Ubuntu 12.04 + software RAID = error: unknown filesystem, grub rescue (UEFI)
location: ubuntuforums.com - date: January 23, 2014
Hi! I'm posting here for the first time, though reading this site looking for solutions almost every day.
I'm trying to install Ubuntu 12.04.3 with soft-RAID on a IBM server with UEFI support. After the installer reboot it fails with grub error: unknown filesystem. If I put the HDDs to another machine (a generic PC without UEFI) it boots correctly. I suspect it's either an issue with the UEFI/Legacy modes or with the hardware in some way, though may be the installer failed to detect/configure something and it should be fixed manually. Here are the details.
The IBM server:
Brand new IBM System x3100 M4, firmware v1.07, IMM v3.65 (up-to-date)Intel Xeon E3-1240v2 @ 3.4GHz8Gb ECC RAM (all memtests OK)2 x SATA 1Tb WD RE4 (WD1003FBYZ)The system has a fake-RAID, but it is disabled in the BIOS (Configure SATA as: AHCI).
The generic PC:
Asus P5KPLIntel Pentium 44Gb RAMSame HDDs from the IBM server
The intended install:
Ubuntu 12.04.3 Alternate x64 (ubuntu-12.04.3-alternate-amd64.iso)RAID1 f
Ubuntu 12.10 / Windows 7 dualboot: Unknown filesystem, grub rescue
location: ubuntuforums.com - date: January 30, 2013
I have a Ubuntu 12.10 and Windows 7 dualboot installed on my Asus Zenbook. I wanted to remove Ubuntu, so I thought I could follow this guide to restore the Windows boot loader http://www.howtogeek.com/howto/33433...ubuntu-update/ and remove the linux partition after that. I also have the Asus recovery partition, so I booted into that to see whether the Asus recovery wizard had an repair option. Well, it didn't, the only option was to recover Windows to the entire hd. So I canceled the wizard, but after this I was greeted with "error: unknown filesystem" and the grub rescue prompt.
I'm scared of messing things up further, what should I do to either get back to my dualboot or create a windows-only-boot?
Would booting a Live USB and restoring the Windows bootloader with syslinux or mbr work? (http://robert.penz.name/221/mini-how...omment-page-1/)
I'm a newbie, so I'm not sure about the sda part though. The windows partition is sda1, does that mean I should replace
"Error: Unknown filesystem, grub rescue>" with Ubuntu 11.04
location: ubuntuforums.com - date: April 10, 2011
I'm new to the forum and pretty much an Ubuntu newbie. The thing is, I was on my laptop today and suddenly Chromium crashed and everything freezed, so I had to turn my laptop off manually. When I turned it back on, I got this message:
"Error: unknown filesystem
So, I've been reading everything I found related to this message and Ubuntu 11.04, but since it's a Beta release, I couldn't find much. The real problem here is that I read plenty of solutions for this problem, but I can't try any of them because when I try to load a Natty (or a 10.04, tried both) Live CD, I get something like a Terminal but I can't do anything! I mean, there's a black screen, I can type things on it but nothing ever happens.
I also have Windows 7 installed but haven't used it since I installed Ubuntu 10.04 (then updated to 10.10 and about a week ago updated to 11.04)
Any thoughts? Any recommendations regarding what I should do to be able to enter Ubuntu via a Live CD?
Ubuntu 12.04 software update error.
- date: June 10, 2014
I am running Ubuntu 12.04 and keep getting software update errors. Attached are screenshots of the error along with details.
I am also adding the System Log below at the time the error occurs:
06/10/14 12:34:53 AM ubuntu AptDaemon.PackageKit INFO: Get updates()
06/10/14 12:34:54 AM ubuntu AptDaemon.Worker INFO: Finished transaction /org/debian/apt/transaction/cd560749cb60411f8a40f54764fb6c62
06/10/14 12:35:31 AM ubuntu kernel [ 224.782558] sda1: WRITE SAME failed. Manually zeroing.
