Ubuntu / Apple :: Mac Booting With EFI GRUB?

Feb 11, 2010

I just install ubuntu Linux fully on my computer. Now i then install Grub-EFI, and EFI amd64. I also blessed my Linux partition. Now did i install everything to boot grub EFI? if i did. how do i know im booting using Grub EFI and not GRUB?

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Ubuntu / Apple :: When Booting Can Only Acces A Broken GRUB?

Dec 26, 2010

when booting I can only acces a broken GRUB and this is how I might have done it wrong. I installed Ubuntu the first time using dual-booting which I think is the worst way since it could be done better by using a Virtual Machine such as Parralels or VMware. Well later I noticed that after removing Ubuntu there was still 2 problems 1.when selecting a OS during startup When I select "Windows" it goes to a broken GRUB which displays something like this " Use tab to complete the first commands" GRUB><where you're suppose to type> and I can't type so I hard reboot it. 2. I could not get rid of LinuxSwap. Much later I removed LinuxSwap by booting in a Ubuntu live disk and then removing the partition as well as the Linux "/" and after booting to Mac OS X leopard disk0s1 the Mac OS X system partition was mounted which was bad since it was suppose to be invisible to even the root user unless viewed by terminal on any user.

Now later I reformatted it as "Mac OS X something extended" and at first it was unjointed and impossible to mount and after I reformatted it it appeared as disk0s3. Now the problem appeared.This is the stuff I can do1. I can type some commands in the GRUB but when I typed find / the output is something like can't find /2. I might be able to boot up a live disk however my Linux Ubuntu live disk is broken.3. this is my dad's second hand Mac G5 iSight, not mine and it was a bargain, it was cheaper than my iPad with Mac OS X Leopard 10.5#

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Ubuntu / Apple :: Booting From USB With Mac?

Nov 16, 2010

Doing some experimentation with the XP Home BootCamp on my MacBook, I installed Wubi. (Yes, installed Wubi, on a BootCamp partition, on a Mac). Amazingly, it works flawlessly! But I thought up something while considering the issues with booting from USB on a Mac. My theory is this: Its the EFI and the Firmware which has compatibility issues with booting from USB. But when running BootCamp to use a Windows Partition, it emulates BIOS, which nowadays is good with booting from USB..

So, If I select to boot from Windows, which then leads to another selection asking for Ubuntu (GRUB) or Windows, you could select Ubuntu, which chucks you up at the standard version of GRUB, which to my understanding does support from USB booting? Select your stick and your off. If somebody would be willing to try this theory or correct me, maybe you could think up some easier way in which to boot from a USB with a Mac.

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Ubuntu / Apple :: Grub EFI Will Not Make/use A Grub.cfg

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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Ubuntu :: Booting From NForce FakeRAID - Hand Correct Grub.cfg After Update-grub?

Mar 5, 2011

I was unaware of the difficulties of installing and booting Ubuntu from the "onboard raid" that the NVIDIA nForce chipsets provide. However, I've managed to get it working reliably with one single caveat:

When update-grub builds the grub.cfg, it refers to all of my partitions as follows:

Code:
menuentry 'Ubuntu, with Linux 2.6.35-27-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod part_msdos
insmod ext2
set root='(/dev/mapper/nvidia_caifaefg,msdos5)'

[Code]...

So I'm guessing that the whole nvidia_blah,msdos5 is because of that. However, it doesn't seem to explain why Grub would THINK that would work and it in fact does not work. That's the biggest source of confusion on my part.

My questions are as follows: First off, because as an IT person I want to know: Why does this sort of change work? What does changing that device name change in GRUB's behavior? Is there a setting in /etc/default/grub that would change the way it's naming these RAID devices? Is there a value for this setting that would give me the device names that work, as explained above?

If there is no setting change I can make in /etc/default/grub, could I add a sed command on to the end of update-grub or can I make a modification to one of the scripts in /etc/grub.d? What sort of change would be recommended? How would I preserve this change through later package upgrades that would possibly rewrite these files?

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Ubuntu / Apple :: Cannot Use Keyboard When Booting Up From 10.04 CD

Jun 2, 2010

I've tried Ubuntu awhile ago. I popped the CD then restarted my Mac. Upon restarting I usually pressed the C key. The system boots to the Ubuntu CD but when I get to the language selection thing, I cannot use my keyboard. I had to snag my PC's keyboard from the other room to make it pass through the said window.

