Question about alignment on my Samsung 840 Evo

[G73S]

I have two 1 TB Samsung 840 Pro SSDs in my laptop

The first one was partitioned and formatted using the Windows 7 Setup

The 2nd one was partititioned in Windows Disk Management using the default allocation size

both are exactly the same, 1 partition each

Now when I ran AS SSD Benchmark, I noticed the OS drive is aligned @ 234496K and the 2nd drive is partitioned @ 132096K

1) How come they were aligned differently? Doesn't the Windows 7 Setup also align at the default as well?

2) Shall I format the 2nd SSD and align it the same as my 1st one?

3) When choosing the alignment sizes in Disk Management, I get 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K

I don't see any of the values above? so how in the world am I supposed to align the 2nd drive @ 234496K like the first one is?

PS: I did use Samsung Magician to Overprovision both by 10%

First Drive:

Second Drive:

 

[Deders]

I think so long as if you divide those numbers by 4 and they give integer results (no decimal places) you should be ok. (Which they do)

 

[dave_the_nerd]

Well, the Windows setup creates a small (100MB iirc) recovery partition, Disk Management doesn't.

But that explains the difference - it doesn't explain why the one you did in Disk Management is aligned so far into the disk. I'm sure there's a reason. You could take a look at the partition map with Gparted or something and it might tell you more info.

That said, I wouldn't worry about it - it's not a lot of wasted space.