I now this topic has been somewhat discussed before but I haven't managed to get a clear picture.
I’m trying to figure out whether partition alignment to erase block size is necessary with recent-ish SSD’s.
I have an OCZ Vertex 3 SSD with Windows 7 and Linux (XBMCbuntu) operating systems already installed in dual boot.
Gathered my drive’s block sizes from this thread on OCZTechnologyForum
- Page size: 8 KB
- File alloc. unit: 4 KB (ntfs)
- Erase block size: 2048 KB
Windows 7 setup created the first partition with a 1MB offset (1048576 bytes).
Partition Disk #0, Partition #0 Partition Size 48,83 GB (52.428.800.000 bytes) Partition Starting Offset 1.048.576 bytes Partition Disk #0, Partition #1 Partition Size 31,23 GB (33.531.363.328 bytes) Partition Starting Offset 52.429.848.576 bytes
The online tool SSD Aligment Calculator says the partition is misaligned regarding the erase block size since the latter is 2MB.
Since that online tool is oldish... is this correct ?
If so, is it important and worth the effort of moving around/resizing partitions to align to a 2MB offset and multiples-of boundaries?