Is it normal? I selected the "Try Ubuntu" first to get my feet wet.

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Ubuntu / Apple :: Error Booting 10.04 On PPC?

Aug 2, 2010

after loading kernel we get /pci@f0000000/mac-io@17/ata-4@1f000/disk@0:3,/boot/vmlinux : input/output

Every install does this.

What is it with PPC ubuntu lately? Starting with 9.04 it has been nothing but snake bit. And is there any other mirrors beside britain for PPC it seem frequently unavailble or slow.

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Ubuntu / Apple :: Booting 10.04 On Imac With Osx 10.6

Aug 20, 2010

I just installed the latest version of Ubuntu on my intel-based iMac with OSX 10.6 (Snow Leopard), but I don't know how to bring it up.

I partinioned my hard drive for it. I inserted the CD and pressed C when restarting my computer for it to come up, then I installed it on the partition. It was done installing and said the computer must restart now, so I pressed OK. I got a black screen with a bunch of white text saying something about an error. It was pretty much "frozen" (I didn't know how to get off the screen), so I turned off the power manually by pressing the power button. I turned the power back on, but I get no option for Linux. I tried putting the CD back in, and it boots from the CD but it's still the non-installed version. So I thought maybe it didn't install, so I pressed install again. It said to choose where to install it, but my partition of free space said Ubuntu was already installed on it.

I'm really confused and don't know how to get it to start up when I turn on my computer.

EDIT: Here's some more info about my mac incase you need it:

iMac
OSX 10.6 Snow Leopard
Intel
4 Gb of RAM
250 Gb hard drive (29 Gb partitioned for Linux)

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Ubuntu / Apple :: 10.10 64-bit Not Booting Not Installing?

Oct 11, 2010

I'm stuck with a problem trying to boot an Ubuntu Desktop 10.10 x64 CD into a white Macbook (2.1 gen, Core2Duo ) I've installed rEFIt, and synchronized GPT with MBR - all ok.

But when I insert the cd (works ok, the same CD on a DELL laptop ) and boot it via rEFIt, the computer hangs with this console message

Code:
1.
2.
Boot from Ubuntu CD-ROM:_
And I can't go further... anyone knows ?

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Ubuntu / Apple :: Triple Booting On Mac?

Dec 24, 2010

I have an Intel iMac that has about 500 GB of unused space and I was wanting to install Ubuntu or Ubuntu studio or any Linux distro on about an extra 50 - 100 GB of space. I currently have the iMac with a windows bootcamp partition on it as well. Is it too late to partition the main partition and install Ubuntu on it without having to erase it and reinstall the Mac OS and Windows on it? Also, I wanted to try Ubuntu studio on a live CD, but when I hold C and bring up the preboot environment then I don't see an option to "try Ubuntu without changing anything".

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Ubuntu / Apple :: Can't Get Dual Booting To Work

Jun 27, 2010

I can get ubuntu to work fine on its own (except for sound, a problem for another day), but I can't get dual booting to work.I'm using this page as a guide:URl...I started out with a clean OSX snow leopard install. I ran bootcamp and shrank my 320G hfs+ file system to 160G. I installed rEFIt, and rebooted twice (you don't see the menu after rebooting once). Then I booted from my 10.04 CD, and deleted the partition created by bootcamp using gparted.When I run the installer and tell it to use the largest continuous space, it makes the / file system in partition #5, and the swap partition in partition #5.

I figured that might cause problems with a MBR partition table, so I partitioned manually, and set up / in sda3 and swap in sda4.When I tried to configure the installation of the bootloader, I had a menu of possible places to install it. I picked /dev/sda3, but then the OK button was grayed out.

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Ubuntu / Apple :: Triple Booting On A Macbook Pro?

Nov 18, 2010

I would like to triple boot my Macbook Pro. I don't want to use rEFIt. Although it worked on my iMac, it would randomly not load the OS's sometimes.

1. Is there a way to use Boot Camp?

2. I know how to use Mac with the windows xp bootloader. How can i put Ubuntu in too? I got this thing about taking 512 megabytes of the bootloader grub or something like that but I don't get it.

