Windows 8 and 8.1 Forums

SSD Alignment

  1. #1


    Posts : 128
    Windows 8

    SSD Alignment


    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.
    Attached Thumbnails Attached Thumbnails Diskpart.PNG  

      My System SpecsSystem Spec

  2. #2


    Posts : 146
    Windows 8.1 Pro x64


    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...

    Here's mine:
    Attached Thumbnails Attached Thumbnails Capture.PNG  
      My System SpecsSystem Spec

  3. #3


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    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 System SpecsSystem Spec

  4. #4


    Posts : 454
    Windows 8.1 Pro with Media Center


    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 System SpecsSystem Spec

  5. #5


    Posts : 128
    Windows 8


    Quote Originally Posted by whs View Post
    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 System SpecsSystem Spec

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