Need help With Alignment...

flamenko

Senior member
Apr 25, 2010
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Need some assistance because I have never run into this before.

Acronis Image for a 64GB drive to a 256 SATA 3 and the alignment wont set in Windows 7. I know this because only my 4k write scores are affected and are 4-5MB/s. When I format the drive, I get the proper 60MB/s...

If I image again back to low scores.

I have tried to install partitioned and not partition, allocated and not allocated...

Can I adjust the alignment after the fact? Alignment software?

Cant use Paragon as it is not x64.
 

mv2devnull

Golden Member
Apr 13, 2010
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A disk has physical sectors and logical sectors. Usually they are of the same size. Logical sectors are also often known as LBA (logical block addresses).

A partition (in DOS label partition table) defines first and last LBA of a volume.

Filesystem writes its data (both metadata and files) within the LBA's of one volume. Filesystem does not have to be as large as the volume.

In principle one could shrink a filesystem, decrease the ending LBA of its partition, and then shift every sector of the volume content with copy in place in order to get the starting LBA aligned.

GParted is one such tool that might be able to do the job. You would boot a Live OS from CD/USB that does have GParted, and do the job.
 

Emulex

Diamond Member
Jan 28, 2001
9,759
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wheres the link to resize using gparted live iso the main drive by moving it right (smaller) then inserting a stub partition to re-align the end result?

i had a link but can't seem to find the bookmark it walks you through the process. its dangerous so back yo self up.
 

flamenko

Senior member
Apr 25, 2010
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I have never encountered the alignment problem even once but with this, there is no way I can clone and Image over. I wondered if it was because of diff size (64/256) or SATA II to SATA III but there is just no way to do it.

Checked and Im fine with a clean install but I cannot afford to lose my config at present.

Thanks guys... oh can I realign after the image?
 

Voo

Golden Member
Feb 27, 2009
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Thanks guys... oh can I realign after the image?
Yeah you basically just shift your existing partition a few bytes so it'll start on a correct boundary. Haven't done that in a while and would have to look through the gparted man pages myself, but Emulex mentioned a link so I'd look for that.
 

VirtualLarry

No Lifer
Aug 25, 2001
56,587
10,227
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if you are restoring an image that isn't aligned, or even if the original image is aligned, it is a REQUIREMENT that the tool being used allows you to align the partition when it is being restored.

Most tools won't, unless they have been recently updated.