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Fedora :: Can't Dual Booting With Grub (legacy) - Black Screen Grub Error 27

Jul 31, 2011

is it ever possible to do dual booting with grub(legacy) ever at all!. it is possible provided i take some pain, here is the link of that post [URL] i was coward and weak i didn't try that out then. but i did try it out. now so if u haven't seen the post .... I've installed Fedora 15 desktop(Gnome) with physical Logical volume called vg_fedora lv_root(ext4) ,lv_swap and lv_home(ext4), with 500MB /boot partition and had about 200GB free hard disk space ... so i wanted to install Scientific Linux 6.1 (because our school uses RHEL 6.1)

so, while running the installer I made (added) a logical volume lv_Scientific with ext4 FS and made its mount point (/) and used the MBR /boot which overwrote the Fedora /boot (completely OK and was as expected) i restarted after installation i got SL log in and as per the directions of the thread i copied the boot stanza from grub.conf of fedora 15 (which i already had copied and pasted into a text file and copied it from there)and pasted it into grub.conf of SL you may ask why did i choose same physical LVM too save swap space ... if i had made another physical LVM i had to make another swap ( i like LVM ... its cool)

completely unexpected happened Fedora now boots but not SL when grub starts i get this error 27 unrecognised commad and when i press <enter> i get grub menu with SL and fedora when i press on Fedora it works well i get my fedora login and i did login .. everything works fine but when i press SL it goes to the previous black screen grub error 27

[Code]...

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Ubuntu / Apple :: Drive Will Not Read On TMac After Booting

Mar 21, 2010

Drive will not read on the Mac after booting in Ubuntu!I haven't booted Ubuntu in months (October?), but no hardware changes except for the expresscard. Ubuntu runs nicely in a virtual machine from the Mac side, so I made a fresh VM with Karmic. Couldn't remember the cool apps I had running before (it's been a while), so I booted into Ubuntu to check it out. The HDD was connected and on. (Oops.)It was fine last night on the Mac. I did not notice if it mounted this morning (still in OSX, 10.6.2, Mac sleeping overnight and HDDs on for an unrelated backup). So there is a very slim possibility this has nothing to do with Ubuntu.

Back to Ubuntu, the other external (Firewire 800, HFS+) mounted as usual. Again, I cannot recall if the Fantom mounted. I have not installed drivers for the expresscard/eSATA in Ubuntu (separate driver install is required on the Mac a rarity). I scribbled down the names of the apps I was looking for, and rebooted the Mac to OSX. Where's my HD? Disk Utility sees it as unformatted, and oddly enough, SCSI. If I plug it in via USB, it simply sees an unformatted disk. eSATA is OK with another drive on the Mac.DiskWarrior failed to see the disk entirely with either connection, same in Leopard and even Tiger.Could Ubuntu have confused the partition maps or something? Any thoughts on how I might get it running before I give up and restore the backup?

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Ubuntu / Apple :: Shrink Mac OS X Partition On Dual Booting MBP?

May 28, 2010

After four attempts and diverse partition map problems, I finally managed to install successfully clean versions of both Mac OS X Snow Leopard and Ubuntu Lucid Lynx on my old MacBook Pro C2D (2,1) and a new 320 GB HDD, by following these instructions:[URL]

Now, I've got a big partition for Mac OS X (286 GB) and a small partition for Ubuntu (30 GB, as well as two smaller partitions for grub and swap). However, I'd like to shrink the Mac OS X partition to, say, 35 GB, and use the freed up 251 GB as a shared partition to keep files for access from both OSs. But Mac OS X Disk Utility won't let me resize the Mac OS X partition (and warns that it might not be a smart thing to do, as the disk has been partitioned for Boot Camp, etc).

Is there some way I can resize the partition, or do I have to start all over again?

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Ubuntu / Apple :: PowerPC Booting Into A Black Screen

Jul 17, 2011

I've just tried installing Ubuntu 10.04 on my powerpc. It installed fine, and booted first time ok, but since restarting it just seems to boot into a black screen. My monitor says 'going to sleep mode'

I don't think it's hanging on anything, as I can hear sounds if I play around with the keyboard. Could this be something to do with the resolution being too high? If so, can anyone tell me how I go about changing this?

