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Bug 1512493 - grub2-mkimage on fresh UEFI installation fails: cannot open `/usr/lib/grub/x86_64-efi/moddep.lst [NEEDINFO]
grub2-mkimage on fresh UEFI installation fails: cannot open `/usr/lib/grub/x8...
Status: NEW
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: grub2 (Show other bugs)
7.4
x86_64 Linux
high Severity high
: rc
: ---
Assigned To: Peter Jones
Release Test Team
Petr Bokoc
: Reopened
Depends On:
Blocks: 1594286 1492177
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Reported: 2017-11-13 06:04 EST by Pavel Cahyna
Modified: 2018-10-23 06:12 EDT (History)
3 users (show)

See Also:
Fixed In Version:
Doc Type: Known Issue
Doc Text:
The "grub2-mkimage" command fails on UEFI systems by default The "grub2-mkimage" command may fail on UEFI systems with the following error message: error: cannot open `/usr/lib/grub/x86_64-efi/moddep.lst': No such file or directory. This error is caused by a the package _grub2-efi-x64-modules_ package missing from the system. The package is missing due to a known issue where it is not part of the default installation, and it is not marked as a dependency for _grub2-tools_ which provides the "grub2-mkimage" command. The error also causes some other tools which depend on it, such as *ReaR*, to fail. To work around this problem, install the _grub2-efi-x64-modules_, either manually using *Yum*, or by adding it to the Kickstart file used for installing the system.
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Last Closed: 2018-03-21 15:46:39 EDT
Type: Bug
Regression: ---
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RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
pcahyna: needinfo? (cww)

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Description Pavel Cahyna 2017-11-13 06:04:34 EST 
Description of problem:
On a freshly installed RHEL 7.4 system with UEFI, grub2-mkimage fails to produce an image, with the error message grub2-mkimage: error: cannot open `/usr/lib/grub/x86_64-efi/moddep.lst': No such file or directory.

This file is provided by the grub2-efi-x64-modules package, but this package is not installed by default. If the system is installed directly via uefi, it installs the grub2-pc-modules package instead of the grub2-efi-x64-modules package. Interestingly, grub2-pc does depend on grub2-pc-modules, but grub2-efi does not depend on grub2-efi-modules, nor does grub2-efi-x64 depend on grub2-efi-x64-modules. Why this asymmetry?

This problem prevents ReaR from working out-of-the-box on UEFI systems, see bz1492177

Version-Release number of selected component (if applicable):
grub2-efi-x64-2.02-0.65.el7_4.2.x86_64

How reproducible:
Reproducible on newly installed systems, on systems upgraded from previous releases the grub2-efi-x64-modules package is sometimes present and the command does work, see https://bugzilla.redhat.com/show_bug.cgi?id=1492177#c3

Steps to Reproduce:
1. grub2-mkimage  -O x86_64-efi -p /EFI/BOOT

Actual results:
grub2-mkimage: error: cannot open `/usr/lib/grub/x86_64-efi/moddep.lst': No such file or directory.

Expected results:
Image is produced on stdout, just like in the case of "grub2-mkimage  -O i386-pc -p /boot/grub2" (which works even on an UEFI system, btw).
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