Ubuntu :: Invalid File System - Grub Rescue
Jan 1, 2011
I've (attempted) to create a quad-boot on my MacBook Pro (if the specs are needed, its- 8gbs RAM, core i7, 500GB hard drive @ 7200 rpms, and its running the latest update of snow leopard). I have installed rEFIt and had installed Windows 7 as well as ubuntu 10.10. Everything was working great until I tried loading Linux Mint 10. Linux Mint got rid of Ubuntu in the rEFIt boot menu. I thought the added Linux Mint partition had just pushed out Ubuntu, so I deleted the Linux Mint partition, and re-sized the Macintosh HD. Now whenever I try to boot Windows 7 or Ubuntu, I get something along the lines of "invalid file system: Grub rescue" What do I do?
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Jul 18, 2011
I have a pc that was running with the latest version of ubuntu and i wanted to install just vista for somereasons.
And what i did is to format the main driver and try to boot it from vista CD and as you may guess i have an error that says: unknown file system grub rescue
Each time i start the pc. I have an ubuntu live cd and also the vista cd, so what should i do now? the vista cd dosnt boot and the same screen appears all the time.
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Apr 15, 2011
I previously had Ubuntu installed on my MBR. I deleted that partition (32 GB), resized my Mac partition back up to (250 GB), and then reduced it to 200 GB and created a new one with 50 GB via BootCamp to install Windows 7 from a DVD that I burnt (I got a Windows executable from MSDNAA that I used with Wine to obtain the ISO image. Insert rant about having to download Windows with a Windows executable here.).
I've tried burning two different DVDs. I used Burn on my Mac to burn a data DVD+R with the HFS+ and Joliet filesystems (I think) and then tried again with the ISO9660 and UDF filesystems. The latter has not shown any signs of working besides mounting on OS X. The first DVD would not boot whenever I held 'C' down at time of boot. So I went into BootCamp and clicked "Start Installation". It restarted my computer and this is where the real confusion comes up. I think that it tried booting via the empty partition. The reason I say this is that there are remnants of GRUB and when I boot, I get a screen that says this: error: unknown filesystemrub rescue>
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Jul 18, 2011
Have win 7 on one drive and ubuntu on 2nd drive then son goes and deletes partition that Ubi was in ,now cannot access any system all i get is grub rescue on screen and i cannot boot with any thing taking a guess the grub bootloader has died and made a mess of the windows bootloader.
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Nov 30, 2010
I am reading spc456's thread with the same subject line and trying to work through the thread with suggestions by drs305.
My situation is very similar. It started with a sudden Windows boot problem (still my primary OS):
Quote:
This was only if I selected Windows from the boot menu. I thought I could cure it with the Windows-7 Repair Disk from neosmart.net. This appears to have wiped my Boot partition completely and now I can't boot anything. (I'm using the Ubuntu 10.10 live as I type this.)
I downloaded boot_info_script055.sh and here are the RESULTS but I don't know what needle to look for in that haystack.
Code:
Boot Info Summary:
Well, I see why the Windows boot didn't show up. Looks like 30-OS_prober was failing to find the Windows boot record, which makes sense if the whole blessed (ahem) boot partition has been hosed.
I tried to follow the grub-install instructions:
Code:
But since grub2 is obviously not going to find the Windows boot record, I will continue with drs305's.
Code:
No, I have not mounted /dev. Where would I do that? Against which FS?
In any case, I am now printing the article "How to restore the Ubuntu/XP/Vista/7 bootloader" to see if I can get that going.
To my dismay, I discovered that the disk supplied with my Dell machine is NOT a Windows Installation disk, so no straightforward "fixmbr" command will be possible at this time.
I'll let y'all know how I have fared with this. I am sceptical because it's not merely the master boot record that has gotten corrupted but the whole blessed (have I used that adjective already?) boot partition.
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May 12, 2011
I have been using various versions of Ubuntu for many years. I love it and I want to stay with it. Now I need help more than ever. So basicly I've searched through forums and other sites which seem to have had the same problem I am having.
However, I've tried all the "fixes" and nothing works at all at this point.
