exec tail -n +3 $0 # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above. menuentry 'Microsoft Windows 8.1' { set root='hd0,gpt4' chainloader /EFI/Microsoft/Boot/bootmgfw.efi boot } i must say that with both gpt2 and gpt4 (esp partition and C:\ partition) does not work.. [root@localhost grub.d]# ll /etc/grub*.cfg lrwxrwxrwx. 1 root root 29 May 30 10:07 /etc/grub2.cfg -> /boot/efi/EFI/fedora/grub.cfg lrwxrwxrwx. 1 root root 29 May 30 10:04 /etc/grub2-efi.cfg -> /boot/efi/EFI/fedora/grub.cfg So, what i am missing? and why? (wasn't fedora tested for efi dual boot situations? i would think that is preaty obvious that a HUGE percentage of usage will be on modern efi/gpt windows 8.1 laptops and desktops) Did anyone have a working dual boot EFI installation of Windows 8.1 + fedora 22? Thank you! Adrian
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