F7: SELinux feature or bug?

[Jeroen Lankheet]

Hi all,

I think I've been stupid or framed or both. I wanted to samba share a 
USB disk on a F7 system but got an SELinux message saying that the 
directory could not be shared, and that there was a command to get it 
right (=wrong?).
So I typed in

chcon -t samba_share_t -R /

Yes, that's what was in the SElinux message thingie as suggestion. And 
being a total SELinux nitwit I did what the almighty Linux system adviced.
So it took a while before getting "operation not permitted" on /dev/....
Then I cancelled the operation but the damage has apparently already 
been made.
I retyped the command with the proper directory to share and now the 
share worked.
But when I restarted the system all kinds of services were broken 
including /dev/eth0.
The kernel could not find the eth0 device. The X configuration was gone 
and all kinds of errors were smashed into my face.
So it looks like the SELinux (or me myself?) has scrambled my harddisk. 
I cannot even login anymore. The system is completely dead.
Some 'simple' questions:
Why did this go wrong?
What actually did go wrong?
What to do next? Re-install? That would be a bummer.

Thanks for the help.

Regards,
Jeroen.