06/10/14 12:37:18 AM ubuntu anacron Job `cron.daily' started
06/10/14 12:37:18 AM ubuntu anacron Updated timestamp for job `cron.daily' to 2014-06-10
06/10/14 12:37:22 AM ubuntu postfix/pickup A32D441226: uid=0 from=<root>
06/10/14 12:37:22 AM ubuntu postfix/cleanup A32D441226: message-id=<[email protected]
06/10/14 12:37:22 AM ubuntu postfix/qmgr A32D441226: from=<roo
Will Ubuntu 12.04 software raid recognize 4tb disks?
location: ubuntuforums.com - date: March 28, 2014
I am working on building a file server using Ubuntu 12.04. I've already installed the OS on a small RAID 1 and am preparing to make a 16tb (12tb useable) RAID 5 using 4 x 4tb disks. I've read a variety of information about the 2tb limitations of mbr disks, and the need to use gpt for disks >2tb, but it's still a bit fuzzy for me.
The following tutorial worked PERFECTLY using small 250gb disks: http://zackreed.me/articles/38-softw...ian-with-mdadm
But will it work for 4tb disks? Would someone please look and give an opinion?
The process seems to include a section where the partition is created using a gpt label, but I'm skeptical because I guess I thought it would be more complicated than this.
10.04 erase partition. Result: error: unknown filesystem grub rescue>
location: linuxquestions.com - date: December 6, 2010
I have Win XP and Ubuntu 10.04 dual boot.
I was trying to uninstall Ubuntu. Instead I removed the partition and the result is:
error: unknown filesystem
I tried to boot from a 10.04 and 10.10 Ubuntu CD and I get the same error message.
GRUB error: unknown filesystem, grub rescue
location: linuxquestions.com - date: January 9, 2010
Hi, I have dual boot with Ubuntu 9.10 and Windows 7. Today, after using Partition Wizard on Windows to resize its partition, I got the following message when reboot:
error: unknown filesystem, grub rescue prompt
location: ubuntuforums.com - date: July 2, 2011
I've been using Ubuntu quite a while now. I was finding myself running out of space on my Ubuntu partition but having much too much available for the windows that I hardly ever use. Most of that space is pictures, music and iso's. Also, when I did what I believe is called a clean upgrade to natty, I didn't choose to do the partitioning myself. It used the existing Ubuntu partition as I planned but it created another swap partition.
So I needed to reconfigure my partitions. See the first screenshot. I had the Toshiba system volume, win 7, the Toshiba provided recovery that was useless as it would have recovered vista, and my extended partition as primary partitions. I had Ubuntu, 2 swaps and a real small un-allocated space for some reason. I deleted the recovery partition, sda3. I deleted both swaps in the extended partition, sda 5 and 7. I shrunk win 7. I expanded the extended partition, sda4. By the way, you can try and try to shrink win 7 using windows and never get very far. You
[SOLVED] error: unknown filesystem. grub rescue>
location: linuxquestions.com - date: May 11, 2011
error: unknown filesystem
My apologies for having to post, but after reading Similar Threads, and a few help tutorials, I just don't understand enough about the problem to correct it.
Background: My mother's HP laptop had Ubuntu and Vista on it, Ubuntu my brother's doing. He decided he wanted to take off Ubuntu yesterday (he had forgotten the password), and deleted the partition that it was contained within. The computer now boots to this error.
Inventory: We no longer have the install disk for Windows Vista, he cannot tell me what version he used of Ubuntu, what partition it was on, any of the specs for the machine, or generally any information about the system. All I am aware of is that error on the boot-up screen. I have nothing else to work with.
I would like to remove Grub, and Ubuntu, and leave Windows intact (the request of the owner of the computer), but I have no idea what commands I could use to get rid of either when I can't access Windows, or ho
error: unknown filesystem grub rescue>
location: ubuntuforums.com - date: May 5, 2013
hi i got problem on boot loader. i just deleted a bactrack on windows 8 partition manager and everthing was fine the problem is when i reboot the laptop and error appear.. error: unknown filesystem
i encounter same error like this on windows 7 and i search on google how to fix this issue but now i cannot enter on windows 7/8 installation i have change the 1st boot to my dvd but when i reboot. grub error is appearing.
i know there's a thread like this but i follow the step and still don't fix my problem... my laptop is samsung
Processor AMD e-350 processor
memory 2gb ram
amd radeon hd 6310
please help me thanks a lot
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