Ubuntu / Apple :: Can't Boot Back Into OSX?
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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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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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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Dec 2, 2010
I have been given an Apple Ibook that wont boot
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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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Nov 9, 2010
If I leave my Macbook Pro 7,1 updating and come back to it a while later and I press a button to turn the screen saver off, it just has has a black screen a cursor in the corner and nothing else. It hasn't automatically rebooted, I know, because I dual boot and it would've booted into OS X. When this happens I can usually press ctrl+alt+F2 or something and I get a command line prompting me to login but if I try and type nothing appears at the login prompt. The only way I can recover from this is to hold down the power button to turn it off.
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Mar 24, 2010
I am trying to boot a cd on an iMac G3 and I can't get it to boot. (hence the question)
I have tried pressing the 'c' key, the option key, the control key, the apple key, etc, etc, etc.
I have looked around Google and it showed me an old thread on the forums the guy figured it out but he never said what he did.
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Aug 12, 2010
I downloaded ubuntu not knowing it was totally take over my Mac. I'm nervous it may have deleted everything off my memory and now idk how to get it back! When I start it up it boots with ubuntu only! How do I get it to boot up the Mac os? And did installing this delete everything from my harddrive/partition!?
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Nov 30, 2010
so i followed the guide to installing ubuntu on my mac i have an core 2 duo processor so i got 9.04 X64 put it on a cd and the cd wouldn't boot at all, so i tried again, and again, and re-downloaded.... not i have tried 10.10 X64, 9.04X64, 9.04X86 and none of them boot past the screen that asks me if i want to install it or whatever, i tried checking for defects on the cd but that didn't even boot.
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Jan 2, 2010
I don't want to dual as I don't want to screw up my computer. I have a PowerPc mac.
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Jan 18, 2010
I just installed Xubuntu on my old iMac G3 and I booted it and when I try to log in it says "Authentication Failure" I'm 99.9% positive I'm using the right username/psswrd, does anybody know how to change it or over ride the login part all together?
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Jan 22, 2010
I installed ubuntu 9.04 but no boot at all (on a powermac G4 cube)
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Jan 29, 2010
I am trying to put ubuntu an old imac with osx that a former customer gave me. I am not extremely well versed in Apple products but have been doing research intoy current problem. I have tried just putting in the ubuntu shipit disc I have, along with downloading and burning 9.10 text based and have not been able to get it to install. I have tried holding 'c' when rebooting, holding 'option' while rebooting it only gives me the choice of booting from osx), and holding 'control, option, apple, delete' as well to no avail. I then tried downloading Virtualbox and mounting the dmg and found out that my imac is not letting me mount any dmg's at all. Any guidance? Can I take out the harddrive and hook it as a slave to my pc and somehow install ubuntu that way and put it back in the imac? All I want is for the imac to be useful again as I was trying to make it into a stand alone dvd player.
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Mar 3, 2010
I have a very urgent problem, its so bad I dont know what to do...I tried to install a dual boot, (os x and ubuntu). I could always boot with the Ubuntu CD, but now I can try everything (format whole HD to *free space* ) press "C" at start up, press "alt" and choose "windows" (ubuntu cd) everything does not help even resettingPRAM with alt+P+Rwhat I get is a BLAC SCREEN with blinking underline (always)Does anyone know what I can do to make my mac again able to install a ubuntu, it seems I ahvessed up my irmware..?? I just dont know how? (I once overwrote my MBR according to a thread here... (but I reformated now the whole HD to freespace with GUID partition table.....but still blinking underline when I want to boot the ubuntu 9.1 cd.
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May 22, 2010
On a MacPro4,1 with two CPUs and an ATI4870 graphics card, none of the ubuntu cds boots correctly. With the latest 10.04 releases (server and desktop) some boot messages appear on screen, but after some USB initialisations everything halts.
9.04 does not even start loading the kernel. Up to now I tried the 32bit variants.
Has anybody here gotten a similar configuration to work, I am talking about a MacPro not a MacBook Pro.