Here is what I have tried so far: [url] and every suggestion here: [url]
When I put in "sudo fdisk -l" I get this:
So after trying the suggestions in the above links I would restart and still get: "error: file not found. Grub rescue>"
I am trying to install it from a usb to an external hd. I installed Ubuntu 8.4 on the same hd before and it worked fine however I need one of the newer versions to use the programs I need. I've been at this for hours and maybe I am just missing something simple.
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Feb 18, 2012
My system doesn't boot anymore, when I turn on the laptop, instead of the normal grub screen, i get the following:
"error: file not found
Entering rescue mode...
grub rescue> _"
I tried also to make a bootable usb w/ unetbootin but all the distros failed to load w/ a syslinux boot error message so I really need to fix the existing debian installation to get access to my files i need for the university, it's debian stable (6.0.4) on hp mini 210 ....
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Feb 11, 2010
I am fresh to Ubuntu and am having trouble getting it to boot on my system. I normally run XP, but recently added a second internal hard drive and installed Ubuntu on it. The installation went fine and upon initial reboot I received -
GRUB loading. error: no such disk grub rescue>
I am wondering if there is an issue between two different operating systems upon boot. I am not familiar with GRUB commands.
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Feb 12, 2011
I have two partitions installed on my computer, Ubuntu 10.04 (part. sda2) and Windows XP (part. sda1). When I restart my computer I get this message:
error: file not found
grub rescue>
I thought this must be a grub error, so I booteda Super Grub disk (v 0.9799). Then I tried to fix grub with the Super Grub disk, but I got this message:
Error 15: File not found
Booting 'not lucky'
pause SGD has NOT succeeded
SGD has NOT succeeded
I then booted the system using an Ubuntu live CD, version 10.04.I tried to repair the sda2 Ubuntu partition. At a terminal prompt I ran [code] sudo e2fsck -f -y -v /dev/sda2. This did not work. It ended with "e2fsck aborted". I could not repair the Ubuntu partition,
I tried to open the sda2 partition by running the terminal command [code] sudo mount /dev/sda2 /mnt. I received the following message:
mount: wrong fs type, bad option, bad superblock on /dev/sda2
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
Using the ntfs-config program, I can easily mount the Windows XP partition (sda1). It mounts and I can read or write the files on the Windows XP partition. So at least Windows XP is not damaged. I downloaded and ran the boot info script, and here are the results:
Code:
Boot Info Script 0.55 dated February 15th, 2010
=> Grub 2 is installed in the MBR of /dev/sda and looks on the same drive in
partition #2 for /boot/grub .....
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Jul 4, 2011
I've setup raid to my primary partition by starting up from an USB. Array was up&working. Now starting up from my HDD's, I get: error: file not found. grub rescue> what should I do here?
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Jan 23, 2016
It happened when I updated my php5.4 to 5.5 version on my small Debian 7 server. I am only getting GRUB right after BIOS boot pass, then none of the keys working even C or Shift buttons to go to command promt except CTRL+ALT+DEL.
I have tried rescue mode with live CD, selected myserver/root/ partition to install GRUB but not worked.
How to recover my server, I have some important data in it and I don`t want to destroy them.
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Sep 5, 2011
When i boot my PC, i get this in my Fedora 16 distro. I have tried as following but none allowing me to boot anymore.
Grub loading.Welcome to GRUB!
error: file not found. Entering rescue mode...
grub rescue>
grub rescue> ls
(hd0) (hd0,gpt3) (hd0,gpt2) (hd0,gpt1)
grub rescue> ls (hd0,gpt2)/
./ ../ lost+found/ memtest86+-4.20 grub2/ System.map-3.1.0-0.rc3.git0.0.fc16.i686 config 3.1.0.0.rc3.git0.0.fc16.i686 grub/ vmlinuz-3.1.0.0.rc3.git0.0.fc16.i686 elf-memtest86+-4.20 initramfs-3.1.0.0.rc3.git0.0.fc16.i686.img initramfs-3.1.0.0.rc4.git0.0.fc16.i686.img System.mpa-3.1.0.0.rc3.git0.0.fc16.i686 config-3.1.0.0.rc3.git0.0.fc16.i686 vmlinuz-3.1.0.0.rc3.git0.0.fc16.i686
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Mar 7, 2011
Yesterday I installed the latest version of ubuntu to my computer that was already running windows 7. I had everything working fine until in windows I deleted a partition that had nothing in it.
