Documentation says to use boot.iso to create minimal boot media for BIOS, and 
efiboot.img for UEFI. This appears to be outdated but I need some clarification 
on a few things before taking it up with the docs team. Here is the docs page 
for reference, I'm referring to the preface and the matrix:

http://docs.fedoraproject.org/en-US/Fedora/18/html/Installation_Guide/sn-making-media.html

These two files are identical:

/pub/fedora/linux/releases/18/Fedora/x86_64/os/images/boot.iso
/pub/fedora/linux/releases/18/Fedora/x86_64/iso/Fedora-18-x86_64-netinst.iso

They have the same sha256sum. So what's the distinction? Why different 
locations and names? I'm going to guess that boot.iso forms the base bootable 
installer for everything else; and netins is the "public" version of this. Yet 
documentation tells users to download boot.iso. It seems to be a more obscure 
file, slightly more difficult to locate, and impossible to know what version of 
Fedora it is unless you look inside or boot it. Conclusion: we should tell 
users to use netinst if they want to create minimal boot media. Agree? Disagree 
(and why)?

Next, what is the use case for efiboot.img? Because I can't figure out why I'd 
use it, at all. It only contains boot loaders. There's no vmlinuz, initrd, 
system, or installer. So it does not qualify as minimal boot media, yet that's 
what's recommended in documentation for UEFI minimal boot media. In fact, the 
last three UEFI entries in the matrix appear to be wrong:

1. UEFI/Installation USB flash drive: This works with the DVD ISO dd'd to USB 
media. It even appears to work for UEFI Secure Boot, when dd'd. I can't vouch 
for any other method [1].

2. Boot CD or boot DVD: This works with the netinst.iso burned to actual media.

3. Boot USB flash drive: efiboot.img does not work as "minimal bootable USB 
flash drive that boots the installer". However, netinst.iso dd'd to a USB stick 
does work.

So it appears in every single case where boot.iso is in the matrix, where 
efiboot.img is in the matrix, and two "Not available" notes in the matrix, all 
work with netinst.iso (or the one case of DVD ISO dd'd to USB media). Am I 
understanding this correctly?

Chris Murphy

[1] I'm honestly confused why LiveCD Creator is recommended first and second. 
Livecd-tools is recommended 3rd. And dd is linguistically not recommended, ergo 
recommended only as a last resort. I have had extremely high success with dd to 
USB media, and comparatively low success with the other methods. livecd-tools 
can be as good, but it's 15000% more complicated, and the Installation Guide 
provides zero guidance on any of the livecd-tools switches for either UEFI use 
case, so failure here will be very high.

Why is this order being used? dd is recommended dead last, really? Maybe 
someone more experienced with installations with the various methods can 
convince me that dd is actually pretty flakey and I've been lucky.
-- 
test mailing list
test@lists.fedoraproject.org
To unsubscribe:
https://admin.fedoraproject.org/mailman/listinfo/test

Reply via email to