Ubuntu :: Broken Grub On Dual-boot System - Get A Flashing Cursor On A Blank Screen When Try To Load
Nov 2, 2010
I installed Win7 after Ubuntu (10.10). I attempted to reload grub so that I would be able to run them dual boot and now I can't load anything.
I followed the guide here: [url] and went threw it a couple of times now to make sure it wasn't user error.
I am using a live cd from 10.04 because it's the only one I have. Any chance that's why it isn't working properly? I wouldn't think so, but I assume that it's possible.
If that is the case; Any way to solve it without using the live cd? I cannot burn a new disk because I have to boot from disk to use my computer right now.
I just get a flashing cursor on a blank screen when I try to load.
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May 1, 2010
I have just updated to 10.04 on my Dell Insperon 8200 laptop, and all seems well with Linux.My problem is that although it shows in Grub Windows XP will not load. I just get a blank screen with a flashing cursor.I have tried to grub-mkconfig and grub-update, both of which reported successful results.However on reboot I still get a blank screen for windows.This was not an issue with 9.04 and 9.10.so I don't think it is the machine.
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Feb 7, 2011
Running 10.04 as the only OS on a HP desktop - been running fine for months. Did an update - probably hadn't done one for a couple of months - may be a red herring. The system appeared to crash while inactive. Trying to boot - I get the Ubuntu 10.04 screen for a short while then it goes to blank screen with a flashing cursor at the top - occasionally it will give me an error that /home is not ready - skip or manual fix. I have sda1 = ext4 root
sda2 = swap
sda3 = ext4 home
sdb1 = ntfs
I removed sdb1 from fstab as initially it was complaining about this drive not being ready. The error switched to complaining about /home. I am able to mount both of those filesystems with no problem manually. I ran mke3fs on /home (I forgot the -n parameter! but no problem as I have good backups) - same error - complains about /home not being available at boot even though I can always manually mount it from live cd or manual recovery. I can rebuild this system - and I may as it was upgraded from 9.10 - I may do a fresh 10.04, but I would like to fix the boot problem in case something like this happens again when I actually care about fixing it.I recreated the grub2 configs - I don't have the command to hand, something like: sudo update-grub --root-directory=/mnt/boot/grub /dev/sda
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May 28, 2010
I recently installed Ubuntu 10.04 on my Aspire One netbook, but everytime while booting, I am stuck at a blank screen with a blinking cursor. I've tried reinstalling but to no help. I've also tried installing 9.10, which will boot, then upgrading to 10.04 which then produces the same problem.
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Aug 7, 2010
I have a desktop with AMD Sempron 3000+, 1.2GB RAM, VIA S3G Unichrome Pro IGP, VIA SATA RAID controller based disks, PS/2 mouse and keyboard running Windows XP. Wanted to move to years ago favourite (linux based systems), I downloaded Ubuntu 10.04 for i386 and am trying to install both using CD as well as USB. After the Ubuntu start-up menu for installation, I select install Ubuntu option, turn off 'quiet' so that I can see what happens. The screen goes blank dark with a flashing cursor at the top.
In the kernel messages, the see that it has detected the processor, set the clock, assigned the PS/2 keyboard to input3 and then says:
[1.911624] isapnp: no plug and play device found
After this, the system hangs. Keyboard doesn't work.
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Jun 20, 2011
I'm using "sudo rtcwake -m disk -s 5000" or whatever the seconds is for the time I need it. It doesn't help if I use mem. Anyone know what's up or know a better program?
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Oct 19, 2010
Slack 13.0 X sometimes fails to start after boot about 50% of the time. linux says "starting X11 session" then I get a blank screen with a flashing cursor and absolutely nothing else. I can <ctrl>-<alt>-<F7> and get a text prompt, log in, and startx from a command prompt. After that, I can reboot once or twice and still get a graphic login, but will soon revert to the dumped condition. I have reinstalled X and KDE twice now as well as deleting my .kde folder. This condition started when I inadvertently ran out of disk space on my /home drive. Since then I have migrated /home to a larger drive and watch it's disk space very carefully.
