Hi,

I have the following options in "/etc/grub.d/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 'Live Fedora 23' --class fedora {
  set isofile=/boot/Fedora-Live-KDE-x86_64-23-10.iso
  loopback loop (hd1,gpt3)$isofile
  linuxefi (loop)/isolinux/vmlinuz0 iso-scan/filename=${isofile} root=live:CDLABEL=Fedora-Live-KDE-x86_64-23-10 rootfstype=auto ro rd.live.image quiet  rhgb rd.luks=0 rd.md=0 rd.dm=0
  initrdefi (loop)/isolinux/initrd0.img
}

It boots fine, but I cannot install it says:

"blivet.errors.DeviceError: ('cannot replace active format', 'sdb3')   "

/dev/sdb3 es my current rootfs....

I've reported the bug https://bugzilla.redhat.com/show_bug.cgi?id=1284187

In the mean time, please could you tell me that if a grub2 misconfiguration in 40_custom file?

Thanks in advance!

                                                                                                       

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Sergio Belkin
LPIC-2 Certified - http://www.lpi.org