After this I restarted but I can't get into either OS. I get an error that says Error: unknown filesystem grub rescue>
I think I need to fix something in grub. I have been booting off of a usb stick with linux on it in the mean time.
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Mar 7, 2011
Yesterday I installed the latest version of ubuntu to my computer that was already running windows 7. I had everything working fine until in windows I deleted a partition that had nothing in it. After this I restarted but I can't get into either OS.
I get an error that says Error: unknown filesystem grub rescue>
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May 13, 2011
Short story: upgraded to Natty, slowed graphics, re-installed Lucid, got Error: file not found and grub rescue prompt
Code:
Boot Info Script 0.55 dated February 15th, 2010
============================= Boot Info Summary: ==============================
[code]....
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Jul 20, 2010
I have a new installation. I try to boot and instead of my grub menu, I get "error: file not found" and am dropped into the rescue prompt. I have just a standard "Desktop" installation. I installed from the 5.05 net install cd. I installed grub to the MBR.
partitions are:
hd0,2 is /
hd0,5 is swap
entering the "set" command results in:
prefix=(hd0,2)/boot/grub
root=hd0,2
[Code]...
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Mar 12, 2010
Last night I was making a boot usb drive with usb startup creator onto a USB external well I, messed up and lost the partition table for 2 USB drives: my 500 gb hard drive was pluged in whilst i was doing this silly i know it was partitioned 251 gb its now showing as 500 gb but the data is still on drive it seems the file system is gone or damaged
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Dec 26, 2010
Have installed ubuntu on a separate partition on single hard disk and system initially worked on a dual boot basis with windows xp. However after installing most recent series of updates computer is failing to boot.
Error message is 'error : no such device : 6937cabe-f115-455b-a248-6f8d46f80682.' prompt showing is 'grub rescue>' am now unable to access either windows or ubuntu.
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Apr 10, 2011
when I got following some information using fdisk -l,there were some invalid information about system name.I installed file system reiserfs, xfs on sdb6, sdb7.but the system didn't recognizes disk's file system name.
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Oct 30, 2010
I had a problem with my grub (system displayed "unknown filesystem" and then the grub rescue prompt). I then used a livecd of ubuntu 9.04 and ran fsck for a while (closed it in the middle). Grub then worked. But when i select ubuntu 10.04 it goes to the purple screen and stops there. There's some error before loading the purple screen.
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May 21, 2011
Ubuntu 9.10 was set up to handle the booting selection - previously I thought it was xp but Ubuntu 9.10 "did" it. The system started out as a xp / ubuntu 9.10 dual boot on a 400gb drive. xp has 210gb, ub has 80 and their is a 100gb shared storage. Xp was installed first and then I followed a guide over at linuxconfig.org to get ub installed so that I could select which OS was wanted at boot. Ubuntu manages the boot up menu (Went back to look at my notes from the original setup) The owner tried to update to ub 11.04 and afterall was said and done the machine now boots to the message
error file not found grub rescue I can't say if 11.04 was properly installed or not. Ask whatever you like and I'll give the best answer I can. I think the xp install is okay but I can't say for certain as I don't know how to boot it outside the bootmanager at startup. Data has been saved so if I have to blow it all away and start over I can but I'm hoping I won't have to.
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Dec 16, 2010
I updated yesterday and now when I start my laptop it goes in to grub rescue mode. I have booted from a 'live cd' and thought I could repair grub from there. In gparted however the partition with ubuntu (sda1) is seen as unknown file system, in terminal when I list the partition table it shows up as FAT16 type. When I try a grub-install it gives this error message:
[Code]....
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Apr 11, 2010
First the hard data:
Upgraded from Ubuntu 9.04 to 9.10 via upgrade manager
System is AMD 64
Have dual boot with XP on seperate hard drive
[code]....
Then the wheelspin:
Seem to have knocked out GRUB as normal loading screen does not appear anymore.
Worse, I think I accidently installed grub to something labelled SDC5.
Cannot get anything except the "grub rescue" prompt. I'm not sure if using the LiveCD (9.10) can help. Have tried a few prompts from other threads but just ended up with mud splattered all over the place. I'm gathering I need to load grub, but can I do it using any grub rescue commands?
