Cannot boot after recovering a FileVault 2 protected disk

I used Lion's new recovery HD partition to restore a four day old Time Machine backup. However, two days ago I enabled FileVault 2, which is probably the cause of the fact that I cannot boot my mac anymore. As the whole disk is locked, I cannot access the recovery partition either. Disk Utility of Snow Leopard install DVD doesn't support unlocking the partition, it is grayed out and therefore I'm not able to mount it. I honestly don't know yet how I can fix this problem. Can you help me?

Unlocking worked using the DVD, but I could never really make it bootable anymore. Reinstallation of Lion on the existing partition didn't work either. Just FYI, when trying to make the disk the startup disk it give me the following error: 'Building boot caches on boot helper partition failed'. The only solution that worked and was good enough for me was to delete the partition, reinstall lion and restoring time machine data on the new installation afterwards.

Similar Messages

Mac pro cannot boot after upgrade to 10.8.3

My Mac Pro cannot boot after upgrade to 10.8.3. Anything firmware I can reset or how should I do.
I am using a early 2008 Mac Pro

Can you boot into safe mode? http://support.apple.com/kb/ht1455
If not, how about Recovery? http://support.apple.com/kb/ht4718
If you can, run Disk Utlity and repair the disk. You can try rebooting normally, but I would just reinstall after quitting Disk Utility.

Macbook Pro cannot boot after Yosemite install

I just (tried) to upgrade to Yosemite (from latest version of Mavericks) on a brand new Macbook Pro. It installed the OS, I got to type my iCloud information etc - and I saw a glimpse of the desktop, but then:
I got the Black screen of death (the one where you can only reboot with text in different languages).
Then, when rebooting I got Apple logo + plus a progress bar (see attachment)
And then a stop sign. (see attachment)
I have tried holding down power button and restart manually 5 times - no luck. The mac is stuck, and I cannot boot.
Please help - I need to get back to work.

Had the exact same problem on my Macbook Air. Apple Support had me boot with Command-R and repaired disk in Disk Utility. Everything seemed fine so they told me to reinstall, which I did. After a few hours I went back to the screen and it asked me to type in my password. After that is tries to install some more and then I get the following message:
OS X could not be installed on your computer.
This core storage operation is not allowed on a sparse logical volume group.
Quit the installer to restart your computer and try again.
Each time I try to reboot I get the same message.

HP EliteBook 8440p cannot boot after BIOS reset

hey there . i got a problem about my elitebook 8440p . i try to reset my bios to default. then I restart my laptop. After it was restarted, it cannot boot. Only the led lights blink. the i goes off then it goes on again. What should I do? Please someone help me

@NewbieTechy
‎Thank you for using HP Support Forum. I have brought your issue to the appropriate team within HP. They will likely request information from you in order to look up your case details or product serial number. Please look for a private message from an identified HP contact. Additionally, keep in mind not to publicly post ( serial numbers and case details).
If you are unfamiliar with the Forum's private messaging please click here to learn more.
Thank you,
Omar
I Work for HP

Cannot Boot Windows 8 x64 Startup Repair Disk

Hello, I have a Toshiba Laptop Satellite L875D-S7332 Part No. PSKFQU-008003 With Windows 8 x64 Preinstalled. I created a Startup Repair Disk with a DVD. My problem is i cannot boot from this DVD. I changed the Bios to boot from DVD but it still doesn't work! Can Anyone help me? Thank You, heaven5733

Have the recovery disc in dvd drive restart and press f12 at startup then select optical disc drive.
S70-ABT2N22 Windows 7 Pro & 8.1Pro, C55-A5180 Windows 8.1****Click on White “Kudos” STAR to say thanks!****

MacBook won't boot after trying to repair with Disk Utility. Cannot boot in Safe Mode. Just powers down after about 5 minutes. Apple Hardware Test says error 4SNS/1/40000001:IG0C-0.265 But I cannot find anything on the net about it. MacBook 4,1 Intel.

