Well,

I think that I've found the solution: the problem was that iso fiile was in
the very root partition, because of that, Liveinst refused to unmount it.
I've verified moving iso file to another partition and this error went away.

HTH

2015-11-21 15:53 GMT-03:00 Sergio Belkin <seb...@gmail.com>:

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



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