Operating system not found!

Hello everyone,

As of this morning my OS doesn’t start up anymore.
No grub access.
Only black screen and a message:
Disk reading error
Operating system not found

I’m currently acting from live cd.
Seems that no os recovery is possible. I’m not able to see the existing filesystem trough the live cd.
I tried to download and masterize some recovery utilities, but mastering process stalls.
I also tried a fresh new dual boot installation, but installation process stalls.

Time ago I resolved on an Ubuntu system by launching this command from console:
sudo e2fsck -v /dev/sda1

But it seems not available on Opensuse (11.4).
Is there a similar command?
Do you have any other idea on how resolve that situation?

I accept any useful suggestion

Thanks

Download and run the hard disk diagnostic program from the manufacturer’s website. If it’s a Western Digital, check here: WD Support / Downloads / SATA & SAS
It looks like your hard disk is dead (not a filesystem problem).

Also check in BIOS setup if it’s still there and if it is in the list of boot devices.

On 2011-12-06 22:56, opensuserxxx wrote:
>
> Hello everyone,
>
> As of this morning my OS doesn’t start up anymore.
> No grub access.
> Only black screen and a message:
> DISK READING ERROR
> OPERATING SYSTEM NOT FOUND

It looks to me like a msdos error message, or a generic MBR code trying to
boot the wrong partition.

> I’m currently acting from live cd.
> Seems that no os recovery is possible. I’m not able to see the existing
> filesystem trough the live cd.

What CLI commands did you try to verify that?

> I tried to download and masterize some recovery utilities, but
> mastering process stalls.
> I also tried a fresh new dual boot installation, but installation
> process stalls.

What for?

> Time ago I resolved on an Ubuntu system by launching this command from
> console:
> SUDO E2FSCK -V /DEV/SDA1
>
> But it seems not available on Opensuse (11.4).
> Is there a similar command?

Of course it is available in openSUSE.


Cheers / Saludos,

Carlos E. R.
(from 11.4 x86_64 “Celadon” at Telcontar)

linux:/home/linux # e2fsck /dev/sda1
e2fsck 1.41.14 (22-Dec-2010)
e2fsck: Superblock invalid, trying backup blocks…
e2fsck: Bad magic number in super-block while trying to open /dev/sda1

The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>

What does it mean?

It means that either the filesystem on this parition is damaged or that it is not a linux ext2/ext3/ext4 partition. It could also mean (but not necessarily) that the hard disk is physically damaged, in which case it would get logically damaged as well. If you can boot a live CD, post the output of

sudo /sbin/fdisk -l 

It will tell you (and us) if we’re dealing with a linux partition or not.

On 2011-12-07 13:36, opensuserxxx wrote:
>
> linux:/home/linux # e2fsck /dev/sda1

> What does it mean?

What it says. That sda1 is not an ext2/3/4 filesystem or that it is broken.

Are you sure it is sda1? Not 2, 3, 4,…130? I can not know, that’s for you
to say. It is your computer.


Cheers / Saludos,

Carlos E. R.
(from 11.4 x86_64 “Celadon” at Telcontar)

linux@linux:~> sudo /sbin/fdisk -l

Disk /dev/sda: 120.0 GB, 120034123776 bytes
255 heads, 63 sectors/track, 14593 cylinders, total 234441648 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000dee66

Device Boot Start End Blocks Id System
/dev/sda1 2048 2666495 1332224 82 Linux swap / Solaris
/dev/sda2 * 2666496 234440703 115887104 83 Linux
linux@linux:~>

On 2011-12-07 18:46, opensuserxxx wrote:
>
> linux@linux:~> sudo /sbin/fdisk -l

See? It is sda2, not 1.


Cheers / Saludos,

Carlos E. R.
(from 11.4 x86_64 “Celadon” at Telcontar)

linux:/home/linux # e2fsck /dev/sda2
e2fsck 1.41.14 (22-Dec-2010)
e2fsck: No such file or directory while trying to open /dev/sda2
Possibly non-existent device?

On 2011-12-08 13:46, opensuserxxx wrote:
>
> linux:/home/linux # e2fsck /dev/sda2
> e2fsck 1.41.14 (22-Dec-2010)
> e2fsck: No such file or directory while trying to open /dev/sda2
> Possibly non-existent device?

Is fdisk still listing it?


Cheers / Saludos,

Carlos E. R.
(from 11.4 x86_64 “Celadon” at Telcontar)