Ubuntu / Apple :: Grub Error - Boot Back Into Mac Os X?
May 6, 2011
I am persuaded now (too late) that I need to invest in a robust backup scheme.
I had refit dual-booting snow leopard and ubuntu 10.10.
I tried to upgrade to 11.04 and it got stuck on bootup after the upgrade.
So I went into disk utility and deleted what I thought were all partitions except the mac one. I rebooted, and now I get the grub no partition error.
Did I delete my mac partition? I don't think that I did. How do I boot back into mac os x? Using the option key on bootup no longer shows a mac disk and inserting the mac os x system cd doesn't show any options either.
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Mar 21, 2011
I installed Lucid Lynx on my Powermac G5 but mistakenly forgot to uncheck the yaboot boot loader. As a result, my LCD's do not received a video signal from the system until after the boot loader had loaded linux.There seems to be no way to boot back into OS X. I would like to replace the Yaboot boot loader with the original Apple boot loader without having to reinstall the system software and just use the <option> key at startup to select Linux when I need it.
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Nov 21, 2009
since i have installed the nvidia drivers i have lost the graphical boot and just had a bar at the bottom of the screen instead. i tried to get the graphical screen back by adding vga=795 to my /boot/grub/grub.conf but when i rebooted not only did i not get the graphical boot or the toolbar at bottom.
i got list of all the drivers and services it is starting with ok next to it. i have also since doing this lost the bit when restarting or shutting down getting the words restarting or shutting down and just get blank screen with flashing cursor. i removed the vga=795 and i still get the list of drivers/services loading.
how do i get the quiet option back. i have checked /boot/grub/grub.conf and it has the quiet in it.i have also tried running update-grub but get message command not found. i have attached the grub.conf file
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Jul 8, 2011
I am new to Linux. I have installed RHEL 5.4 on my PC with preloaded Windows XP.
Windows was set as the first boot kernel. So if i do not choose which OS to be loaded it will load Windows by Default.
Today I got an error saying GRub Loading Stage2 read error.
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Aug 3, 2010
First up, assume i know nothing about computers. I have a MBP 5,5, and choosing the logo for windows brings up the grub menu, as does choosing ubuntu's logo. I've read a lot saying i need to install GRUB natively under ubuntu, but I've had no luck doing so. can anyone essentially walk me through this step by step? or offer alternatives?
MBP 5,5
OS X 10.6.4
Win 7
ubuntu 10.04
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Nov 16, 2010
Last night I installed ubuntu 10.10 unto a macbook pro 5,5 following the instruction from the MactelSupportTeamAppleIntelInstallation however I made a mistake during the installation process. I forgot to go into advance settings and choose to install the bootloader on /dev/sda3. I'm not exactly sure why this step was needed since everything was working fine anyways, but I was wondering how can I remove the bootloader from /dev/sda and install it on /dev/sda3 without breaking anything. [URL]...
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Aug 2, 2011
I've been running Ubuntu for some time on an old MacBook 3,1. It has been a happy OSX / 10.04 dual boot. I'm attempting a triple boot: OSX / Ubuntu 10.04 / Ubuntu 10.10. The partition scheme is similar to this, I've lost exact partition sizes:
Code:
1 20.5kB 210MB 210MB fat32 EFI System Partition boot
2 210MB 32.9GB 32.7GB hfs+ Untitled
3 33.1GB 33.2GB 105MB ext2 Untitled
4 33.2GB 33.9GB 734MB linux-swap(v1) Untitled
[Code]...
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May 16, 2011
we have an oracle application server on red hat 4.6 upon booting it comes up with error: attempting boot from hard drive (c GRUB)
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May 28, 2010
I reinstalled Mac OSX and my Mac files on my 24" intel core 2 duo iMac from a Time Machine backup. The Linux and Swap partitions appear to be unaffected. However, rebooting into Linux 8.04 stops at the Grub stage.
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Mar 15, 2010
I have an Acer Aspire 5810T which came with Windows Vista. I prefer Ubuntu but I need some windows applications so I dual-booted Vista and 9.10.
There was a few minor problems with the Vista side but I didn't use it enough to care. A few weeks ago Vista would not open some programs and others would shut down automaticly and some would open but not connect to the internet like they should. This happened on my previous laptop and when I used the system recovery discs to restore the computer all those issues were gone.