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Ubuntu / Apple :: Macbook Lost Its Mind Triple Booting?

Feb 1, 2010

Few days back i was searching for triple booting my mac through this ubuntu forum.and i ran into command name bless

it was like : bless /dev/disk0s3 --setboot -- device --verbose

i ran it on the terminal after booting it from a Leopard installation DVD in a hope to run linux on my macbook(macbook white..intel m/c 160gb HD..2 GB RAM) after trying all the stuff and eventually everything has stopped booting neither leopard nor windows. i can see the grub for ubuntu loading up but after selecting the option for ubuntu, ubuntu is also not working.

i was using refit as well.i cannot even boot from my leopard installation dvd..windows that was priorly installed using bootcamp is corrupted too.

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Ubuntu / Apple :: IMac G4 Blank Screen While Booting Into Lucid

Apr 26, 2011

I downloaded Ubuntu Lucid...something onto a cd and I booted into it on my iMac G4. It brought me to a screen saying things like live is default press tab for more options etc and when I just press enter, the screen turns white, loads a few things, then it turns blank and after awhile, I hear the Ubuntu startup sound but my screen remains blank.

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General :: Booting Windows7 For GRUB/ Removing Grub?

Jul 20, 2011

I just formatted the partition that contains fedora 15 using windows.. Now when I attempt to boot my PC the grub bootloader comes up and I cannot boot anything.... The error that I get|| i feel i need a boot command to boot boot win7 from grub... grub propmts me " minimal bash-like line editing is supported. for the first word tab possible list a possible commands completion anywhere else tab list

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Ubuntu / Apple :: Blank Screen When Booting From Kubuntu Partition On Macbook?

Feb 3, 2010

I am trying to install kubuntu on my macbook. I am able to boot from the CD and install fine, but when I try to boot from the linux partition the cursor blinks for a while, then the screen goes blank.I have used the rEFIt partition utility, but when I try to reinstall the grub bootloader as described here: it says "sudo: grub: command not found"When it try "grub", it says:"The program 'grub' is not currently installed. You can install it by typing:sudo apt-get install grub"

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Ubuntu / Apple :: External Hard Drive And Booting It From Refit Work?

Aug 12, 2010

would putting ubuntu on an external hard drive and booting it from refit work? and would i was starting up my imac 11,2 my ipod was bootable for some reason?

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Ubuntu / Apple :: Manual Installation On Already Created Partition To Create Dual Booting PowerMac?

Jul 15, 2010

I have booted from the .iso cd I made on my Mac last night and was tempted to install it on a 6gb partition that I have on my main HDD but was a bit scared to go past the fourth (or so) step in manual installing where I pick that partition and *do what?* Is it going to install the OS on that partition and leave everything else alone to give me a dual booting PowerMac? It doesn't quite say. I am fearful of screwing up my little ol' machine. Can anyone direct me to something that gives a step by step in manual installation on an already created (HFC+) partition to create a dual booting PowerMac?

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Hardware :: Create Boot CD For Booting External Disks On An Apple IMac?

Apr 2, 2010

Is it possible to create a boot CD to boot external volumes on an Apple iMac 7.1 (which has an older firmware version and cannot boot external disks, unlike the MacBook Pro 5.1 which can do it, at least with grub-legacy which is all I'll ever use until EFI boot becomes available). There is some promising stuff on www.pendrivelinux.com, and I'll try it, but the instructions are for Windows, and I am not sure how to translate the menu.lst entry to linux (I suppose it would have to be entered in the "automagic" section). Of course I don't want to create a bootable flash drive but to use my external volumes that already boot on the MacBook Pro without altering them, except for installing the ATI video driver (but I have no problem booting in low graphics mode).

Until karmic there was a trick to make the iMac mistake the external volume for an internal one (the root partition had to have the same UUID as the internal root partition), but this does not seem to work for lucid. Anyway this UUID trick is dirty and causes problems when you want to edit the internal partition (which is the point of the external boot - you get a customized maintenance environment that boots much faster than the CD).

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Ubuntu / Apple :: Grub/rEFIt Can't Run A Live CD

Mar 16, 2010

I decided that I wanted to take Arch for a spin for the next week or so (I've had Ubuntu installed for a while) and so I thought the logical thing to do was to erase my partitions and start over with a new live cd...