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Jul 4, 2010
When I try to start Fedora 12 all I get is a flashing cursor on thep LHS of my screen.This is new. Fedora 12 workd fine up until yesterday.treat me as a novice and if you start using technical terms I will just be lost
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May 6, 2010
I recently followed instructions to enable the nvidia driver. run the following commands:
[Code]....
then rebooted, a tricoloured loading bar appeared and finished, then all i got was a blank screen with flashing cursor. I don't get a prompt to login and can't access my account. I am dual booting on this machine with ubuntu, is there anyway i can restore my fedora partition and enable my nvidia graphics
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Oct 28, 2010
I installed Ubuntu a while ago, but sometimes (about half the time), when I boot my computer, go into the Grub bootloader, then whether Grub selects Ubuntu for me (not sure if this is an error as well, but I've found that if I leave it without pressing any keys, then Grub just boots into Ubuntu for me (also, it's the top option)) or I select Ubuntu, it then flashes a cursor (a '_' character) on the screen (it's also in the same font as the font used by BIOS, so I assume at this moment, it's in BIOS).
Next, one of two things happen. Either I have to wait a few seconds, then it boots into Ubuntu, OR, it just hangs like that, not booting into Ubuntu, and not responding to any key presses or anything, forcing me to power off my machine using the hardware button.My specs, generated from hardinfo, are:
Code:
-Computer-
Processor : 2x Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz
[code]...
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May 19, 2010
I installed Fedora 11 today, because I'm really looking to replace Windows. I've been running a Fedora 11 webserver at home for over a year, but this is Linux, which means that I spent about 8 hours on it over a year ago, and then only logged in once or twice since. :P
So after the install, I booted to a GRUB prompt and no menu. After searching around, I changed my BIOS settings to Large for the hard drive, and got the GRUB menu to load, and now I'm posting this from within Fedora 11, and after some good healthy exercises with the soundcard, xvid drivers, and a few other things, it's great.When I load XP from Grub, I just get a flashing underscore and no progress.XP is installed in the first partition, and has been there for a few months. Here's my grub.conf:
Code:
#boot=/dev/sda
default=1
[code]...
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Mar 12, 2010
I've just installed ubuntu 9.10 from a live cd on to a 2nd HDD, with vista on the 1st. When I turn my PC on GRUB comes up and I can select ubuntu or vista, vista works but when I try to boot ubuntu the screen goes black with a small flashing underscore in the top left and then just goes completely black, nothing else happens after this. I've tried reinstalling from the live cd but when I go install nothing happens and the screen goes black again. When I was installing I changed the boot to something like scsi?
My PC's specs are:
Dell inspiron 531
HDD1: Ubuntu(300GB)
HDD2: Vista(1TB)
OS
Windows vista
Graphics card.
ATI radeon HD 4700 series
CPU
AMD Athleon 64 x2 6000+
Mainboard
Manufacturer : Dell
Model: 0RY206
BIOS: dell 1.0.13
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Jun 16, 2010
On my dual core AMD with 2 gig of memory I installed Lubuntu in VirtualBox for testing and the install was very smooth. My primary OS is Ubuntu 10.04 and it runs sweet. When I boot the Lubuntu virtual machine all I get is the arrow cursor and a blank screen.
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Aug 4, 2011
Just curious if there is any sort of issues with Ubuntu and JBOD assignments. I had my 2 500GB hdd's as JBOD through my mobo BIOS/RAID Config and it didn't like it. It installed just fine and showed the hard drives separately. I really didn't think anything of it so I continued on.After the install completed successfully, and I rebooted the system, it came to a blank screen with a blinking cursor and wouldn't continue on. So I tried restarting a few times, no luck. Finally I was like "okay screw this, going to install with no RAID setup or JBOD setup." (had RAID issues last night. rabble rabble) Removed RAID configurations and BAM started right up..S. Semi-new to Linux/Ubuntu. Know the basics and what not, just not some of the more advanced stuff.Edit: Okay, so I restarted my computer and removed my USB drive (which I had installed Ubuntu from) and it didn't boot. So it was NOT an issue with JBOD. Guess I'll look for a resolution for that, though.
