Error Ubuntu Installation Boot Problems Live Posts Drive Grub Cdrom
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Grub Rescue Usb
Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Grub rescue doesn't allow me to boot from LIVE CD/USB up vote 2 down vote favorite
Grub Rescue Usb Boot
1 I used to have Windows Vista & Ubuntu 12.04 on dual boot. Accidentally, I deleted the Linux partition and landed on Grub rescue on the next boot. The tricky thing for me here is I have been trying to boot through LIVE CD/USB of the ubunutu version, other linux versions but in vain. What happens is, it appears as if it reads the CD/DVD drive or the USB flashes for a while when trying to boot through LIVE grub rescue can't boot from usb versions but the Grub rescue appears after a while. The only option I could think here is to remove the hard disk and connect to the other laptop I have through USB and reinstall a fresh OS. Please suggest me a way to boot through the DVD/USB again. My laptop is Sony VAIO CR32 series.Thanks. grub2 grubrescue share|improve this question asked Nov 22 '12 at 22:50 Thameem 11112 1 Hi, try hitting the escape key as soon as you hit the power button and then hit F9. That should take you to Boot Device Options; select your CD or USB. =) –QuietThud Nov 22 '12 at 23:39 add a comment| 3 Answers 3 active oldest votes up vote 2 down vote Boot order is determined by BIOS and what medium to boot from is decided by the BIOS before GRUB is invoked. I.e. BIOS tries the devices one by one in the order specified in the "boot order" setting, once it finds something resembling a valid boot record it passes the control to the bootloader on that drive. So if you see GRUB prompt at all it means that either your boot order is incorrect, with the HDD being on the top, or that your boot medium does not contain a valid boot record. Can you test your CD/USB to see if you can boot another machine from it? Also please double-check that in you
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Grub Rescue Filesystem Is Unknown
Official Documentation User Documentation Social Media Facebook Twitter Useful Links Distrowatch Bugs: Ubuntu PPAs: how to exit grub rescue Ubuntu Web Upd8: Ubuntu OMG! Ubuntu Ubuntu Insights Planet Ubuntu Activity Page Please read before SSO login Advanced Search Forum The grub rescue boot windows 7 Ubuntu Forum Community Other Discussion and Support Tutorials HOWTO: Boot & Install Ubuntu from the Grub Rescue Prompt Having an Issue With Posting ? Do you want to help us debug the posting issues ? http://askubuntu.com/questions/220741/grub-rescue-doesnt-allow-me-to-boot-from-live-cd-usb < is the place to report it, thanks ! Page 1 of 5 123 ... Last Jump to page: Results 1 to 10 of 45 Thread: HOWTO: Boot & Install Ubuntu from the Grub Rescue Prompt Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode October 17th, 2010 #1 drs305 View Profile View Forum Posts Private Message Staff https://ubuntuforums.org/showthread.php?t=1599293 Emeritus Join Date Jan 2007 BeansHidden! DistroUbuntu Development Release HOWTO: Boot & Install Ubuntu from the Grub Rescue Prompt HOWTO: Boot & Install Ubuntu from the Grub Rescue Prompt This guide will detail how to boot an Ubuntu Live CD ISO from the "grub rescue>" prompt. The procedure will also work from the "grub>" prompt for Grub 2 users. I started this thread to help netbook users who are unable to mount the Live CD to resolve Grub problems on a previously-working installation. No CD is required. While writing the guide, I realized there might be others who could also use the instructions so I removed references to "Netbook" from the title. Preconditions This procedure will work for: Ubuntu family releases using Grub 2Malformed Grub 2 menu (grub.cfg)Missing Linux kernels & initramfs imagesCorrupted system folders (not including the module folder) In order for this procedure to work, you must: Have an Ubuntu family Live CD ISO image on a partition accessible from the Grub rescue prompt.Grub modules from a previous installation must be found and properly loaded. The procedure will not work for: Missing Grub 2 modules (normally in /boot/grub or /usr/lib/grub/i386-pc )Corrupted Ubuntu ISO imagesCorrupted partition structure - "ls" returns only "(hd0)" Boot Procedure Download th
