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Sean's Windows 7 Install & Optimization Guide for SSDs & HDDs - Page 75

post #741 of 5384
Quote:
Originally Posted by xandypx View Post

Basically yes, but then again... not exactly. Trying not to get too technical, as it can be rather confusing.... Unfortunately the terminology used to explain how this works is pretty bad. There's just no "good" way to explain it because of the history of the term "Sectors". "Sectors" in discussing storage media is actually a standard that manufacturers adhere to just like a USB standard, a PCIe standard, a memory standard, or any other type of "standard" that ensures inter-operability of different components manufactured by different companies. It used to be that 63 “sectors” made up a single track of a spinning HDD.
The reason we talk about using a 4096 alignment, is because NOW, most newer HDD/SSD have a 4K "sector" Advanced format standard. The term "Sector" when talking about a spinning disk, used to refer to a space of approximately 512 bytes. The standard sector size of 512 bytes for magnetic disks, was replaced with certain media, to 1024 byte sectors with the introduction of media players and camera storage. Now we have 4096; the new 2011 standard, "Advanced Format" sectors, so now a "sector" is considered 4096 bytes.
A better way to explain the first "33" pieces of information on a GPT drive, is by looking at them as "Logical Blocks" of data on the drive. GPT drives, like most modern spinning hard disks, use logical block addressing (LBA) in place of cylinder-head-sector (CHS) addressing. As I mentioned earlier, the protective MBR of a GPT drive is contained in "LBA" ("sector") 0, the GPT header is in "LBA" 1, and the partition table of the drive follows that. Windows reserve the first 16,384 bytes (33 "sectors"/LBAs) for the GUID Partition Table, leaving LBA 34 as the first usable sector of the drive.
Windows 7 uses a default 1024 alignment for the first partition so that it does not cause a problem with misalignment of the entire drive. If it weren't for discussions and guides like this thread, most people would just opt to let windows installation perform the action of alignment. Prior to Windows 7, major alignment issues were common place, although few end users really noticed. Without the 1024 alignment of the first partition, a misalignment would occur because any partition placed immediately after the GUID partition table (the first 33 LBAs), would be placed at block LBA 34, without a specified offset. This also occurred with MBR, so GPT is not unique with this potential problem. A MBR occupies the first 512 bytes of any MBR drive, and the same problem occurs when a first partition is placed immediately after the MBR. this location falls in the middle of a sector boundry. just what is trying to be avoided by alignment.
On an "advanced format" 4KiB drive (SSDs, and most new magnetic HDDs), the next 4KiB sector boundary begins at LBA 40. By using a 1024 Offset, windows ensure that your first partition starts at what should be the beginning of a 4KiB sector boundary.
Hopefully not too confusing.

One of the clearest explanations I've seen. Once again, +rep
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post #742 of 5384
I followed the guide to a . EXCEPT!!!!!!! i didnt do all of the preformatting... i just did the plain windows install/format. if i reinstall with the different stuff will i see better performance?
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post #743 of 5384
Thread Starter 
Quote:
Originally Posted by kill View Post

I followed the guide to a . EXCEPT!!!!!!! i didnt do all of the preformatting... i just did the plain windows install/format. if i reinstall with the different stuff will i see better performance?

You will be good, you don't need to do that part anyways.
post #744 of 5384
Okay, as you know i am new to this and i am little bit confused.

Please if you could explain me few things: ( one for now, i will be back asking for more probably and i am sorry about that wink.gif )

1)
Check to see if the TRIM command is being issued: Applies to SSD only ( This should ne enabled or disabled?)

Thanks,
s-f-r-j
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post #745 of 5384
Quote:
Originally Posted by s-f-r-j View Post

Okay, as you know i am new to this and i am little bit confused.
Please if you could explain me few things: ( one for now, i will be back asking for more probably and i am sorry about that wink.gif )
1)
Check to see if the TRIM command is being issued: Applies to SSD only ( This should ne enabled or disabled?)
Thanks,
s-f-r-j

if your only using one ssd with windows 7, it should be enabled by default. if for some odd reason its not enabled, just fix it. that why the commands were listed. but like i said, it should be enabled by default.

now with raid setups. even though the trim commands are enabled, trim is not available. from what ive been reading, intel is working on a fix that will be for all ssd, not just their own.
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post #746 of 5384
Thank you!
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post #747 of 5384
yw
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post #748 of 5384
Aftrer installing intel drivers from their website (Rapid storage Technology) i noticed this in AS SSD program:

iaStor, what is this?

8ND3.png

Is this normal? Is my SSD \ HDDs working full speed and as it should?

Regards
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post #749 of 5384
Thread Starter 
Quote:
Originally Posted by s-f-r-j View Post

Aftrer installing intel drivers from their website (Rapid storage Technology) i noticed this in AS SSD program:

iaStor, what is this?

8ND3.png

Is this normal? Is my SSD \ HDDs working full speed and as it should?

Regards

No your SSD is going to now corrupt and maybe even fry your PC now.

LOL JK

It is Intel's storage driver being used rather than the stock M$ one. wink.gif
post #750 of 5384
Ah, thats the reason for the smoke i see from my PC ? thumb.gif

Thank you biggrin.gif
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