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May 17, 2010
When i use my computer (whether it's going online, typing, playing a flash game, or coding) I get these "Black Flashes" that are becoming longer and more frequent. A "Black Flash" is when my computer screen turns blank (but you can still see the backlight) and i have to press the NUMpad ENTER button, shake my mouse furiously, or click my mouse, which sometimes causes undesired actions, but gets me my screen back. sometimes the Black Flashes last a milisecond or 5 seconds or i have to hold the power button and restart because it won't come back on.
Specs:
Toshiba P205-S6337 Laptop
Ubuntu Karmic Koala
2.39 GB of RAM
[Code].....
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Dec 13, 2010
I have had a working ubuntu 10.10 installation for about 2 months. I had it set up really nicely with my TV card and xbmc. I was really happy until I tried to boot it the other day to show a movie to the Mrs. All I seem to get is a flashing cursor after the initial grub selection. This is the same for both recovery mode and normal. I have booted it after editing the boot selection to removed the quiet splash and it seems to hang after a line that says some thing like "usb 1-4.2: new low speed USB device using ohci_hcd". The machine boots fine in to the Windose partition or in to a live CD.
I have done a bit of searching and I am struggling to find a good step by step troubleshooting guide. I dont really want to blat my setup but it would teach me a lesson about documenting things and blindly doing upgrades. I have included the results from my boot info below in case that points to anything.
[Code]...
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Jan 21, 2010
I have just wiped my whole hard drive to install a fresh copy of Ubuntu on it, and now as soon as i power it up it passes the POST screen and black screen shows up with a flashing cursor. I bliv it should say no operating system and pick the USB which has Ubuntu installation on it.I have formated the hard drive to NTFS, the system is Samsung NC10.
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Jan 26, 2011
I just got offshore and was trying to extract csv files with new software and the toughbook went crazy. When i try to boot it up it ends up with the black screen and flashing white x in the middle of the screen.Luckily the company have a back up to do the job but would like to try to resolve it on the rig rather than send it back to Germany
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Nov 18, 2010
I have always had Ubuntu installed along with Win 7 but rarely use it, i only use it if i am flashing firmware to my phone or something similar.
I uninstalled my older version of Ubuntu because it was becoming sluggish and have tried to install the 10.10 version a few times today, but every time i boot into Ubuntu, i get a blank purple screen and nothing else.
My mouse curser is the only thing that is working but there is nothing to click on and nothing shows if i right click.
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May 9, 2010
I am having the same problem, as soon as X tries to load my screen just goes blank. I have an ATI Radeon 9550. At first I tried switching between VGA and DVI as well but upon ruling that out, I switch to my on-board video card and that is working thus far, but I'm trying very hard to figure out a way to be able to switch back. Anyways I'll check back in later on if I have any new information I will post.
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Apr 23, 2010
As the topic says. I'm having problem after problem, everytime I figure out a way to take a step forward, my PC has pre-emptively taken a step back.
I'm unable to boot to X or (recovery mode).
I did try booting to a LiveUSB in order to run update-grub, but then it occured I have no idea how to do this from a LiveUSB that will affect the internal HDD installation?
So I'm currently trying to reboot from Live USB, but that just seems to have locked up the PC on the white ubuntu logo. I'm afraid to hard reset it (been doing too much of that lately). How long should a Live USB take to shutdown? (been about 10 minutes so far ). It's not a persistent LiveUSB as far as I know, and I basically just booted to the desktop and then start the reboot cycle as soon as I realised I didn't know what I wanted to do .
