Grub Error 21 Linux
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Grub Error 21 Selected Disk Does Not Exist
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Grub Error 21 Windows 7
Linux Support [SOLVED] How to fix GRUB Error 21 User Name Remember Me? Password Site Map Posting Help Register Rules Today's Posts Search Site Map Home Forum Rules Members List Contact Us Community Links Pictures & Albums Members List Search Forums Show Threads Show Posts Tag Search Advanced Search Search Site / Google View Posts New Posts Your Posts Go to Page... [SOLVED] How to fix GRUB Error 21 This is a discussion on [SOLVED] How to fix GRUB Error 21 within the Linux Support forums, part of the Tech Support Forum category. Hello all! I had installed Ubuntu 8.10 on my External Drive, on a partition, so I would not risk messing Thread Tools Search this Thread 12-22-2008, 01:49 PM #1 Blue445 Registered Member Join Date: Dec 2008 Posts: 181 OS: Linux Mint Hello all! I had installed Ubuntu 8.10 on my External Drive, on a partition, so I would not risk messing up my Windows Installation, and to keep my comptuer booting windows all the time when my External was not plugged in. As I can see now, it is not the case. My PC requires that I have my external drive plugged in, before it gives me a choice of operating Systems. When it is not
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 http://www.techsupportforum.com/forums/f64/solved-how-to-fix-grub-error-21-a-326625.html 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 http://www.pendrivelinux.com/grub-error-21-after-full-install-to-usb-hard-drive/ 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
Help » General » (SOLVED) Got "Error 21" message when in GRUB « previous next » Print Pages: [1] 2 3 4 5 Go Down Author Topic: (SOLVED) Got "Error 21" message when http://www.pclinuxos.com/forum/index.php?topic=108824.0 in GRUB (Read 12995 times) batzilla Full Member Posts: 104 (SOLVED) Got "Error 21" message when in GRUB « on: September 04, 2012, 01:56:57 PM » I was on my computer, minding my own business, and the tool bar at the bottom of the page went away and I was stuck. So I manually shut down my computer and on booting again, got a black screen with this message:GRUB Loading stage1.5.GRUB Loading, error 21 please wait. . . .Error 21Can somebody rescue me!? I'm running PCLinuxOS 2009 release 2.6.26.8.tex3 with KDE 3.5.10 on a Dell Dimension 4500.Batzilla « Last Edit: September 13, 2012, 08:34:16 PM by batzilla » Logged BatzillaDell Dimension 4500PCLinuxOS 2012.08-KDERelease 3.2.18-pclos2.bfsKDE 4.8.3 i14 PCLinuxOS Tester Super Villain Posts: 23815 MLUs Forever! Re: Got "Error 21" message when in GRUB « Reply #1 on: September 04, 2012, 02:32:13 PM » Quote21 : Selected disk does grub error 21 not exist This error is returned if the device part of a device- or full file name refers to a disk or BIOS device that is not present or not recognized by the BIOS in the system.From info:/grub/Stage2 errors ..... you can use Konqueror to see all the error messages by entering that in the location bar.I would suggest checking the cables .... power and data going to the disk ..... pull them and reseat them with the power unplugged.Then try to boot again. Logged "Posterity - a paultry form of eternity" L. CohenKernel: 4.8.1-pclos1 x86_64 (64 bit); Desktop: KDE 4.14.18; Mobo: ASUSTeK P8Z68-V PRO v: Rev 1.0.1; CPU: Quad core Intel Core i7-3770S (-MCP-) cache: 8 MB; Memory: 8 GB; CPU Speed max: 3900 MHz; Graphics Card: Intel Xeon E3-1200 v2/3rd; SONY DVD RW T6 Guest Re: Got "Error 21" message when in GRUB « Reply #2 on: September 04, 2012, 02:36:39 PM » you are using a really old version of pclinux! any reason to do that?error 21, wasn't that error related to the hard disk partitions? backup your important files just in case that partition or hard disk are failingsupposedly you can fix this error by running the redombr tool to recreate the mbr file or