A Grub Error
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it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Grub rescue - error: unknown filesystem up vote 40 down vote favorite 16 I have a multiboot system set
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up. The system has three drives. Multiboot is configured with Windows XP, Windows 7, and Ubuntu - all on the first drive. I had a lot of unpartitioned space left on the drive and was reserving it for adding other OSes and for storing files there in the future. One day I went ahead and downloaded Partition Wizard and created a logical NTFS partition from within Windows 7, still some unpartitioned space left over. Everything worked fine, until I rebooted the grub rescue computer a few days later. Now I'm getting: error: unknown filesystem. grub rescue> First of all I was surprised not to find any kind of help command, by trying: help, ?, man, --help, -h, bash, cmd, etc. Now I'm stuck with non-bootable system. I have started researching the issue and finding that people usually recommend to boot to a Live CD and fix the issue from there. Is there a way to fix this issue from within grub rescue without the need for Live CD? UPDATE By following the steps from persist commands typed to grub rescue, I was able to boot to initramfs prompt. But not anywhere further than that. So far from reading the manual on grub rescue, I was able to see my drives and partitions using ls command. For the first hard drive I see the following: (hd0) (hd0,msdos6) (hd0,msdos5) (hd0,msdos2) (hd0,msdos1) I now know that (hd0,msdos6) contains Linux on it, since ls (hd0,msdos6)/ lists directories. Others will give "error: unknown filesystem." UPDATE 2 After the following commands I am now getting to the boot menu and can boot into Windows 7 and Ubuntu, but upon reboot I have to repeat these steps. ls ls (hd0,msdos6)/ set root=(hd0,msdos6) ls / set prefix=(hd0,msdos6)/boot/grub insmod /boot/grub/linux.mod normal UPDATE 3 Thanks Shashank Singh, with your instructions I have simplified my steps to the following. I have learned from you that I can replace msdos6 with just a 6 an
unknown file system error?UpdateCancelPromoted by Udacity.comLearn to configure your own Linux-based servers.Master full stack web development in a course created by Google, GitHub, & AWS. Job offer guaranteed.Learn More at Udacity.comAnswer Wiki10 Answers Amit Kumar Padal,
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Almost Chartered AccountantUpdated 11w agoI faced the same problem a week back when my sister grub error 2 got a HP laptop which came with Windows 8.1 & Ubuntu preloaded. The Windows was partitioned with 320 GB of unpartioned drive and grub hard disk error the rest was allocated for Ubuntu. All I did was partioning my hard-disk in Windows. Then once I restarted my laptop it said "unknown filesystem" "Grub Rescue" & I couldn’t get any further.After struggling for hours I http://askubuntu.com/questions/119597/grub-rescue-error-unknown-filesystem could fix the boot-loader problem. Here is what I did:-Stop panicking, you didn’t loose your data.-Switch on the laptop, wait till you get the Grub Rescue Screen.-Type the following commandslsIt will show you a list of partions you have made.You will get something like this (hd0),(hd0,msdos1)(hd0,msdos2)(hd0,msdos4)You need to find which drive is your Ubuntu root for which type the following:set prefix= (hd0,msdos1)/boot/grubIf it’s not the root drive you will get an error message "unknown filesystem". In https://www.quora.com/How-do-I-fix-a-grub-rescue-unknown-file-system-error that case try the same command with the next partion, ex: set prefix=(hd0,msdos2)/boot/grubIf you are not getting an error: Congrats, you have found your root drive. You can proceed to the next command after that:set prefix=(hd0,msdos1)/boot/grubinsmod normalnormalYour PC will now boot successfully. Now select Ubuntu & login.Open Terminal( Ctr+Alt+T or use the search)sudo update-grubsudo grub-install /dev/sdaNow the bootloader error is fixed you should be able to boot your laptop normally & even your data is intact.If sudo update-grub didn't work, type sudo grub-update50k Views · View UpvotesRelated QuestionsMore Answers BelowHow do I fix unknown file system grub error?In my HP 246 laptop I've deleted the Linux partion, and after restarting, it shows Grub rescue error, what should I do next to fix the bug?Why does GRUB rescue appear when uninstalling Ubuntu?How do I boot a system after grub rescue error, unfortunately unknown filesystem says when I run ls (hd0,msdos5) /boot in all the partition?After upgrading my Windows installation I'm facing the GRUB rescue command. How can I move ahead? Chandrashekar Babu, A Linux enthusiast since 1995.Written 28w agoI did not personally face this issue yet to be an expert at solving it. However, a quick search on the internet and I found this issue discussed in various other forums with solutions. One link that I found was a similar query at AskUbuntu - Fixin
-Grub rescue: unknown filesystem- Error pad2G SubscribeSubscribedUnsubscribe351351 Loading... Loading... Working... Add to Want to watch this again later? Sign in to add https://www.youtube.com/watch?v=jc_y7OYzXtQ this video to a playlist. Sign in Share More Report Need to report the video? Sign in to report inappropriate content. Sign in 278,186 views 483 Like this video? Sign in to make your opinion count. Sign in 484 125 Don't like this video? Sign in to make your opinion count. Sign in grub error 126 Loading... Loading... Loading... Rating is available when the video has been rented. This feature is not available right now. Please try again later. Published on Sep 19, 2013After that run: sudo grub-updatesudo grub-install /dev/sda and you should be done Category Science & Technology License Standard YouTube License Music "Make Those Move grub error 2 (Instrumental)" by I Am Legion Listen ad-free with YouTube Red Show more Show less Loading... Advertisement Autoplay When autoplay is enabled, a suggested video will automatically play next. Up next Fix Error unknown filesystem Grub rescue mode - Duration: 2:35. Nuruddin Sayeed 7,723 views 2:35 Fix unknown filesystem Grub rescue Ubuntu, Windows - Duration: 2:30. Anh Tuấn Đường 99,008 views 2:30 How set up boot setting ERROR: UNKNOWN FILE SYSTEM, GRUB RESCUE (IN HINDI AUDIO) - Duration: 5:09. Amit Verma 40,785 views 5:09 Grub Rescue - Guide for beginners - Duration: 12:22. TechZone++ 228,245 views 12:22 How to fix grub rescue (solution work 100% ) - Duration: 4:29. FullFreeSoftware.Net 43,886 views 4:29 How to Restore Windows boot loader After Deleting Linux and Grub loader - Duration: 4:59. TechnoFusion 278,090 views 4:59 Resolve: Error no such partition - Duration: 3:37. Paolo Fattoruso 86,843 views 3:37 Como Recuperar tu Grub con SuperGrubDisk - Duration: 6:00. Mijael Blanco 32,