I used the recover discs to restore everything to its original factory settings, it said everything was successful so I restarted. My computer got to the grub menu but when I chose Windows Vista as my operating system it goes black for half a second then returns to the grub menu.
I can get into Ubuntu fine, and I can see the Vista files when I mount the drive to Ubuntu. When I look at the files everything is the way it should be if I had restored it but I can't boot it..
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May 23, 2011
I have 10.04 and 11.04 in dual boot. how I can get back to exclusively 10.04. I am nervous about the GRUB change.
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Nov 28, 2010
Dual-Boot: Mac OSX and Ubuntu
Want to dual boot 10.04LTS and OS X 10.6.5
But there is no option to install the boot loader (grub) to /dev/sda3 as per the following
using Bootcamp
https://help.ubuntu.com/community/Ma...elInstallation
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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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Mar 10, 2011
This seems to be a variant of a problem many people have had, but after several hours trawling through various forums, I haven't seen a reliable match for my situation.In brief:Adding a third boot partition (of Ubuntu) to my existing dual boot of OSX 10.6 and Windows 7 seems to have crippled the Windows boot from working, because Grub apparently takes over the process. Yet Grub does *not* appear to be on the Windows partition.
More verbose:I have an older MacBook Pro (3.1, running Snow Leopard) that I recently refitted with a new 240GB SSD HD. With the extra space (it was previously only 120GB) I decided to add a dual boot with Windows 7 using bootcamp. This all went swimmingly well.Encouraged, I decided to follow this Lifehacker article's suggestion and triple-boot the machine with Ubuntu (I'd never used Linux before):So I now have the nice rEFIt boot partition selection screen, and, indeed, I'm up and running in Ubuntu, and enjoying it.
Only one problem: I can't get into Windows any more. If I try to go in through rEFIt *or* by holding down OPT at startup and selecting the windows partition directly, the result is the same: I get thrown into Grub's selector, and selecting the Windows partition from there leads to an error message and a dead end.Having read through numerous postings, I get the impression that Grub is doing something or living somewhere that it ought not to be, but in most cases I've seen, people had accidentally installed Grub onto the Windows partition (or indeed onto EVERY partition). So far as I can tell, this isn't the case with me. Here's my boot summary:
Code:
Boot Info Script 0.55 dated February 15th, 2010
============================= Boot Info Summary: ==============================
[code]....
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Jul 27, 2010
Whenever I load Ubuntu on a machine with other OS(s) loaded it always recognizes and adds an entry in the bootloader menu. Not this time. Well kind of. After the install my windows boot option was in the menu, but after an update it is no more. I see the different Linux images... but no Windows boot option. Can someone tell me how to add my windows XP boot option back to the bootloader? I have XP on the the on the 5th partition and Ubuntu on the 6th...
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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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Dec 17, 2010
I get the new boot splash with the nice little rocket and all but I seriously dislike it. While I don't stare at my computer as it boots, I do happen to see it from time to time. Unfortunately, I always see this new little rocket and I wonder where my traditional Debian blue with the swirl went. Yes, I know I am using Grub-Pc now, and I have tried to edit my /etc/grub.d file by renaming the wallpaper line to my preference.
But all my config file sees is "background-grub.png" which is the little rocket ship. So, I give. What is the secret code to unlock my grub config file or do I seriously have to muck around with Plymouth in order to have a choice in the matter? Just for those of you who contemplate counseling me on better time management instead of wasting my precious time over such a silly little thing, I agree. Not to mention that I use Debian because I like to build my system.
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Oct 23, 2010
I have installed Ubuntu 10.10 on a USB 2.0 flash drive (8GB),like this: [url]
The installation was successfull, but when i want to boot ubuntu, it shows the grub, and after it, an error message: "You need to load the kernel first. Press any key to continue"
I've got a Macbook Pro 13'' (2010 edition) with a Intel processor.
My grub.cfg file is here:
Code:
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Apr 7, 2010
after doing an upgrade to 10.4 and updating grub I get this message. how do I address this
[Code]...
