On 2013-09-03, Alan McKinnon <alan.mckin...@gmail.com> wrote: > On 03/09/2013 23:19, Grant Edwards wrote: >> On 2013-09-03, Alan McKinnon <alan.mckin...@gmail.com> wrote: >>> On 03/09/2013 19:05, Grant Edwards wrote: >>>> On 2013-01-07, Walter Dnes <waltd...@waltdnes.org> wrote:
[...] >>>>> isohybrid install-x86-minimal-20121213.iso [...] >>>>> * I then copied it over to a USB stick (/dev/sdb) with the command... >>>>> >>>>> dd bs=4M if=install-x86-minimal-20121213.iso of=/dev/sdb [...] >>>> After running the isohybrid command, I compared the resulting image >>>> with the original. They were identical. I copied the image to a USB >>>> flash drive, and it booted just fine. >>>> >>>> It seems that the minimal install .iso images are already built for >>>> hybrid booting from either CD or a generic block device (e.g. USB >>>> mass-storage device). >>>> >>>> So what's the deal with http://wiki.gentoo.org/wiki/LiveUSB/HOWTO? >>>> >>>> Why isn't it just the steps below? >>>> >>>> 1) Copy the minimal install .iso to USB mass storage device. >>>> >>>> 2) Boot from USB mass storage device. >>> >>> Copying an .iso to a USB stick does not give you a bootable USB >>> stick. >> >> It does for recent Gentoo minimial install .iso images. > > Now I'm confused, let's clarify. Which of these meanings of copy are you > using: > > cp my_big.iso /where/i/mounted/the/stick > > dd if=my_big.iso of=/dev/sdb Sorry about that. The latter. The actual command is shown about 32 lines up (except that my minimal install .iso was more recent)... IIRC, the last time I tried 'cp' it worked just as well as 'dd' cp install-x86-minimal-20121213.iso /dev/sdb The Wiki page at http://wiki.gentoo.org/wiki/LiveUSB/HOWTO shows a rather involved process for creating a bootable USB drive from a Gentoo minimal install .iso. However, AFAICT, you don't have to do any of it. You can just write the .iso image to the usb flash drive and then boot from it. I presume that at some point in the past, the minimal install .iso images weren't bootable from a "hard-drive", and the process on the wiki page was needed. But since the Gentoo .iso images _are_ bootable, why not just say so and get rid of the old recipe? [The old recipe still works, and perhaps it's useful for generic .iso images from elsewhere, but for a Gentoo install .iso it's a bit of a time-waster.] -- Grant Edwards grant.b.edwards Yow! BELA LUGOSI is my at co-pilot ... gmail.com