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Jun 9, 2010
I keep running into things that say "Boot from the live CD" and I'm trying to expand one of my hard drive partitions right now using gparted, and I need to boot from the live cd.... but I can't seem to figure out how to do that.
Is this an easy thing?
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Jul 26, 2010
I have successfully installed ubuntu on a seagate goflex hd and can get it to boot with using a usb cable and refit on my mac. But I cannot get it to boot with a firewire cable and I have not seen any instructions on how to do this with an intel imac, only a ppc.
The mac does recognize the external hard drive when I hold the option key when I turn on the mac, but I get a "no bootable device found" error once I select it...same thing happens with refit and firewire cable. Any ideas on how to get this to work? I am ok with running it via usb cable, but would like the firewire option.
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Oct 22, 2010
I have ubuntu 10.04 installed on my MacBookPro7,1 (dual boot with reffit). Everything works fine. Today I closed my laptop and open it later again and saw a black screen with a blinking cursor. I was not able to send any keys to it. So I powered down (off button) it.
After Booting It I saw some kernel message, no errors, and then it stops and everything is freezed. Again no keystrokes can be send. The last kernel message is something about scsi. I tried to remove the "recordfail" in the grub2 menu but it doesn't help.
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Feb 23, 2011
10.04 was working quite well on my Imac G5 with Yaboot for few weeks.
I tried to boot macOSX which failed and returned to Ubuntu which was stioll booting OK as I did not touch the linux part of the yaboot conf.
But Now It won't boot anymore :
- It seems to boot OK till X launching.
- then I get a Black Screen and None of My PC Keyboard shortcuts can get to another tty.
My Next try is to get a PPC LIveCD and try to see if Yaboot.conf is OK.
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Jun 6, 2011
I cannot get ubunto 10.04 to boot on my 1.2 ghz 256 mb ram powerpc ibook g4. I downloaded/ burned the live disc and it worked just fine in my powerpc imac g5 (both g4, g5 were supported I believed)It gets to the screen where I select my image to boot, and that works by it says after failing to load for several minutes: "144.9818211 b43-phy0 ERROR: firmware file "b43-openucode.fw" not found you must go to URL... to download to correct firmware for this driver version".I've gone to the website and found a 43 driver and am not sure how to update/ install it...
the hard drive (30 gb) is shot, kaput. currently no os, though I would like to have a firewire drive with tiger or leopard, and potentially a linux partition if even possible. So here are my biggest questions: can any version of ubunto boot on my ibook from a firewire drive? Can i create a dvd that boots in my ibook that not only has the operating system but also some lightweight application on the dvd so that I can run linux just from the dvd as a toy?I'm not replacing the internal hard drive, it's too costly and not worth it when I have several other working macs running snow leopard already.
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Aug 2, 2011
I tried installing ubunutu on my macbook pro (7,1 I believe, with lion 7.2 installed) today and ended with result of a nonbooting computer, the ubuntu partition won't boot either! I'll try to explain all the steps.
1. I first installed rEFit.
2. Next I booted from a burned copy of the latest release of ubuntu on a dvd.
3. I created a partition of 5120 mb from the freespace on my harddrive, I made sure to leave the mac partition intact.
4. I finished the install, it said to ejct disc and hit enter, I did, the computer froze. I ended up having to hold the power button.
5. The computer just showed a white screen. It wouldn't boot to the rEFit screen or anything. It just resulted in falling back to lions recovery partion. Disc utility couln't verify ubuntu's or lion's partitions.
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Aug 12, 2011
where I can find details on how to dual booth OSX 10.6.8, and Ubuntu 10.10 on Mac Mini 2010?
I have the partition already setup for Ubuntu - and have already installed refit - but when I try and boot from the Live CD, the screen goes into power save mode and I can't see anything.