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Jan 29, 2011
After installing Ubuntu Server 10.04 LTS, I restarted my machine. I removed the disk, but now when it starts, it never gets to GRUB. Instead, it just takes me to a black screen with a blinking cursor. I can't type in anything and holding shift doesn't take me to GRUB.
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Jul 1, 2010
I have been trying to install openSUSE on a dell Latitude XT all day, and every time I tried to live boot, I got a blank screen. I finally decided to do a text install and I got it installed, but now I get the same result from booting off of the splash screen.
I can boot into text mode fine (still) but for whatever reason, it bombs as soon as I tell it to load the GUI. I have a 1.2 GHz Core 2 Duo, 3GB RAM, and an ATI mobility chip (2000 series, maybe?) I had the same problem with Ubuntu, and since I like openSUSE just as well, I figured I'd try it because I at least could do a text install from my liveCD.
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Dec 23, 2014
My Toshiba Satellite C870-198 has Debian 7.7 installed in UEFI mode alongside Windows 8.1. The GRUB menu no longer displays, but the machine boots straight into Windows.
I can boot into Debian or Windows from rEFInd installed on a USB stick. The rEFInd menu has the following entries:
The Debian entry actually launches the GRUB menu which was installed with Debian.
Code: Select allBoot Microsoft EFI boot (Boot Repair backup) from Basic data partition.
Boot supposed Microsoft EFI boot (probably GRUB) from Basic data partition.
Boot EFIubuntugrubx64.efi from Basic data partition.
Boot EFIdebiangrubx64.efi from Basic data partition.
Boot bootootx64.efi from Basic data partition.
Boot vmlinuz-3.2.0-4-amd64 from boot.
In an attempt to fix GRUB I executed the commands in the 'Reinstalling grub-efi on your hard drive' section of: [URL] ....
Code: Select allmount /dev/sda1 /boot/efi
... surprisingly returned:
Code: Select all$LogFile version 2.0 is not supported. (This driver supports version 1.1 only.)
$LogFile version 2.0 is not supported. (This driver supports version 1.1 only.)
Did not find any restart pages in $LogFile and it was not empty.
The file system wasn't safely closed on Windows. Fixing.
Code: Select all[ -d /sys/firmware/efi ] && echo "EFI boot on HDD" || echo "Legacy boot on HDD"
... returned "EFI boot on HDD".
[Code] ....
... Where is Debian?
FULL HISTORY ....
=============================
The laptop came with Windows 8 preinstalled. I switched off Secure Boot and installed Ubuntu for UEFI dual boot. I recall having to use Boot Repair to get the GRUB boot manager working properly for both systems.
Recently I decided to replace Ubuntu with Debian 7.7 and first cloned the entire hard drive to a USB drive (The Clone Drive). This drive successfully boots into Ubuntu in UEFI mode.
Following this I took the opportunity to update Windows to 8.1, which broke GRUB as expected, so that the machine would only boot straight into Windows.
I installed Debian from a live USB stick in the mistaken belief that it would be bootable in UEFI mode. It did boot OK in legacy mode.
I then burned the full Debian 'DVD' image to a USB stick, booted it in UEFI mode and reinstalled Debian. In UEFI mode GRUB allowed me to boot into both Debian and Windows.
At this point I tested The Clone Drive. It was still able to boot into Ubuntu as previously, but after powering down, unplugging The Clone Drive and rebooting, the GRUB menu failed to appear and the machine booted straight into Windows. This is its current state.
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Jun 26, 2010
I've run Debian on my laptop for quite some time now with no problems. I installed Slack to a new partition created in the free space of my hard drive, and I thik this was my mistake: I let Slack automatically configure the MBR with lilo (can't remember - I should stop operating on the MBR at 4 AM.) Now Slack runs just fine, but upon bootup I would like to be able to boot either Debian or Slack, but instead I just have a Slack splash and the only option is to press enter to boot Slack.
