Grub Loader Error 21
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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] http://www.linuxforums.org/forum/red-hat-fedora-linux/162056-solved-grub-error-21-a.html GRUB Error 21 If this is your first visit, be sure to check http://www.pendrivelinux.com/grub-error-21-after-full-install-to-usb-hard-drive/ out the FAQ by clicking the link above. You may have to register before you can post: click the register link 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. error 21 ** 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 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 grub loader error 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 (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 homewo
install to an external USB hard drive. This person already had Debian Linux installed on their local hard drive and was attempting to do an install of Ubuntu to an external USB hard drive. During the Ubuntu USB hard drive installation process, Grub was accidently moved from the internal hard drive to their external hard drive, rendering the original Linux system unbootable without the external drive plugged in. When attempting to boot from the original Debian Linux system, they would encounter the Grub Error 21 shortly after the Grub 1.5 boot process. The good news is that the fix to repair Grub on the original system was quite simple and is illustrated below: Reinstalling or fixing Grub after error 21: Boot into the original Linux system with the external hard drive still installed (or you can boot from a Live Ubuntu CD). Open up a terminal and type sudo su Type fdisk -l and locate your Linux boot partition from the list Example: sda1 or hda1 Type grub-install /dev/sdx or grub-install /dev/hdx to reinstall or repair Grub! Reboot and test! Notes: x represents the drive letter a, b, c, d etc. Replace with your actual drive letter. sdx= SATA, SCSI or USB devices hdx= IDE devices Similar Portable Linux Posts:Pendrivelinux V1 install to a portable USB hard driveInstalling Ubuntu 7.04 to a USB Hard DriveCoLinux Portable Ubuntu for Windows Grub Error 21 after full install to USB hard drive published under Using and Configuring Linux debian linux system, error 21, external hard drive, external usb hard drive, fixing grub, grub, grub install, usb hard drive, USB Ubuntu Portable Linux Categories Flash drive installs using Live CD Flash drive installs using Windows USB Virtual Machine Emulation Using and Configuring Linux Pendrive Linux Posts Make a USB Boot CD for Ubuntu 11.10 Boot DOS from USB - RUFUS LiveUSB Install - Live USB Creator XBOOT - Multiboot ISO USB Creator (Windows) YUMI - Multiboot USB Creator SARDU - Multiboot USB Creator (Windows) Boot Multiple ISO from USB via Grub2 using Linux Creating a Kubuntu Live USB from CD Creating an Xubuntu Live USB from CD Creating an Ubuntu Live USB from CD Using UNetbootin to create a Linux USB from Linux MultiSystem - Create a MultiBoot USB from Linux Put Mandriva 2010 on a USB Flash Drive (Windows) Put Bitdefender Rescue CD on a USB Flash Drive Put Lucid Puppy on USB Flash Drive from Windows USB Linux Help USB Boot compatibility test USB Help and Tools Boot Cheatcod