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Jan 31, 2010
Yesterday I partitioned my hard drive with kubuntu netbook remix and windows 7. after a few hours and reboots i turned on my computer and it said Grub loading. unknown filesystem rescue grub> It looks like allot of people have been having similar errors recently with windows 7.
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Jan 15, 2011
So I wanted to get rid of ubuntu 10.10 on my HP pavilion dv6 laptop as I wanted to make some hd space. Its a dual boot with windows 7. I deleted the ubuntu partition and expanded the windows partition to fill the whole hard drive again. When I restarted my laptop I got the "error: no such partition. Grub rescue>" message.
I tried inserting my ubuntu 10.10 boot cd but whenever I boot from the cd I get the exact same grub rescue error. Is it possible to remedy this situation from the error? I am currently unable to download a windows recovery cd so I'm stuck in the grub rescue page unless its possible to fix this mess from the error prompt.
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Jan 28, 2010
Environment: A 32-bit kernel RHEL5.3 system running on a virtual machine. The root(/) filesystem is on an LV.
Issue: Unable to resize the FS after extending the root LV since it is mounted. After extending the LV, online resizing of the FS was not supported and the root filesystem could not be unmounted while it was in use. On rebooting, I got a kernel panic error. In runlevel 1, I couldn't run chroot, couldn't find the /etc/fstab, root FS could not be mounted, fsck did not run (tried block 31 for second copy of superblock using dd count=1 bs=4k skip=31 seek=1 if=/dev/sda2 of=/dev/sda2), couldn't find any rpm on installation media to install unix-utils rpm. On running commands in runlevel 1,
I got the following output.
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Apr 30, 2010
After upgrading to 10.04 from 9.10 Win7 wouldn't startup any more. So I tried this HowTo: [URL] to restore Grub2. But now each time I boot up I get this two lines: error file not found grub rescue> I have NO idea what to do.
[Code]...
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Aug 16, 2011
Bottom Line: Dvd Drive died in my toshiba laptop and it was replaced (not before tech for some reason reformatted the Win7 partition... which was 100% un-needed, but thats beside the point now. I redid win7 (the tech installed vista) and am TRYING to "redo grub". Facts: The Slackware AND Ubuntu Partitions ARE STILL THERE and when i use SuperGrub Boot CD (which doesn't restore my grub by itself) to boot into slackware, i can see ALL THE CONTENT of both Linuxes still there including grub on ubuntu partition
(Tri-Boot: Ubuntu, Slackware, and WIn7) I had it working for two years or so, SO i know this "setup" works fine. I am A) Trying to do this as simply as possible. B) Trying to avoid the need to download a 800MB ISO (as seen for this issue on this forum) and trying not to have to reformat Ubuntu Partition (though I have the .Debs I have downloaded for it backed up ... all 1.7GB of them) I have /dev/sda1 as win7, /dev/sda2 as Slack and /dev/sda3 as Ubuntu (which contains Grub Legacy).. Every command I do seems to result in an error like "invalid command" or "invalid Execution format " (i think that second one is right) type errors. I compiled (awhile back) a few kernels for Slackware, but feel goofy that I cant figure what i this out (what i thought was going to be a "2 minute" fix)
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Jun 23, 2010
Ubuntu 10.04 was in small slave-disk, and I put other bigger disk same type IDE/ATA.In first start I get message: "no such device....., grub rescue."Anyway, I make installation in this disk and and now after start message is: "error: out of disk, grub rescue.So now I can not use master/XP and no slave/Ubuntu.
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Aug 27, 2010
I have a vista/ubuntu system. I tried to restart the computer into vista and it came up grub rescue. I did what someone suggested and typed in grub rescue> set prefix=(hd0,5)/boot/grub grub rescue> insmod (hd0,5)/boot/grub/normal.mod rescue:grub> normal Anyway that got me into a menu where the ubuntu server is. I chose it and it sends me into tty1 where it asks for my login My login when the machine used to come up log/pass was dan/mypass
but in the tty1 it says login incorrect. I need to get back into my server. I'm not sure why it's messed up. So how do I do it.
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