Well.. that didn't work. I tried to do it from Disk Utility in OS X which succeeded in deleting most everything... EXCEPT grub is still in the mbr (or whatever it runs from through rEFIt). But all I see when I start up in the non-OS X partition is:

Code:
GRUB

At any rate, no Live CDs work, I can't delete the partitions from OS X (including after booting up from the OS X Install disk).

If I hit F1 I can get the "grub>" prompt. But I can't figure out how to launch a live cd. To my knowlege, there's not a "bios" for rEFIt where I can force it to boot from CD, is there?

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Ubuntu / Apple :: Remove GRUB And Just Use REFIt

Jul 21, 2010

I have OS X, Ubuntu 10 x64 and Windows 7 x64 installed on my Macbook Pro new unibody. Right now when I choose Windows or Linux in the rEFIt boot menu both options take me to the GRUB menu, and I can boot everything but it's a bit redundant and annoying.

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Ubuntu / Apple :: Does Kubuntu 11.04 Have Efi Support On Its Grub

Jul 28, 2011

I currently have kubuntu 11.04 on my laptop harddrive that is in an external enclosure. it is on the outside of the machine and connect to the computer via USB.It works fine on my windows machine and I love the fact I could also plug it into my kubuntu machine at home and use it as a regular harddrive too. Although my new job basically wants me to use a mac. Apparently you need something called an efi support on my grub so here are the questions:

Does kubuntu 11.04 have efi support on its grub i.e. can I plug my hard drive with my kubuntu on via USB to a mac and boot from there? If not how could I get one? Also does getting efi support make any difference when I plug it into my kubuntu machine at home? So can I back up my data as I used to?(by simply plugging it in)Could I still plug it into my windows machine as before and work if I get efi support?

p.s. If you have trouble with heavy laptops give external harddrives a go its like carrying an ultra light linux machine (with all your data in it)!

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Ubuntu / Apple :: Mac Mini And MBR Only - Keyboard Not Working In GRUB?

Jun 14, 2010

I set up my Mac Mini to dual boot Windows 7 and Ubuntu. I started with Windows only, and allowed it to rewrite the partition table (GPT/MBR). When I tried to install Ubuntu, it didn't see Windows until I used Gdisk to delete the GPT portion. Then it recognized the Windows partition and installed Ubuntu as per normal. Now when I boot, I get GRUB and the option to boot Ubuntu or Windows 7. The only problem is that the USB keyboard (Aluminum or standard PC keyboard) doesn't work until an OS is loaded.

Is this an EFI problem? I'm starting to think that EFI is required for USB keyboard support at bootup since it replaces the BIOS functionality. Is this even remotely accurate? Did I mess things up by not going the rEFIt route? I'm not sure what I can do at this juncture as I can only boot into Ubuntu.

I could install OS X, rEFIt, then Windows and Ubuntu, keeping rEFIt as the boot loader, but if there's an easy solution I'd like to avoid that. More importantly, I'd like to understand what's going on.

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Ubuntu / Apple :: Refit AND Windows Both Boot To GRUB?

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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Ubuntu / Apple :: GRUB On Dual Boot Macbookpro 5,5?

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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Ubuntu / Apple :: Windows 7 Not Showing Up Under Grub For Macbook Pro

Jan 23, 2011

I am trying to triple boot osx, win7 and ubuntu 10.10 on my macbook pro. This is the way I did it:

-Installed osx and created 2 partitions in disk utility, one for osx and another formated as dos fat to manually hybritized my drive and allow for windows installation (the new bootcamp is currently messed up, so can't do it that way).

-Installed win7 by bio booting the cd, and deleting the formatted partition (dos fat) and creating a new one via win installation.

-Installed ubuntu by bios booting the cd and creating its own partition in setup.

Now, when I turn on my macbook and press alt, 2 icons come up, mac and windows (so good so far!). But when I go into the windows option, grub loads and I see 5 entries:

-Ubuntu
-Ubuntu safe mode
-Memtest
-OSX 32 bit
-OSX 64 bit

Obviously osx is not going to boot under bios boot. But where is win7 that should be in the list?

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