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Feb 6, 2010
not sure what happened, yesterday i installed the new kernel and played around a bit by uninstalling some older kernels. Everything was fine but now i cant boot into ubuntu any more. I have a Dual boot and Grub let me boot into windows. for linux grub gave error 17 (if i remember correctly).o i popped in the LiveCD and tryed gparted to check for errors (nothing changed). I tried rewriting grub from the live cd and that made matters worse.
Code:
grub> find /boot/grub/stage1
find /boot/grub/stage1
[code]....
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Sep 4, 2010
I installed Ubuntu 10.04 LTS on a machine with 8.04 LTS, and have dualboot between those i system.The problem is when a start a get a message:'Boot error'If I hit 'Esc' I get to the Grub -meny and can boot as normal.
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Oct 16, 2010
Toward the end of installing Ubuntu 10.10 32bit (Alt CD) on my iMac 11,1, the installer asked me to type in the location for installing the grub boot loader.
I told it to use /dev/sda3 and it immediately failed. I'm still in the installer. Can anyone suggest a solution?
Here are my partitions on sda:
...from the shell in the installer, there is no grub.cfg in /target/boot/grub.
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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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Jan 9, 2010
I have a Compaq Presario CQ60 with Nvidia GeForce 8200M graphics card. When I first installed Windows 7 followed by Karmic in dual boot I could boot into both OS. Now when I try to boot into Windows, it displays the Windows logo and then drops back to the grub menu. It may have started happening after Windows 7 installed updates. I tried reinstalling both Windows and Karmic again and it again worked initially but now Windows no longer boots. Does anyone have any suggestions about what may be causing this or how I can fix the problem without reinstalling?
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Feb 24, 2010
I installed ubuntu 9.1 today, my friend also installed it using a disc which I borrowed Everything seemed to go fine. I used boot camp to make a partition after going through the installation process I found out that, that was a bad idea and i just made a ubuntu partition of 18gb. I was able to get rid of the bootcamp partition so now i Just have free disk space left out of that.
I wanted to switch back to my Mac to get to work on somethings after I had installed ubuntu. However a after the GRUB and clicking on Mac A black screen with words and numbers I haven't seen before popped up. Here is some of what it said
panic (cpu 0 caller 0x2ad0d5): Incompatible boot args version 1 revision
Debugger called <panic> Backtrace (cpu 0) frame return ad. 4 potential args on stack ** alota numbers here**
BSD process name corresponding to current thread: unknown
Mac os version: not yet set **some other stuff here*
I really just want to use my mac again. It doesn't matter to me if I still have ubuntu or not.
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Apr 22, 2010
I was able to make a grub.efi boot loader finally. But in the end it did not make or generate a grub.cfg, so every time i boot using this loader I get the grub bash shell and nothing else. I tried copying the on from my harddrive to the EFI folder on my flash drive but still nothing.
What i did was compile the loader from source using the directions here, then formated a 4 GB flash drive to gpt, and a fat32 File system. Then moved all of the grub items to /efi/grub. Once done i then rebooted, booted to a rEFIt cd and then used it to boot to the USB (the folder is not blessed yet). Then once i got to the loader screen its just a EFI screen, no boot choice Nothing... just a recovery bash. What am i doing wrong... did i do a step wrong, did i compile wrong? What?! could some on PLEASE tell me how to get the EFI grub to make/use a grub.cfg file!
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Dec 2, 2010
I have been given an Apple Ibook that wont boot
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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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Jan 23, 2011
I finished loading Ubuntu 10.10 onto my Mac PPC G4 from DVD and restarted.Restart but will not proceed beyond black screen with alert:
boot:
Please wait, loading kernal...
/pci@f2000000/pci-bridge@d/mac-io@7/ata-4@1f000/disk@:3,/boot/vmlinux: Input/output error
boot:_
Tried rebooting with "Option" key and choosing Linux, but no difference.I am trying this on a Mac G4 with Ubuntu 10.10 installed on its own drive.There is another drive with Mac OSX 10.2.8.
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May 29, 2010
I think I may have hastily installed Ubuntu on sister's Intel iMac. I'm not much of a techie and she'd asked me to make a dual boot system. I burned the ISO file and ran Boot Camp on her iMac and seemingly everything went through properly. However, upon restarting the system, I get a DOS-like page showing the boot options. Switching to 64-bit OS X resulted in a failed boot as did the option for 32-bit OS X. I'm in a bind as she needs to get back into OS X to work on her project.
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