grub---problem

[Ralf Mardorf]

>> please run
>>
>>   > sudo -i
>>
>> >then run and post the output of
>>
>>   > fdisk -l /dev/sda; parted -l; ls -l /mnt
>
>
>Warning: Unable to open /dev/sr0 read-write (Read-only file system).
> /dev/sr0
>has been opened read-only.
>Error : Invalid partition table  - recursive partition on  /dev/sr0.
>Ignore/Cancel?

please run

  sudo -i  

and run

  mount /dev/sda1 /mnt

before you continue with:

then run and post the output of
  
  fdisk -l /dev/sda; parted -l; ls -l /mnt

;)