Create EFI System Partition on USB image during build.

Create EFI System Partition on USB image during build.

The EFI System Partition is a special disk partition where EFI BIOS expects
to find the platform-specific bootloader. We need this in order to work on
the BIOS/kernel handoff. It's not needed for the final ChromeOS image and it
isn't useful for legacy BIOS systems, so right now it only makes any difference on x86
devices with development BIOSes.

This change creates the partition for ARM builds as well; it has no effect
there, either.

[Randall Spangler, 2010-04-06 19:56:02]

LGTM

http://codereview.chromium.org/1513019/diff/1/2
File src/platform/installer/chromeos-common.sh (right):

http://codereview.chromium.org/1513019/diff/1/2#newcode266
src/platform/installer/chromeos-common.sh:266: # and the ESP partition
and --> add

http://codereview.chromium.org/1513019/diff/1/5
File src/scripts/build_image (right):

http://codereview.chromium.org/1513019/diff/1/5#newcode341
src/scripts/build_image:341: # NOTE: The size are for mkfs.vfat is in 1024-byte
blocks. We'll hard-code it
are for --> for

[sosa, 2010-04-06 20:01:21]

LGTM

http://codereview.chromium.org/1513019/diff/1/5
File src/scripts/build_image (right):

http://codereview.chromium.org/1513019/diff/1/5#newcode337
src/scripts/build_image:337: # Create EFI System Partition to boot stock EFI
BIOS (but not ChromeOS EFI
space Chrome OS

[adlr, 2010-04-06 20:03:00]

can you update image_to_vmware.sh also? And grep to see if anything else is
calling install_gpt

[adlr, 2010-04-06 21:52:17]

LGTM