Upgrade from FC13 to FC14: Uncorrectly unmounted partition /dev/sde

[Fab35]

Hello all

I upgraded my system (or try to upgrade) from FC13 to FC14 with PreUpgrade.
Once I reboot, I select 'Mise à niveau' (Upgrade) in GRUB menu.

I can see that Anaconda has run and the graphical installation is launched.
When detecting the hardware (1st step), installation fails because it thinks that my file system is incorrectly unmounted and displaying the partitiion name /dev/sde
it asked me to reboot the system and let it check the file system. But nothing better after that

The problem is that I have no media on this device (it mays be my multiple card reader but no card inserted).and no USB device at all.

I only have 2 HDD (/dev/sda1 for my primary with Linux partition and a second one /dev/sda2 for my NTFS backup partition).

I checked in /dev/ root:
[root@XXXX /dev]# ls sde*
sde

And of course, mount command shows nothing about this device.

So I do not understand what is wrong :-(
Please, someone could help me where to look for ?

Thanks
Fab