Chroot /mnt /bin/bash Exec Format Error
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#1 2015-03-13 22:14:10 stevepa Member From: Texas USA Registered: 2012-02-12 Posts: 113 [resolved]chroot: failed to run command '/bin/bash': Exec format error Problem: I am getting an error: chroot: failed to run command chroot failed to run command /bin/bash' exec format error gentoo ‘/bin/bash’: Exec format error while attempting to follow wiki topic "Remastering the chroot failed to run command /bin/sh no such file or directory Install ISO"My environment is i686 packages on fully updated Arch Linux install.My arch iso is from here http://mirrors.gigenet.com/archlinux/is … chroot into different architecture 1-dual.isoThe context of the error is precisely as follows, at the end:# mkdir /mnt/archiso # mount -t iso9660 -o loop /home/steve/Downloads/archlinux-2015.03.01-dual.iso /mnt/archiso mount: /dev/loop0 is write-protected, mounting read-only $ cd ~
Chroot Failed To Run Command Mount Exec Format Error
$ mkdir customiso $ cp -a /mnt/archiso/ ./customiso $ cd customiso/archiso/arch/x86_64/ $ unsquashfs airootfs.sfs Parallel unsquashfs: Using 2 processors 1 inodes (262144 blocks) to write [=============================================================================================|] 262144/262144 100% created 1 files created 1 directories created 0 symlinks created 0 devices created 0 fifos # cd /home/steve/customiso/archiso/arch/x86_64/ # mount -o loop squashfs-root/airootfs.img mnt # mount -o loop squashfs-root/airootfs.img mnt # arch-chroot mnt /bin/bash sudo chroot /mnt failed chroot: failed to run command ‘/bin/bash’: Exec format errorFYI, I have read this info https://wiki.archlinux.org/index.php/Ch … rch-chrootPlus, I use chroot on every install without this trouble. Does this error have anything to do with setarch? Here is what I tried:setarch i686 arch-chroot mnt /bin/bash chroot: failed to run command ‘/bin/bash’: Exec format error # setarch x86_64 arch-chroot mnt /bin/bash setarch: x86_64: Unrecognized architectureI verified bash is at /bin/bashThe wiki article directories appear to vary slightly from the downloaded iso, but I adjusted to them, I hope, correctly. Is it even possible to follow the wiki section "Modifying the X86_64 system" on a i686 install? I hope I have not overlooked something simple.Any pointers or tips appreciated as always.Steve. Last edited by stevepa (2015-03-15 01:31:20) Arch - LVM - ext4 - gnome (T60p 14.1 1400p x86_64), (T60 15 flexview 1400p i686) Offline #2 2015-03-13 22:19:51 graysky Member From: The worse toilet in Scotland Registered: 2008-12-01 Posts: 8,657 Website Re: [resolved]chroot: failed to run command '/bin/bash': Exec format error I believe you need to boot into an i686 install to chroot into an i686 system.
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Cannot Execute Exec Format Error In Linux
Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top How can I chroot into a filesystem https://bbs.archlinux.org/viewtopic.php?id=194795 with a different architechture? up vote 24 down vote favorite 9 I'm trying to chroot into a Arch Linux ARM filesystem from x86_64. I've seen that it's possible to do using static qemu by copying the binary into the chroot system: $ cp /usr/bin/qemu-arm archarm-chroot/usr/bin But despite this I always get the following error: chroot: failed to run command ‘/bin/bash’: Exec format error I know this means that the architectures differ. Am I doing something wrong? chroot qemu arch-arm http://unix.stackexchange.com/questions/41889/how-can-i-chroot-into-a-filesystem-with-a-different-architechture share|improve this question edited Mar 11 '15 at 20:46 jasonwryan 34.8k983133 asked Jun 28 '12 at 22:33 Jivings 4151311 1 You have to configure binfmt first, have a look at wiki.debian.org/QemuUserEmulation for a quiet short introduction. An example for configuring binfmt_misc can be found at svn.kju-app.org/trunk/qemu/qemu/qemu-binfmt-conf.sh –Ulrich Dangel Jun 28 '12 at 23:00 Qemu static packages don't appear to be in the Arch repositories. –Jivings Jun 28 '12 at 23:04 1 Sorry i don't use arch, but you should probably be able to build a static qemu package by adding -static to the linker options –Ulrich Dangel Jun 28 '12 at 23:07 add a comment| 6 Answers 6 active oldest votes up vote 11 down vote accepted You cannot chroot into different architecture. By chrooting, you are executing the binaries (from the chroot) on your architecture. Executing ARM binaries on x86 (and x86_64 in that matter) would lead to "Exec format error". If you want to run binaries from different architecture you will need an Emulator. Qemu is a good candidate for this, but you will need to learn how to use it. This would involve creating RootFS and compiling a kernel for ARM. You will need a toolchain for compiling ARM binaries (and kernel) perhaps. One thing is for sure: Forget the chroot method, you cannot run binaries compiled for ARM on x86 (x86_64). Edit: After the small talk with @UrichDange
systemHardwareSoftwareDesktopServer & SecurityProject & Community Tools What links hereRelated changesSpecial pagesPrintable versionPermanent linkPage information User https://wiki.gentoo.org/wiki/Knowledge_Base:Chrooting_returns_exec_format_error Create accountLog in Toggle navigation Knowledge BaseDiscussion View source https://ubuntuforums.org/showthread.php?t=2299811 more History Knowledge Base:Chrooting returns exec format error From Gentoo Wiki Jump to: navigation, search Contents 1 Synopsis 2 Environment 3 Analysis 4 Resolution Synopsis During the installation of Gentoo Linux, attempting to chroot into the new exec format environment breaks with the following error: root #chroot /mnt/gentoo /bin/bash chroot: failed to run command `/bin/bash': Exec format error Environment This article applies to Gentoo Linux installations on an x86_64 platform (AMD64 architecture). Analysis The error Exec format error means that the binary being executed exec format error is made for a different architecture than the environment currently booted. It usually occurs when the system has been booted on a 32-bit system when a 64-bit environment is trying to load. Resolution Reboot the live environment and choose the correct architecture (most LiveCDs support a 64-bit kernel as well as a 32-bit option, although it is not booted by default). Look for entries labeled gentoo64 or linux64 if trying to boot a 64-bit system. Retrieved from "http://wiki.gentoo.org/index.php?title=Knowledge_Base:Chrooting_returns_exec_format_error&oldid=278384" Category: Knowledge Base This page was last modified on 3 March 2015, at 19:44. Privacy policy About Gentoo Wiki Disclaimers © 2001–2016 Gentoo Foundation, Inc. Gentoo is a trademark of the Gentoo Foundation, Inc. The contents of this document, unless otherwise expressly stated, are licensed under the CC-BY-SA-3.0 license. The Gentoo Name and Logo Usage Guidelines apply.
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