Solved SSD Alignment

JJG

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I have just migrated my Win8 HDD to an SSD and ran Diskpart to check the alignment. The attached shows the result. Note Partition 1's (The UEFI partition) offset is 1024KB which is fine, I think. Partition 2's (Win 8 System) offset is 330MB and Partition 3's (Data) is 60GB. Neither of the last 2 is divisible by 4 evenly. Does that mean they are not properly aligned for an SSD? Or should I just not worry about it?

Thank you very much.
 

Attachments

  • Diskpart.PNG
    Diskpart.PNG
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My Computer

System One

  • OS
    Windows 8
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Dell XPS 8500
    CPU
    3.1g Intel Core i5-3350P
    Motherboard
    Dell 0nW73C A000
    Graphics Card(s)
    AMD RADEON HD 7570
    Sound Card
    AMD high definition audio device
    Monitor(s) Displays
    Samsung AMB23301
    Screen Resolution
    1920 x 1080
    Hard Drives
    1TB Manufacturer not known
    Internet Speed
    Cox High Speen
    Browser
    Firefox
I'm not completely sure, but I think that since your first partition's offset is good the 2nd and 3rd are ok also, since they follow the first one.

I think...:think:

Here's mine:
 

Attachments

  • Capture.PNG
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My Computer

System One

  • OS
    Windows 8.1 Pro x64
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Dell E520
    CPU
    Intel Q6700 Core 2 Quad - 2.66 GHz
    Motherboard
    Whatever Dell put in there...
    Memory
    8 GB Mushkin 800 MHz DDR2
    Graphics Card(s)
    NVIDIA GTX 650 - 2 GB GDDR5
    Sound Card
    Integrated
    Monitor(s) Displays
    2 x 19" ViewSonic LCD's
    Screen Resolution
    2560 x 1024
    Hard Drives
    1 Intel X25-M 120G SSD, 2 WD RE4 2TB HD's
    PSU
    PCPower & Cooling Silencer 500 Watt
    Internet Speed
    100/10 Time Warner Cable
Of course the last 2 are divisible by 4. The division must be made at the KB level, not the MB level. and e.g. 330MB is 330.000KB.
 

My Computer

System One

  • OS
    Vista and Win7
    System Manufacturer/Model
    2xHP, 2xGateway, 1xDell, 1xSony
    Hard Drives
    5 SSDs and 12 HDs
The offsets need to be divisible by 4 KB. The last two are given in MBs and GBs, which are divisible by 4K. Assuming they are strict multiples of MBs and GBs, you are fine. To double-check, open a command prompt as an adminstrator and run:

Code:
wmic partition get BlockSize, StartingOffset, Name, Index

The last column in the output should be the offset in bytes for the starts of the partitions, and it will be divisible by 4096 if aligned.
 

My Computer

System One

  • OS
    Windows 8.1 Pro with Media Center
Of course the last 2 are divisible by 4. The division must be made at the KB level, not the MB level. and e.g. 330MB is 330.000KB.

Yep, of course you are right. I forgot about that.
 

My Computer

System One

  • OS
    Windows 8
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Dell XPS 8500
    CPU
    3.1g Intel Core i5-3350P
    Motherboard
    Dell 0nW73C A000
    Graphics Card(s)
    AMD RADEON HD 7570
    Sound Card
    AMD high definition audio device
    Monitor(s) Displays
    Samsung AMB23301
    Screen Resolution
    1920 x 1080
    Hard Drives
    1TB Manufacturer not known
    Internet Speed
    Cox High Speen
    Browser
    Firefox
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