On Wed, 12 Dec 2012, Golmer Palmer wrote: > Alan Stern <stern@...> writes: > > > > > On Mon, 10 Dec 2012, Golmer Palmer wrote: > > > > > Alan Stern <stern@...> writes: > > > > > > > > > > > Right. This limit represents a hypothetical 256-minute CD. > > > > > > 256 minutes CD, ok! (75 represents 75 sectors/sec) > > > > Yes. > > So 255M:60S:75F Well, actually 255M:59S:74F. But yes, you got the idea. > > > Yes, not a DVD. But if you "mount" a DVD image with the cdrom emulation, it > > > works! So, please, update the limit to 950*60*75 (4,275,000 sectors). This > is an > > > hypothetical 950 minutes CD-ROM, with a size bigger than a DVD-9 "DATA" > disk. > > > > I can't. The CD spec requires that under certain conditions, block > > addresses on the device be presented in "MSF" format, where M is > > minutes, S is seconds, and F is frames, and each occupies a single > > byte. There's no way to represent more than 255 minutes. > > Ok, now I know why this limit! > > I feel that in the future a CD/DVD/BD USB gadget driver can be interesting. We are always willing to accept patches to add new features. > I'll post my tests over the patches for cdrom booting when I can apply them to > my Android device. Good. > Thank you Alan! You're welcome. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
