4 kB support is implemented in the HDD firmware. AFAIK, (Mac) OS X uses 4 kB blocks for all file systems on GPT formatted disks. That means all HFS+ startup disks on Intel Macs are automatically 4 kB block compatible.How to check if the HDD is using 4k Advanced format in osx? thanks
4 kB support is implemented in the HDD firmware. AFAIK, (Mac) OS X uses 4 kB blocks for all file systems on GPT formatted disks. That means all HFS+ startup disks on Intel Macs are automatically 4 kB block compatible.
That's true, but there's more: the OS, when creating the partitions, has to recognize that kind of disk, and create them properly aligned.
http://www.seagate.com/tech-insights/advanced-format-4k-sector-hard-drives-master-ti/
For example, Windows XP and Vista (without SP1) cannot create correctly aligned partitions for the AF hard disks (see the "Aligned Versus Unaligned Hard Drive Partitions" chapter in the link), and that can degrade a lot the performance
4k can be seen in windows, Linux...but nothing for osx.?
Advanced Format technology is designed to work with the most current operating systems, such as
Windows® Vista, Windows® 7 and Mac® operating systems.