grub---problem

[Ralf Mardorf]

On Wed, 2 Dec 2015 05:10:23 +0530, Ramachandran Chidambaraiyer wrote:
>On Tuesday, December 1, 2015, Ralf Mardorf wrote:
>>    >mount /dev/sda1 /mnt  
>
>mount:  special device /dev/sda1 does not exist

This does mean that no device sda is available, you can check it by
running
  ls /dev/sd*
 
>>    >fdisk -l /dev/sda; parted -l; ls -l /mnt  
>
>> Model:  ATA WDC  WD3200BPVT-0 (scsi)  
>
>Disk /dev/sdb: 320GB
>Sector size (logical/physical): 512B/512B
>Partition Table: msdos
>
>Number  Start          End           Size         Type          File
>system
> Flgs
>  1            1049kb      85.8GB    85.8GB    primary     ext4
>  boot
>  2            85.8GB      320GB     234GB     extended
>  7           85.8GB       107GB     21.5GB   logical        ext4
> 8            107GB        163GB     55.8GB   logical
> 6            163GB        319GB     156GB   logical          ext4
> 5            319GB        320GB     927MB  logical       linux-swap
> (v1)

You do not get
  fdisk: cannot open /dev/sda: No such file or directory
and at the same time the output of parted -l shows sdb only and not sda?
That's just a rhetorical question. Please, next time post everything.

I don't know, why there is no device sda, why the first device is sdb.

What is the output of

 sudo mount /dev/sdb /mnt && ls -l /mnt && cat /mnt/etc/issue

Regards,
Ralf