On 2013-04-22 21:39 (GMT+0200) Eric Auer composed:

>> MiB cyl: * 64 32 (required for maximum performance for 4k sector aka
>> "advanced format" HDs)

> Why would 4k sector disks use any geometry at all?

Disks don't "use" geometry. PC BIOS partition tables entries have multiple 
components. To conform to any of the somewhat inconsistent PC BIOS partition 
table "standards", entries have both CHS components and LBA components. 
Partitioning tools are what use CHS for the purpose of reading and writing 
conforming table entries, and very significantly, choosing partition start 
sectors.
http://fm.no-ip.com/SS/dfsPTedit.png

CHS * 64 32 is about making sure partition starting points are aligned on 4k 
multiples for performance reasons.
http://www.seagate.com/tech-insights/advanced-format-4k-sector-hard-drives-master-ti/
-- 
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words are persuasive." Proverbs 16:21 (New Living Translation)

  Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/

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