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I just bought a new SSD (OCZ Vertex 2) and plan to do a clean install of Maverick on it (/home is on a separate HDD). I read that it is wise to align SSD partitions.

What advantages does it truly bring to have an aligned partition on a SSD?

And how do I create an aligned Ext4 partition for the new SSD during the installation of Ubuntu 10.10?

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up vote 13 down vote accepted

What advantages does it truly bring to have an aligned partition on a SSD?

Basically it's all about better performance. If it's really such a big deal with current generation SSDs - who knows, but aligning the partition won't hurt.

Anyways, Ubuntu's installer automatically aligns the partitions correctly. The first partition starts at sector 2048, that is after 2048 sectors á 512 Bytes = 1 MiB, and 1 MiB is evenly dividable by all common SSD block sizes.

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Thanks. But just to clarify, are partitions aligned correctly even if I create them form the "Specify partitions manually" menu at install? –  Uli Dec 27 '10 at 0:44
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@Uli: Yes, they are (I just checked to make sure). –  htorque Dec 27 '10 at 10:00
    
Thank you very much for your help! –  Uli Dec 27 '10 at 10:20
    
to check whether alignment is correct this question might be helpful askubuntu.com/questions/50428/… –  user44439 Feb 10 at 12:56

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