Grub Error 21 Eee
#1 2012-04-14 17:27:41 wLee Member From: Amsterdam, NL Registered: 2008-12-06 Posts: 33 [SOLVED] Fresh install won't boot - error 21 and number of root device I think I was not very clear in my explanation of the problem and didn't provide enough information, so I edited y original post fro yesterday. Hopefully someone sees my mistake and can tell me what I can do to get it right.The problem is my pc with a fresh install does not boot, not the base kernel and not the fallback image.My pc is an Asus Eee pc 900A and the Arch iso is downloaded last fridaynight and dd if= on a usb memorystick.Basically it gives two errors, the first is at first boot after install:Error 1:Booting 'Arch Linux' root (hd1,1) Error 21: Selected disk does not existThe second error appears if root changed to (hd0,0), wich I tried because grub> find /boot/grub/stage1 answers (hd0,0).Error 2::: Loading Initramfs :: Starting udevd... done. Waiting 10 seconds for device /dev/sdb1 ... Root device '/dev/sdb1/ doesn't exist. Attempting to create it. ERROR: Unable to determine major/minor number of root device '/dev/sdb1/'. You are being dropped to a recovery shellAfter reading every topic I could find concerning this I tried the following:- Ad 'quiet' to the kernel line in the menu.lst = Did not boot.- Ad rootfstype=ext2 to the kernel line in the menu.lst = Did not boot.- Labeled the drives in fstab and menu.lst to workaround possible partition switches = Did not boot. - Removed 'autodetect' from /etc/mkinitcpio = Did not work.- Mount, chroot, pacman -Syu or -S udev or -S mkinitcpio or whatever gives the following error: failed to commit transaction (conflicting files) util-linux: /bin/mountpoint exists in filesystem util-linux: /usr/share/man/man1/mountpoint.1.gz exists in filesystem filesystem: /etc/mtab exists in filesystem errors occured, no packages were upgraded.- Pacman -S filesystem --force replies:error: could not determine filesysem
Favorite Rating: Error 21 in grub during the upgrade to newer SLES 11 (SPx)This document (7014290) is provided subject to the disclaimer at the end of this document. Environment SUSE Linux Enterprise Server 11 Service Pack 3SUSE Linux Enterprise Server 11 Service Pack 2SUSE Linux Enterprise Server 11 Service Pack 1SUSE Linux Enterprise Server 11 Situation Server was converted from running as a "physical server" to running as a "virtual machine" running on VMware infrastructure. The conversion was made by using VMware vCenter Converter.SymptomsDuring the upgrade https://bbs.archlinux.org/viewtopic.php?id=139628 process from a previous OS version (i.e. SLES 10 SP4, or older SLES 11 SP) to a newer version of SLES 11, an error is encountered when the grub bootloader is installed. The relevant text of the error is similar to:grub> install --stage2=/boot/grub/stage2 (hd0,0)/boot/grub/stage1 d (hd0) (hd0,0)/boot/grub/stage2 0x8000 (hd0,0)/boot/grub/menu.lstError 21: Selected disk does not existgrub> quitIf using a graphical install, you may see https://www.novell.com/support/kb/doc.php?id=7014290 the following: Resolution Revert the VM back to the snapshot before applying the update/installation.Modify the /boot/grub/device.map to point to the proper disk/partition. Ideally, you will want to use either:/dev/disk/by-idor/dev/disk/by-uuidReboot and run the upgrade again. Cause After conversion to a virtual machine, the /boot/grub/device.map file no longer points to a proper device. Additional Information When the server is on physical hardware, the /boot/grub/device.map file may incorporate the driver name in the device. In our example it read like:(hd0) /dev/disk/by-id/cciss-xxxxxxxxxxxxxxxxxxxx(hd1) /dev/disk/by-id/cciss-xxxxxxxxxxxxxxxxxxxxAfter being converted to a virtual server, the old name will only work as long as grub isn't modified -- which occurs when upgrading to a new OS version or service pack. Therefore, in order to avoid this error, use the appropriate entry in /dev for your device. Try to avoid using disk names, like cciss devices, and use the links to your disks under /dev/disk/by-id or /dev/disk/by-uuid -- pointing to devices similar to /dev/sda, /dev/sdb... in most of configurations).############################################################################Here is an example. Before upgrading my machine, I see that /boot/grub/device.map shows:(hd0) /dev/disk/by-id/cciss-3600508b1001039565a353152494a0000(fd0) /dev/fd0and that my /boot is on partition /dev/sda1 (as it is part of the '/' partition):/dev/sda1 o
Search Tutorials/Articles Search HCL Search Reviews Search ISOs Go to Page... LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie Error 21: Selected disk does not exist User Name Remember Me? Password Linux - Newbie This Linux forum is for members that http://www.linuxquestions.org/questions/linux-newbie-8/error-21-selected-disk-does-not-exist-699406/ are new to Linux. Just starting out and have a question? If it is not in the man pages or the how-to's this is the place! Notices Welcome to LinuxQuestions.org, a friendly and active Linux Community. You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. grub error Join our community today! Note that registered members see fewer ads, and ContentLink is completely disabled once you log in. Are you new to LinuxQuestions.org? Visit the following links: Site Howto | Site FAQ | Sitemap | Register Now If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here. Having a problem logging in? Please visit this page to clear all LQ-related cookies. Introduction to grub error 21 Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter. For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own. Click Here to receive this Complete Guide absolutely free. Search this Thread 01-23-2009, 12:29 PM #1 prytanis LQ Newbie Registered: Jan 2009 Location: Athens Posts: 4 Rep: Error 21: Selected disk does not exist Hello, im new to your community and i wanted to post a problem i am receiving after numerous installs on the same pc every time. I own an asus eee pc900 and i wanted to install ubuntu eee 8.04.1 on it. I did it correctly all the way until after installation finished the last restart was required. I pressed restart now and then there was nothing than the blank black screen and the leds of power and wireless lit. After about one and a half hou