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Windows 7 x64 didn't align my partition...

post #1 of 15
Thread Starter 
Apparently Windows 7 doesn't always align your partition. I didn't know about this before I installed my OS and my apps, and apparently now I need to do a fresh install to correct it.

Does this seem correct to you? And why does the driver show up as mv91xx?

I installed the latest Intel drivers, and my MB is set up to configure SATA as RAID (which is AHCI).

post #2 of 15
http://www.overclock.net/11029968-post13922.html

This is for Striker36 and all SSD new INSTALLERS

First before you do anything....before you begin the new installation make sure you have the HDD option in your BIOS set to AHCI. Not IDE OR SATA. AHCI will include SATA but it won't work the other way around.

Thanks Rockr69 and twocables.

Quote:
Originally Posted by TwoCables View Post
I think that the installer doesn't align it properly to begin with. Here's a method that was recently taught to me that I guarantee will work perfectly to properly align a solid state drive:
  1. To make things easy, disconnect all other drives (but leave any optical disc drives connected)
  2. Boot from the Windows 7 installation DVD
  3. When you see the "Install now" button, click "Repair your computer"
  4. You'll see a little window named "System Recovery Options" appear that searches for Windows installations.
  5. When it finishes, you will see a dialog box. Select "Use recovery tools that can help fix problems starting Windows. Select an operating system to repair.", and then click Next.
  6. Click "Command Prompt"
  7. Type diskpart to load DiskPart
  8. Type list disk
  9. Type select disk 0 (or whichever number your SSD gets)
  10. If you want to be sure you have the right one selected, then type list partition.
  11. Once you know you have the right drive selected, type clean.
  12. Type create partition primary align=1024
  13. Type format quick fs=ntfs
  14. It will appear like it's going to take forever, but then like 5-10 seconds later, it suddenly finishes, jumping straight from 0% to 100%.
  15. Type active
  16. Type list partition to see your creation.
  17. Type exit
  18. Type exit
  19. Click Restart
  20. Boot from the DVD again and perform a normal installation using the "Custom (advanced)" type of installation.

So to summarize:
  1. Get to that Command Prompt
  2. Type diskpart
  3. Type list disk
  4. Type select disk 0 (or whichever number it turns out to be)
  5. Type clean
  6. Type create partition primary align=1024
  7. Type format quick fs=ntfs
  8. Type active
  9. Type exit
  10. Type exit
  11. Click Restart
  12. Install Windows 7

This will prevent Windows 7's installer from creation that 100MB partition, and it will also be properly aligned!
If this helps you send some love to "Two Cables" for his wisdom.

BTW. Two Cables informed me that he got this info from lsdmeasap
Much love to you and all.
Edited by Enigma8750 - 12/31/10 at 7:37pm
    
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post #3 of 15
Thread Starter 
It was my understanding that Windows 7 automatically aligned partitions; you can find that written all over the web. So what gives?

EDIT: When I installed the OS I was in AHCI mode, I converted after OS install when I put my RAID arrays in.
post #4 of 15
It don't .. It leave a 100mb partition of unusable space on the drive but if you do the above you get all your Drive. Aligned perfectly.

Takes 5 mins.. No problem.

This procedure was given to us by a man that writes Bios for a living.. He knows.. Trust him. It's easy. just command Prompt and old DOS commands.
    
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post #5 of 15
If you used Windows Setup, Disk Management, or Diskpart to create the partitions, then yes, it would be aligned to 1024 or 103,424 depending on if it's the system drive or not.

If you use a third-party program to create the partition then results may vary.

Also, RAID arrays are not always aligned...
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post #6 of 15
Whats the advantage of doing this? I never did it when I installed Windows 7 on my ssd and it works just as it should.
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post #7 of 15
Quote:
Originally Posted by fashric View Post
Whats the advantage of doing this? I never did it when I installed Windows 7 on my ssd and it works just as it should.
of what do you speak?

I'm confused...

The advantage of doing _______
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post #8 of 15
The steps in post 2
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post #9 of 15
Quote:
Originally Posted by fashric View Post
The steps in post 2
the main advantage would be 100 MB of additional disk space.

By default Windows creates a 100 MB "Recovery Partition" at the start of the disk, using TwoCables instructions to create your partition using the diskpart program allows you to avoid this.
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post #10 of 15
The low write speed can be attributed to using Marvell drivers and lack of TRIM..
Use one of the non 6Gbps ports (put your SSD on the Intel controller).
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