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Re: Disk Partition Offset?

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Re: Disk Partition Offset?

Subject: Re: Disk Partition Offset?
From: Kevin Elliott <email@hidden>
Date: Sat, 08 Nov 2008 16:22:49 -0800

On Nov 7, 2008, at 9:07 PM, Duane Murphy wrote:

Is there a way to determine the sector offset on the disk of a volume
(or partition) without actually parsing the partition table?

I don't believe so. In the end, IOKit (specifically the IOPartitionScheme classes) is the final authority on this and the information is not simply exported from IOPartitionScheme drivers. Most (all?) of the PartitionScheme's hide free space gaps by not publishing IOMedia objects for them. And nothing in the overall design requires that IOMedia objects be created in the same order as they exist on disk. Obviously such a driver would be unusual... but that's not much to go on when it comes to mass storage!

-Kevin Elliott
email@hidden
http://web.mac.com/kelliott/

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  >Disk Partition Offset? (From: "Duane Murphy" <email@hidden>)




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