CentOS - Jan 2012 - CentOS 6 (G)parted re-aligning existing partitions?

I used Hiren Boot CD (Some tool on it) to create 8 partitions for 
Windows XP and CentOS 6.

Now, CentOS6 Disk Utility reports for first partition:

"Warning: The partition is misaligned by 512 bytes. This may result in 
very poor performances. Repartitioning is suggested.",

and similar warnings almost all other partitions.

Since I already have both Windows (NTFS) and CentOS 6 installed, I was 
wondering is there any easy way of re-alligning them, maybe via parted?

Can someone write short to-the-point howto for repartitioning ext4 
partitions (/boot especially)? NTFS partitions I can ghost without a 
problem and resize them when I returnin it on the HDD. It would be nice 
to experiment, but I am out of time.

I did fdisk -l /dev/sda > file and I can do dd to image file, but how 
about resizing/repartitioning?

I read somewhere that it is good to leave 1MB free before first 
partition, so it can be aligned?

Thanks,

-- 

Ljubomir Ljubojevic
(Love is in the Air)
PL Computers
Serbia, Europe

Google is the Mother, Google is the Father, and traceroute is your
trusty Spiderman...
StarOS, Mikrotik and CentOS/RHEL/Linux consultant

On 16-01-12 22:25, Ljubomir Ljubojevic wrote:
> I used Hiren Boot CD (Some tool on it) to create 8 partitions for
> Windows XP and CentOS 6.
>
> Now, CentOS6 Disk Utility reports for first partition:
>
> "Warning: The partition is misaligned by 512 bytes. This may result in
> very poor performances. Repartitioning is suggested.",
>
> and similar warnings almost all other partitions.
>
> Since I already have both Windows (NTFS) and CentOS 6 installed, I was
> wondering is there any easy way of re-alligning them, maybe via parted?
>
> Can someone write short to-the-point howto for repartitioning ext4
> partitions (/boot especially)? NTFS partitions I can ghost without a
> problem and resize them when I returnin it on the HDD. It would be nice
> to experiment, but I am out of time.
>
> I did fdisk -l /dev/sda>  file and I can do dd to image file, but how
> about resizing/repartitioning?
>
> I read somewhere that it is good to leave 1MB free before first
> partition, so it can be aligned?
Here's how my partitions look like on a box with F16. Afaik the anaconda 
in F16 properly aligns partitions. Note the initial start at 2048.

$ sudo fdisk -l

Disk /dev/sda: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 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: 0x0003778c

    Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      411647      204800   fd  Linux raid 
autodetect
/dev/sda2          411648  3890251953  1944920153   fd  Linux raid 
autodetect
/dev/sda3      3890251954  3907029167     8388607   fd  Linux raid 
autodetect


Maybe you could get an F16 CD/DVD and create the partitions with it?

Regards,
Patrick