Re: Difference between dvd and dmg
Re: Difference between dvd and dmg
- Subject: Re: Difference between dvd and dmg
- From: j o a r <email@hidden>
- Date: Sun, 23 Oct 2005 20:02:46 +0200
On 12 okt 2005, at 18.54, Gerriet M. Denkmann wrote:
This is correct. So the question should be:
When one opens a raw device via open(/dev/rdisk...) how does one
get the hardware sector size (which in this case is needed for read
or pread)?
It seems to be 512 for disks, 2048 for rotating media. But maybe
there is something better than trial and error?
You can get this value from IOKit fairly easily, using
"kIOMediaSizeKey".
j o a r
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