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SSD fresh install of Windows 7 4k alignment question

post #1 of 5
Thread Starter 
I did a search on the forum and on Google and couldn't find a relevant answer.

I'm doing a fresh install of Win7 Pro on a 120GB OCZ Vertex 2.

How do I know during install that the software 4k aligned the drive?

I know that after install and formatting new SSDs under Windows you can manually set it to 4k, but how do I do that during installation?
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post #2 of 5
I was trying to get the options to change allocation size during install too. Never did come up with a way other than a custom install disk using vlite or something. I even tried formatting the drive on another computer with a allocation size of 32K but windows changed the C: drive back to 4K on install, but it did leave the D: drive as 32K.
post #3 of 5
Thread Starter 
Are you saying that during a fresh install Win7 automatically aligns the SSD to 4k?
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post #4 of 5
SSDs don't need to be aligned to 4K. Most need to be aligned to 128K or 256K.

Windows 7 lines up the first partition exactly 1MiB in, accomplishing this. (even when you have multiple SSDs in RAID)

Allocation units have nothing to do with proper partition alignment. It's recommended you stick with 4K allocation units.
     
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Hard DriveHard DriveHard DriveHard Drive
Hitachi 2TB - HDS723020BLA64 Crucial M500 960GB - CT960M500SSD1 WD 4TB Black - WD4001FAEX WD 4TB Black - WD4001FAEX 
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post #5 of 5
Thread Starter 
Quote:
Originally Posted by Kramy;14323487 
SSDs don't need to be aligned to 4K. Most need to be aligned to 128K or 256K.

Windows 7 lines up the first partition exactly 1MiB in, accomplishing this. (even when you have multiple SSDs in RAID)

Allocation units have nothing to do with proper partition alignment. It's recommended you stick with 4K allocation units.

I see, I got allocation units and alignment mixed up.
Shhhhh!
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 930 Gigabyte GA-X58A-UD3R XFX 5870 1GB 6GB G.SKILL PI 1600MHz 
Hard DriveOptical DriveOSMonitor
120GB OCZ Vertex 2, 2x Hitachi 2TB (7K2000) Pioneer Blu-ray BDR-205BKS, Samsung SH-S243N Windows 7 Ultimate x64/WinXP Pro SP3 Samsung P2570 
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Gel 
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Shhhhh!
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 930 Gigabyte GA-X58A-UD3R XFX 5870 1GB 6GB G.SKILL PI 1600MHz 
Hard DriveOptical DriveOSMonitor
120GB OCZ Vertex 2, 2x Hitachi 2TB (7K2000) Pioneer Blu-ray BDR-205BKS, Samsung SH-S243N Windows 7 Ultimate x64/WinXP Pro SP3 Samsung P2570 
KeyboardPowerCaseMouse
Logitech Elite Keyboard Corsair 850HX Lian-Li PC-B70 Logitech MX510 
Mouse Pad
Gel 
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