Hi Chris, Thank you. I will try FSMegaInfo as well.
Ryota 2008/9/10 Ken Thomases <[EMAIL PROTECTED]>: > On Sep 9, 2008, at 10:23 PM, Chris Suter wrote: > >> On Wed, Sep 10, 2008 at 10:10 AM, Ryota Tsukiashi >> <[EMAIL PROTECTED]>wrote: >> >>> I am writing a cocoa application for our firweire device. I need to >>> know if the system is started up from firewire disk. For PowerPC with >>> Mac OSX 10.4/10.5, I have used information from "nvram boot-device". >>> For IntelMac with 10.4/10.5, I have used "nvram efi-boot-device". I am >>> not sure if it is a proper way, but it has been working OK. >> >> >> No, it's not the right way. That will only tell you what the start up disk >> is set to which isn't necessarily what you started from (for example, you >> could have booted by holding down the Option key). >> >> One way to do this is to use fsstat on "/" to get the BSD information and >> then use IOKit (IOServiceGetMatchingService) to find the device that >> refers >> to and then you might have to go up the hierarchy until you hit the level >> you want. >> >> There might be easier ways to do this; that's just the one I first thought >> of. > > The Disk Arbitration framework may be easier to use than IOKit. > > You might look at the FSMegaInfo sample code for inspiration regarding other > techniques: > > http://developer.apple.com/samplecode/FSMegaInfo/index.html > > Cheers, > Ken > > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