distributions from 8.04 'Hardy' onwards have 'Startup Disk Creator' a usb-creator tool that creates a bootable USB flash drive from a Ubuntu CD or iso image. Most users should use Startup Disk Creator or Unetbootin instead of many alternatives described here that perform similar https://help.ubuntu.com/community/USB%20Installation%20Media steps. Current Ubuntu versions can also be cloned directly from the iso file to a USB drive. See Installation/FromUSBStick. UNetbootin (Windows or Linux) UNetbootin automates this task by providing a GUI to create a bootable Ubuntu http://deshack.net/ubuntu-dual-boot-grub-doesnt-start/ Live USB drive from an ISO file, and can be run from both an installed Windows or Linux system, or from a liveCD. Optional: If you need to activate the original Ubuntu livecd boot menu, for example grub rescue if you want to disable the framebuffer or read the Ubuntu livecd HELP screens and cheatcodes, please make these changes to your USB drive after your UNetbootin installation is completed: 1) Delete the SYSLINUX.CFG file or rename it to be SYSLINUX.OLD 2) Enter the ISOLINUX folder and rename the ISOLINUX.CFG file to be SYSLINUX.CFG. You may or may not need to rename ISOLINUX.BIN to SYSLINUX.BIN, but it won't hurt. 3) Move up to grub rescue usb the top level and rename the ISOLINUX folder to be SYSLINUX Portable Linux This will install the LiveCD environment from your install CD onto the USB drive. When you boot from USB, it will show you a GRUB menu with one option in it, which will then take you directly into the LiveCD environment. You can use this to install Ubuntu onto the computer's hard drive by using the Install icon on the desktop. Persistence is setup automatically, so it will remember any changes you make between reboots. You can also use the built-in GRUB to launch other disk images, like MS-DOS or memory test. The USB drive has a single normal partition on it, with a casper-rw image and a boot directory for GRUB. You can use the drive normally when not in the Live environment, and access it from the Live environment through a loopback. Live USB creator (GUI-based, runs from Live CD) Live USB creator automates the process of creating a bootable Live USB system from a running Ubuntu Live CD. Simply run the Live CD, install the tool and start the Live USB installation from the System administration menu. https://launchpad.net/liveusb -- probono You can run the tool from your normal desktop, just insert the Ubuntu Live CD and run it. You may
boot: grub doesn't start Posted on October 4, 2014October 6, 2014 by deshack in Ubuntu TweetWhen you want to install Ubuntu in dual boot with Windows 8, you need to take into account that you can encounter some problems. Today I'll tell you an anecdote and explain how you can fix the following problem: grub doesn't start on a Ubuntu 14.04 dual boot with Windows 8.1.The storyA week ago I installed Ubuntu 14.04, codenamed Trusty Tahr, alongside Windows 8.1 on a friend of mine's computer. I did not install the available updates upon installation, to make it faster. Everything worked well: UEFI did not cause any trouble, both Ubuntu and Windows started as expected. I then installed the Italian locale packages and postponed the updates.Today I finally found the time to update the installed packages. Once installed, I restarted the computer in order to apply and test the update. And here comes the surprise: grub didn't start, the pc booted Windows directly.Solve the problem: grub doesn't startWe have a problem, but fortunately Windows is not compromised. So, let's go and fix the problem.What you needIf grub doesn't start, we can't access Ubuntu directly. Here's what you need:a live Linux distribution either on a CD/DVD or on an USB stick;a little bit of patience.Nothing else? Exactly, that's it.First try: Boot RepairThe first thing you can do is using Boot Repair to reinstall grub with all the options you need. You can find instructions about how to install and use Boot Repair in the Ubuntu Community Help Wiki.How to solve the problemMost probably the first attempt with Boot Repair didn't solve the problem. But we are Linux users, so we can find a solution by searching in the Web and with a little bit of luck.Boot into your live Linux distro (from now on we're going to call it just "Live") and open GParted or any other partition manager it has. Look for your Ubuntu system partition and write down somewhere its file name (that in the form /dev/sdxn, in my case /dev/sda7) and its filesystem. We'll call it /dev/sda7, but keep in mind to change it when you type down the commands.Chroot into your systemFirst things first: chroot into your system to execute the actions needed to fix the issue. Open the terminal, login as root and mount Ubuntu. Replace /dev/sda7 with your partition, and ext4 with the filesystem of your partition.sudo su cd / mount -t ext4 /dev/sda7 /mnt mount -t proc proc /mnt/proc mount -t sysfs sys /mnt/sys mount -o bind /dev /mnt/dev If your /boot directory is on a different partition from your /, you'll also need to mount that partition with the following command (remember to replace ext4 and /dev/sda2:mount -t