gdisk complaints about partitions on ubuntu 12.04 LTS 64bit

[Jkhatri]

Dear all,

I've installed Ubuntu on 1TB SATA hdd, on my laptop. all works fine but 
gdisk and Ubuntu disk-utility  complaints about partition scheme and 
warns about performance degradation....do I need to worry about it ??,, 
if yes then  how to resolve this issue .. ??. Following[1] is the output 
of "gdisk" command for reference.


[1] --> sudo gdisk -l /dev/sda

GPT fdisk (gdisk) version 0.8.1

Caution: invalid backup GPT header, but valid main header; regenerating
backup header from main header.

Partition table scan:
   MBR: protective
   BSD: not present
   APM: not present
   GPT: damaged

****************************************************************************
Caution: Found protective or hybrid MBR and corrupt GPT. Using GPT, but disk
verification and recovery are STRONGLY recommended.
****************************************************************************
Disk /dev/sda: 1953525168 sectors, 931.5 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 438BB8A2-99C1-485E-A3C8-5AF1BC943425
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 1953525134
Partitions will be aligned on 8-sector boundaries
Total free space is 1972 sectors (986.0 KiB)

Number  Start (sector)    End (sector)  Size       Code  Name
    1              34          976596   476.8 MiB   0700
    2          976597         8976383   3.8 GiB     8200
    3         8976598       981201207   463.6 GiB   0700
    4       981201208       981298864   47.7 MiB    EF00
    5       981299200      1953523711   463.6 GiB   0700
-------------------------------------------------------------------------------------------------------------------------------


Warm Regards
-- 

*/

Jatin Khatri

RHCSA RHCE CCNA

www.fedoraproject.org/wiki/Jatin <http://www.fedoraproject.org/wiki/Jatin>

Phone (+91) 98250 20393

Save Paper, Save Environment.**
/*(Plant at least one tree in your life and nurture it !!!)*/


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