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Michael Marineau 44f54cbf43 gpt: write backup GPT first, skip if inaccessible. 
Writing the primary GPT before the backup may lead to a confusing
situation: booting a freshly updated system could consistently fail and
next boot will fall back to the old system if writing the primary works
but writing the backup fails. If the backup is written first and fails
the primary is left in the old state so the next boot will re-try and
possibly fail in the exact same way. Making that repeatable should make
it easier for users to identify the error.

Additionally if the firmware and OS disagree on the disk size, making
the backup inaccessible to GRUB, then just skip writing the backup.
When this happens the automatic call to `coreos-setgoodroot` after boot
will take care of repairing the backup.
2016-09-23 12:25:53 -07:00
asm-tests asm-tests/i386-pc: Check that near jumps are 2 bytes. 2015-11-11 18:14:25 +00:00
build-aux Autogenerate ChangeLog from git changelog. 2015-01-24 17:29:50 +01:00
conf Do not include generated gnulib headers in tarball 2015-11-28 21:11:34 +03:00
docs Add smbios command 2016-01-06 12:46:22 -08:00
grub-core gpt: write backup GPT first, skip if inaccessible. 2016-09-23 12:25:53 -07:00
include gpt: rename and update documentation for grub_gpt_update 2016-09-22 11:58:44 -07:00
m4 update m4/extern-inline.m4 to upstream version to fix compilation on FreeBSD 2015-03-05 19:25:56 +03:00
po Remove reliance C.UTF-8 2015-11-08 20:23:15 +01:00
tests gpt: prefer disk size from header over firmware 2016-09-23 12:25:53 -07:00
themes/starfield Starfield theme. 2012-02-23 17:21:38 +01:00
unicode * unicode: Import Unicode 6.0 data. 2011-12-25 16:17:25 +01:00
util mkimage: zero fill alignment space 2015-11-06 21:33:28 +03:00
.gitignore gpt: start new GPT module 2014-10-18 13:54:54 -07:00
ABOUT-NLS automake commit without merge history 2010-05-06 11:34:04 +05:30
acinclude.m4 use TARGET_LDFLAGS in grub_PROG_OBJCOPY_ABSOLUTE 2015-07-05 08:21:38 +03:00
AUTHORS 2005-09-03 Yoshinori K. Okuji <okuji@enbug.org> 2005-09-03 16:54:27 +00:00
autogen.sh autogen: Use cp instead of ln -s. 2015-11-08 18:45:57 +01:00
BUGS * BUGS: New file. 2011-01-11 00:06:01 +01:00
ChangeLog-2015 Autogenerate ChangeLog from git changelog. 2015-01-24 17:29:50 +01:00
config.h.in Remove libgcc dependency. 2015-03-03 20:50:37 +01:00
configure.ac configure: fix macports flex version detection 2015-11-27 19:42:23 +03:00
COPYING 2007-07-22 Yoshinori K. Okuji <okuji@enbug.org> 2007-07-21 23:32:33 +00:00
coreboot.cfg * coreboot.cfg: Add missing file. 2013-11-20 00:52:23 +01:00
geninit.sh automake commit without merge history 2010-05-06 11:34:04 +05:30
gentpl.py Add transform_data as a variant of data with substitutions. 2015-07-27 12:39:41 +02:00
INSTALL autogen.sh: Allow overriding the python to be used by setting $PYTHON. 2015-03-06 00:34:18 +01:00
linguas.sh linguas.sh: fix error when removing non-existing autogenerated files 2015-08-09 16:28:12 +03:00
Makefile.am tests: remove hardcoded paths from syslinux_test 2015-02-16 22:24:05 +03:00
Makefile.util.def gpt: add search by disk uuid command 2015-08-31 16:20:37 -07:00
NEWS NEWS: more additions 2015-12-15 10:43:12 +03:00
README README: Remove dead link to the wiki 2015-11-06 04:31:23 +01:00
THANKS 2009-12-11 Robert Millan <rmh.grub@aybabtu.com> 2009-12-11 22:44:47 +00:00
TODO 2008-01-07 Robert Millan <rmh@aybabtu.com> 2008-01-07 19:21:34 +00:00

README 

This is GRUB 2, the second version of the GRand Unified Bootloader.
GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more
robust, more powerful, and more portable.

See the file NEWS for a description of recent changes to GRUB 2.

See the file INSTALL for instructions on how to build and install the
GRUB 2 data and program files.

Please visit the official web page of GRUB 2, for more information.
The URL is <http://www.gnu.org/software/grub/grub.html>.

More extensive documentation is available in the Info manual,
accessible using 'info grub' after building and installing GRUB 2.

There are a number of important user-visible differences from the
first version of GRUB, now known as GRUB Legacy. For a summary, please
see:

  info grub Introduction 'Changes from GRUB Legacy'