Grub Error 21 On
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Grub Loading Error 21
Software This forum is for Software issues. Having a problem installing a new program? Want to know which application grub loading error unknown filesystem is best for the job? Post your question in this forum. Notices Welcome to LinuxQuestions.org, a friendly and active Linux Community. You are currently viewing LQ as a guest. By joining grub error 21 windows 7 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. 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 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. Page 1 of 2 1 2 > Search this Thread 08-30
Get Kubuntu Get Xubuntu Get Lubuntu Get UbuntuStudio Get Mythbuntu Get Edubuntu Get Ubuntu-GNOME Get UbuntuKylin Ubuntu Code of Conduct Ubuntu Wiki Community Wiki Other Support Launchpad Answers Ubuntu IRC Support AskUbuntu Official Documentation User Documentation Social Media Facebook Twitter Useful Links Distrowatch Bugs: Ubuntu PPAs: Ubuntu Web Upd8: Ubuntu OMG! Ubuntu Ubuntu Insights Planet Ubuntu Activity Page Please read before SSO login Advanced Search Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Installation & Upgrades [SOLVED] cant set grub root Error 21 Having an Issue With Posting ? Do http://www.linuxquestions.org/questions/linux-software-2/what-is-grub-loading-error-21-and-how-can-i-fix-the-problem-224475/ you want to help us debug the posting issues ? < is the place to report it, thanks ! Results 1 to 4 of 4 Thread: cant set grub root Error 21 Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode December 16th, 2009 #1 madmaze View Profile View Forum Posts Private Message https://ubuntuforums.org/showthread.php?t=1356549 5 Cups of Ubuntu Join Date Sep 2007 Location Boston, MA Beans 19 DistroUbuntu 11.04 Natty Narwhal cant set grub root Error 21 Hello everyone, Here is my dilemma: I used to have centOS on my machine taking up half the hdd, the other half with Ubuntu 9.04. so my partitions were setup like so: /dev/sda1 465gb primary part. -centOS /dev/sda4 465gb extended part. /dev/sda5 -ubuntu root /dev/sda6 -swap /dev/sda7 -ubuntu home dir now I had the brilliant idea to get more space on my HDD so I formatted /dev/sda1 and that was where i think grub was. Now ive had my fair share of grub problems in the past and most of them just consisted of me booting from a live disk, then >grub >root (hd0,0) then >setup hd0 and that was it. now for some reason everything ive tried resulted in "Error 21: Selected disk does not exist". Ive tried root (hd0-4,0-5) and same error everytime. any suggestions? is it possible it doesnt like that my ubuntu is on an extended partition? Adv Reply December 16th, 2009 #2 phillw View Profile View Forum Posts Private Message Vi
Today's Posts Advanced Search Find the answer to your Linux question: Entire Site Articles Downloads Forums Linux Hosting Forum Your Distro Red Hat / Fedora Linux [SOLVED] GRUB Error 21 If this is your first visit, be sure to check out the FAQ by clicking http://www.linuxforums.org/forum/red-hat-fedora-linux/162056-solved-grub-error-21-a.html the link above. You may have to register before you can post: click the register link https://www.novell.com/support/kb/doc.php?id=7014290 above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. ** If you are logged in, most ads will not be displayed. ** Linuxforums now supports the Tapatalk app for your mobile device. Page 1 of 2 1 2 Last Jump to page: Results 1 to 10 of 13 Thread: [SOLVED] GRUB Error 21 Thread Tools Show error 21 Printable Version Email this Page… Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Enjoy an ad free experience by logging in. Not a member yet? Register. 03-27-2010 #1 KPolulak View Profile View Forum Posts View Articles Just Joined! Join Date Feb 2009 Posts 42 [SOLVED] GRUB Error 21 Here's the problem: My laptop is running Fedora 12. I installed BackTrack 4 onto an external USB hard drive using a LiveCD. Now when I boot my laptop grub error 21 (external HDD removed), I get this: Code: GRUB Loading stage1.5. GRUB loading, please wait... Error 21 I don't get this. I never touched anything with my internal drive. Well, maybe. When I was reviewing what partitions the installer was going to format, the swap partition for my internal drive (Fedora) was set to be formatted even though I did not specify this. I figured that wouldn't cause any problems. Also, Fedora never used to show GRUB loading at all. Screen was blank until Fedora starting loading. Maybe this means that this is a copy of GRUB from my BackTrack disc? Also, I ran 'fdisk' to look for anything suspicious and under /dev/sda1 (internal drive, boot partition) it says "Partition 1 does not end on cylinder boundary." Please, please help. I have a half-completed research paper on this drive and LOTS of homework and about 70 O'Rielly books. 03-27-2010 #2 devils casper View Profile View Forum Posts Private Message View Articles Super Moderator Join Date Jun 2006 Location Chandigarh, India Posts 24,776 Installer of Backtrack has installed its GRUB in MBR of Internal disk. When you unplug External disk, GRUB couldn't locate its conf files and throws error. Fedora's GRUB Menu is hidden by default and thats why it doesn't appear at startup. You can remove hiddenmenu option in grub.conf file to make it appear. You have to re-install Fedora's GRUB now. Boot up in Rescue Mode using from Fedora Installation CD/DVD and execute this at Shell Pr
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 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 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 on / type ext3 (rw,acl,user_xattr)In looking at the /dev/disk/by-id directory, the following is seen:l