Re: finding the offset of a partition
Re: finding the offset of a partition
- Subject: Re: finding the offset of a partition
- From: Shawn Erickson <email@hidden>
- Date: Fri, 3 Feb 2006 08:49:56 -0800
On 2/3/06, Jason Bobier <email@hidden> wrote:
> In the driver, the disk and the partition are represented by IOMedia
> objects and you can use getBase on the partition to know where it is
> relative to the disk. So the system knows how the two are related.
>
> I'm trying to get the offset on disk of a particular file. In order
> to do this I use F_LOG2PHYS which gives me the offset from the
> beginning of the partition. So I need to add the partition offset
> somehow.
Are you doing raw access to the whole disk? or to a slice (partition)
of that disk? The offset may already be dealt with for you depending
on how you are doing your IO.
-Shawn
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