Dual Boot 2 Ubuntu Missing /boot

[fonsi2099]

dual boot 13.04 + 12.04 How can login in my first OS 13.04

I have deleted my /boot partition of 13.04 and I have rewritten it accidentally with/boot partition of 12.04 by re- installing 12.04, now I have two OS 13.04 and 2nd OS 12.04 but I have not dual-boot in grub menu I see only 12.04 not choice for 13.04. how can I log in my partition of 13.04?
"
lts-Aspire-S3:~$ sudo update-grub
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-3.5.0-30-generic
Found initrd image: /boot/initrd.img-3.5.0-30-generic
Found linux image: /boot/vmlinuz-3.5.0-23-generic
Found initrd image: /boot/initrd.img-3.5.0-23-generic
Found memtest86+ image: /memtest86+.bin
ERROR: sil: invalid metadata checksum in area 3 on /dev/sda
ERROR: sil: invalid metadata checksum in area 3 on /dev/sda
ERROR: sil: invalid metadata checksum in area 3 on /dev/sda
ERROR: sil: invalid metadata checksum in area 3 on /dev/sda
ERROR: sil: invalid metadata checksum in area 3 on /dev/sda
ERROR: sil: invalid metadata checksum in area 3 on /dev/sda
ERROR: sil: invalid metadata checksum in area 3 on /dev/sda
ERROR: sil: invalid metadata checksum in area 3 on /dev/sda
ERROR: sil: invalid metadata checksum in area 3 on /dev/sda
ERROR: sil: invalid metadata checksum in area 3 on /dev/sda
ERROR: sil: invalid metadata checksum in area 3 on /dev/sda
ERROR: sil: invalid metadata checksum in area 3 on /dev/sda
Found Ubuntu 13.04 (13.04) on /dev/sda2
done"

lts-Aspire-S3:~$ sudo fdisk -l

Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 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: 0x0004ed07

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 976895 487424 83 Linux
/dev/sda2 976896 49805311 24414208 83 Linux
/dev/sda3 49807358 625141759 287667201 5 Extended
/dev/sda5 49807360 166991871 58592256 83 Linux
/dev/sda6 166993920 264648703 48827392 83 Linux
/dev/sda7 264650752 362305535 48827392 83 Linux
/dev/sda8 362307584 420903287 29297852 83 Linux
/dev/sda9 459964416 538087423 39061504 83 Linux
/dev/sda10 538089472 577148927 19529728 83 Linux
/dev/sda11 577150976 608399359 15624192 83 Linux
/dev/sda12 608401408 625141759 8370176 82 Linux swap / Solaris
/dev/sda13 420904960 459956223 19525632 83 Linux

Partition table entries are not in disk order

Disk /dev/sdb: 2 MB, 2097152 bytes
255 heads, 63 sectors/track, 0 cylinders, total 4096 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: 0xffffffff

Disk /dev/sdb doesn't contain a valid partition table

Thank you for any help

[oldfred]

Moved to your own thread as other thread was dual boot with Windows.

Are you running RAID or had drive in RAID before? The sil error looks like a RAID type error. Drives need RAID meta data removed it not in RAID now.

Do not run this if you do have RAID.
Presence1960 on remove old raid setting from HD
http://ubuntuforums.org/showthread.php?t=1325650
sudo dmraid -E -r /dev/sda
sudo dmraid -E -r /dev/sdb
Also check BIOS for raid settings
More discussion:
http://wwww.ubuntuforums.org/showthread.php?p=9274738#post9274738

Most desktops do not need separate /boot, but if you have a separate partition for /boot then you can not use it for any other install.
Post the link to the BootInfo report that this creates. Is part of Boot-Repair:
https://help.ubuntu.com/community/Boot-Info
Boot Repair -Also handles LVM, GPT, separate /boot and UEFI dual boot.:
https://help.ubuntu.com/community/Boot-Repair
You can repair many boot issues with this or 'Create BootInfo' report (Other Options) & post the link it creates, so we can see your exact configuration and diagnose advanced problems.
LighterWeight (Lubuntu based) Boot-RepairCD
http://sourceforge.net/projects/boot-repair-cd/files/
Install in Ubuntu liveCD or USB or Full RepairCD with Boot-Repair (for newer computers)
https://help.ubuntu.com/community/LinuxSecureRemix


If you overwrote a /boot partition you may be able to edit fstab and chroot into your install to reinstall grub & kernels.

[fonsi2099]

till today no one of those options help to find s solution. the result are the same I can only boot my sda13 partition with the 12.04, but the sda2 partition with 13.04 is not more posssible to boot.

I think the next and most clean option will be to make a new reistallation of 13.04 and 12.04.02, Before backup your data!!!!!


many thanks to all for your effort.

:popcorn:

[fantab]

Deleted. Got confused with antoher thread/post.