Code:
I believe sda1 is the root directory of my Debian install.
Code:
In the above table, sda10 is the swap I created for Slack and sda3 is the root directory for Slack. All other partitions were there before (my initial Debian install).
Thus my partitions are apparently intact and visible by the MBR (is it correct that the MBR holds the list of partitions on a disk?) but for some reason I don't have the option to boot Debian at all - just Slack.
I have a feeling this is a LILO/GRUB issue, but I don't know where to start.
EDIT: more poking around seems to reveal that it is the configuration of LILO that is the problem. Observe the following output:
Code:
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Feb 10, 2011
On reboot the GRUB2 installer shows me the options for OS - I select Windows XP and then I get a blank screen with a flashing cursor - and nothing.. I CTRL ALT DEL and it reboots back to GRUB2 and I select UBUNTU and I log in. This is the first time I have tried to reboot Windows XP after fresh install of UBUNTU
[Code]....
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Dec 17, 2009
I have installed F12 on the remaining space on my disk and now Windows does not boot anymore. I get to Grub and choose windows and then just get black screen with flashing cursor.
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May 3, 2010
I dual-boot Windows 7 and Ubuntu. Sometime between 4/18 and a few days ago, something happened with Windows booting up. Ubuntu boots fine, but whenever I try to boot Windows, it just goes to a black screen with a blinking cursor (the command line kind, not a pointer). At first I thought it was Windows, but I have run the repair CD and executed chkdsk /f and chkdsk /r on all partition related to windows. No effect.
I ran a system check designed for issues with booting up, and it found no errors. I have looked at my GRUB files, and they all look fine. I am not sure if it is GRUB or Windows. I tried reinstalling the Windows boot-loader, and it had the same effect, the only difference is that it bypassed GRUB. The reason I think it may be GRUB is that the error happened around the same time as me upgrading from Karmic to the Lucid RC. I have posted this on a Windows 7 forum.
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Apr 12, 2011
Finally made the switch over to ubuntu, but I needed to keep my windows7 for several reasons. Let just start by saying I have two hard drives, a 200gig(which holds my windows7 partition) and a 500gig(has a 100gig partition which has ubuntu on it). After finally getting 10.04 to install on the 100gig partition and everything running right, I tried to load up windows7 and got an error.
Something along to lines of "the partition does not exist". I believe I messed up on the last step on the install, as I might of just been careless. I remember reading somewhere that if using multiple hard drives grub may get messed up in one way or another. IS there a way to fix this and make grub realize that window7 is on another partition, or am I out of luck?edit: Id like to add that grub is recognizing windows7, it just will not load off the other partition(I think)
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Sep 17, 2010
this is a continuation of my install from : my experiences installing suse ( graphics stuff was from page 3)i have two graphics cards:ATI X700 x16 pcie card in a x1 slot (one monitor, left)NVidia GTX 7800 card in a x16 slot (two monitors, centre,right)machine boots up on the ati card, and i had configured them properly in the last topic, so now the setup looks good except for when i move the mouse cursor from the Nvidia card, left, over to the Ati card. this causes the GUI to be not responsive andthe cursor is flashing, either on neither monitor or one of the two and moving the mouse decides which (so its not a complete crash, but nothing is moving in the GUI). pressing many ys on the keyboard at once seems to stop the X and goes back to the the commandline.
the last problem i had in the last topic was that the virtual screen was not defaulting at the screen resolution i set and instead defaulted at 3840x1920 and i saw the top corner of the wallpaper. moving the mouse over to the ati card would still produce a crash with the above description.occaisionally the computer would crash with the same problem accross the nvidia monitors, however it always happens between the centre and monitors.i have installed the Nvidia drivers using a install program from the SUSe and it put the relevent packages on. Ati drivers are whatever came with 11.3 (and theseected that the card has two outputs). if its the nvidia drivers i could go back... (how?) hopefully it can use the two monitors still else its better to remove the ati screen in xorg.conf
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