On Tue, Feb 12, 2013 at 02:53:46PM +0300, Bob Lemar wrote: > Hi, guys > > I got new SEAGATE Expansion USB 3.0 and want to boot linux from it. > > I have successfully booted various linuxes before with different > loaders from USB thumb flashes. But I cannot do it with this external > drive. > > There are three problems: USB3, 4K sectors and >2TB. > > I try grub2 (fedora 17). Grub2 doesn't power on external USB drive. > The drive is spinning up only after some OS is starting to load after > grub2. So grub2 and BIOS don't see external HDD. > > > Can someone point me out: > > 1. either how to turn on external USB3 driver while computer is in grub2? Try asking on the grub2 mailing list, nothing we can do here about that, sorry. > 2. or how to load OS with kexec from external USB3 4K sector drive > (from OS which is located at internal HDD)? The sector size shouldn't matter at all for kexec, although I don't think that kexec supports booting from USB, but I haven't tried it to verify it or not. Try asking the kexec developers. good luck, greg k-h -- 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