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Jan 27, 2010
I've installed Kubuntu (9.10 I think) on my Mac Mini 3.1 . So I have an OS X partition and an Kubuntu partition.I got the standard no bootable device message.I cannot boot into OS X (I dont want to get into OSX anyway) or Kubuntu.I booted a rEFIt disc and synced the GPT and partition table.Then I booted onto a Kubuntu live cd to re-install grub into the Kubuntu partition. I re-installed it and tried rebooting. I got the grub menu, but must have missed a setting because it was the grub prompty. So I reboot to try to find the values to put into the prompt (kernel location, initrd location). But when I try to boot into the Kubuntu live cd it freezes just after ISOLINUX appears (only the top line for ISOLINUX shows up).
I tried going back into rEFIt, but it tells me the GPT and MBR are synced and it won't do anything.If I load rEFIt and select linux, it loads to saying no bootable device -- insert boot disk....If I load rEFIt and select the partition tool it tells me they are already synced, if I select Linux after doing that it will freeze with the tux icon in the middle of the screen.It is obvious I need to do the next step which is install Grub, but I can't boot off any live cds! I have tried Kubuntu, System rescue cd, gparted live cd, os x install cd, an osx corialis boot cd I made, an older Kubuntu CD. They all freeze just after ISO Linux starts up or the OS X ones give me a do not enter sign.
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Jan 31, 2010
I might be going Back To linux after i relearn a bit and understand it more. Now i need to understand something first, How can i get Linux to boot with EFI and not Emulated BIOS?
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Feb 21, 2010
I can't install any flavour of Ubuntu 9.10 onto my new iMac G3. Here are its specs:
iMac G3 New World (Indigo)
350MHz G3 Processor
192MB RAM
6GB Hard Drive
Slot Loader (CD only - not DVD)
Mac OS 10.3 Panther
The drive does work - I've played music from CDs on it, and it does allow me to view PDF files stored on data CDs. I can even view the Ubuntu CD through the Finder on the desktop. It just really doesn't want to boot from the CD.
I've tried multiple Linux distributions (all of them PPC compatible).
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Mar 15, 2010
Model:MacBookPro1,1
Intel Core Duo 2,16 GHz (32 bit)
OS X 10.6.2
Boot ROM-version: MBP11.0055.B08
SMC-version (system):1.2f10
2 gb ram
I've tried this guide: [URL] to USB Stick
with both the standard 9.10 32 bit cd and the netbook remix. when I try to boot and hold alt the only partition that appears is the os x one. so no usb.
the cd reader is broke. that's why I'm trying via usb.
edit: its a usb stick btw, 16 GB that I'm trying to boot from.
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Mar 25, 2010
I want to install Ubuntu on a PPC iMac.It is running 10.2.8.I'm looking for a ppc version of Ubuntu that will fit on a CD-R, the iMac has no DVD reader.Where can I find this?Also, I'm not sure how to get the iMac to boot from disc. It doesn't seem to respond to holding 'c'. Also, when I hold 'option' during boot up it shows me a screen with a picture of a lock, it wants me to fill in a password, but my user's password won't work.
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Mar 29, 2010
I'm trying to reinstall Mac OS X on a single boot Linux powerbook, but have no idea what to do because to my understanding ubuntu wont read a .DMG file, does this means that I have to burn it? Or maybe convert into an .ISO and then burn? Or can it be done from within the machine from an .ISO?
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May 14, 2010
I downloaded and burned the 32-bit desktop edition of Lucid Lynx (ubuntu-10.04-desktop-i386.iso) but can't boot it on my MacBook model 5,2. I've installed rEFIt. When I boot from the CD holding down the C key on hearing the boot chime, Ubuntu doesn't boot. A purple background with a keyboard and the accessibility icon shows up, then the screen goes black with a blinking underscore at the top left corner. After a little while, the marker disappears and the screen goes black. After that, nothing happens. I left my MacBook that way for a couple of minutes, but still nothing happened. Any clues about what the problem may be? Should I wait longer at the black screen? I burned the CD at low speed (16x) and verified the disc after burning.
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May 16, 2010
I'm currently trying to mount a hfs partition at boot as part of my quest to have a shared music folder across ubuntu and OSX. Here's the output of fdisk -l
Code:
WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.
[code]...
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