Operating system not found

[Gkri]

I have linux mint, mate edition, recently upgraded to 17, among with windows 7, and I work only on mint for a couple years now.

Yesterday I forced shutdown my laptop because I was in a hurry, and today I found out that I cannot boot at any system, getting an error "Operating system not found".
On the boot menu there is nothing next to the HDD part, although I placed it on top of the list and tried again to boot the system.
Restarted a couple times, nothing changed.
Tried some tips found on youtube, but I'm sure there's nothing wrong with my hardware [I think the problem clearly showed up because of the force shutdown...].

Booted from liveCD, and on GParted I get the error "Libparted Bug Found! Invalid partition table - recursive partition on /dev/sr0.". When I click on 'ignore' I get this:

https://dl-web.dropbox.com/get/Screensh ... bwg15icapg

In terminal, I get these:

Code: Select all

mint@mint ~ $ sudo mkdir /mnt/sda1
mint@mint ~ $ sudo mount /dev/sda1 /mnt/sda1
mount: special device /dev/sda1 does not exist
mint@mint ~ $ sudo update-grub
/usr/sbin/grub-probe: error: failed to get canonical path of `/cow'.

Also, on the Disks menu I get this:

https://dl-web.dropbox.com/get/Screensh ... -CypMrYlCw

Can anyone help me?

Thank you!

[karlchen]

https://dl-web.dropbox.com/get/Screensh ... bwg15icapg

This link leads me to this error message

Code: Select all

Error (403)
It seems you don't belong here! You should probably sign in. Check out our Help Center and forums for help, or head back to home. 

Suggests to me I am not welcome to view the screenshot.

https://dl-web.dropbox.com/get/Screensh ... -CypMrYlCw

gives the same error message, no screenshot.

[Gkri]

https://dl-web.dropbox.com/get/Screensh ... bwg15icapg

This link leads me to this error message

Code: Select all

Error (403)
It seems you don't belong here! You should probably sign in. Check out our Help Center and forums for help, or head back to home. 

Suggests to me I am not welcome to view the screenshot.

https://dl-web.dropbox.com/get/Screensh ... -CypMrYlCw

gives the same error message, no screenshot.

Indeed, since I took the screenshots from the liveCD session it's only natural that dropbox couldn't keep them for more than the time the session lasted.
Well the screenshots showed that the disk was not recognised by neither gparted nor the disks utility.

In the end I just got a new disk from a friend, put it on the laptop and fresh installed everything.
Thank you for your willingness to help though!