Hello Everyone,
I am in dire need of assistance I am hoping someone could provide. I have a MacBook 4,1 with Intel Core 2 Duo processor 4GB Ram. It is taking over 10 minutes to boot up past the gray apple screen when I turn it on. First I cleared the PRam (?) then I checked the disk using Disk Utility Verify, and it said the disk needed repairs. So I ran the disk repair and it said it was unable to fix the errors on the HD.
I did a little research and tried booting into the Single User mode, then running /sbin/fsck -fy. It said that it found errors but could not fix them. I ran it two more times as suggested and got the same result each time. I then tried rebooting and now instead of taking 10 minutes to boot up, it takes about 5 minutes on the gray apple screen and then just turns off. I started in Verbose mode to try to troubleshoot the error and it appears the last thing to come across the screen before power down is a message "Apple Yukon 2: RxRingSize <= 1024....etc".
I decided next I would run the Apple Hardware Tester. The test came back with an error code "4SNS/1/40000001:IG0C-0.265". I am very good at searching the web but I could not find any errors that had the IG0C or IGOC or any combination at the end, but plenty of 4SNS/1/40000000(1) errors with different endings. From what I can tell people are saying anything with 4SNS/1/4000000 is a logic board failure, but this computer was literally just booting this morning until I did the /sbin/fsck -fy.
Any suggestions are welcome and appreciated.
Thank you for your time.

You've a couple of issues .... when Disk Utility tells you it can't repair a drive, if the error is a soft error, like an invalid tree or node, Disk Warrior (or TechTool Pro) can handle it. However, if Disk Warrior (or TechTool Pro) can't handle it, you can erase and write zero's to the hard drive and restore to it, or you can buy a new hard drive. Sometimes running SMART Utility can provide additional insight into the health of the hard drive.
THe 4SNS error is a sensor error. You could install iStat Pro to see if something is indeed getting too hot or remaining room temp or less. You may need to take it into an Apple shop so they can use their thermal diagnostics to test and isolate it further.

Cannot boot after a migration to systemd in OpenVZ

EDIT: I "solved" my problem, and I doubt this thread will ever help anybody. You're warned.
Hello,
Earlier today, my Arch install that was still running with initscripts (and without the last filesystem/bash upgrade) suddently rebooted, and that broke a certain number of things (services weren't starting anymore, etc.). I figured I had waited too long before migrating to systemd for good, and therefore I followed the migration guide on the Wiki, added the "init=/usr/lib/systemd/systemd" kernel parameter and rebooted again.
Sadly, ps -p 1 was still showing init instead of systemd. After a few more tries, I installed systemd-sysvcompat (thus replacing the sysvinit package), and rebooted again. That last reboot failed. Now OpenVZ stops suddently with the following messages:
[root@ks /]# vzctl start 106
Starting container ...
vzquota : (warning) Quota is running for id 106 already
Container is mounted
Adding IP address(es): ***
Setting CPU units: 1000
Setting CPUs: 2
/bin/bash: line 72: /bin/cp: No such file or directory
ERROR: Can't copy file /etc/rc.conf
Unable to start init, probably incorrect template
Container start failed
Stopping container ...
Container was stopped
vzquota : (error) Quota off syscall for id 106: Device or resource busy
vzquota off failed [3]
I tried to chroot in the VM folder and reinstall sysvinit, but that was too late:
pacman -U /var/cache/pacman/pkg/sysvinit-2.88-9-x86_64.pkg.tar.xz
error: could not open file: /etc/mtab: No such file or directory
error: could not determine filesystem mount points
error: failed to commit transaction (unexpected error)
Errors occurred, no packages were upgraded.
It looks like I can't use pacman in a chroot. The host OS is not running Arch so I cannot use pacman with the --root flag.
I'm running out of ideas. Any help would be really appreciated...
Thank you.
Last edited by Vlavv (2013-06-27 00:26:12)

The problem with the chroot options is that I don't have the root privileges on the host machine. I was only able to access that chroot thanks to a kind administrator, but I couldn't ask too much either.
OK, so I've done some Ugly Things, messed with the contents of the sysvinit package archive manually to get the right files at the right places, and eventually managed to boot my VM and get all the stuff working. I'm certainly not proud of myself, but at least things are working again for now. I'll do a clean reinstall later. Thank you for the suggestion, and sorry for the noise.
Cheers.

Cannot boot after 10.7.5 update (MacPro1,1 mid-2006)

I have tried to do the update on my MacPro for the last few weeks. Each time, it fails and after reboot, it goes into the Apple Utilty boot. At that time, I need to restore a backup from my time machine. I checked for RAID, and under system report, there is no RAID in the MacPro.
"This system doesn't contain any supported hardware RAID devices. If you installed hardware RAID devices, make sure you installed them properly."
What else do I need to do in order to get this update to work? The computer is almost seven years old and is out of warranty and extended warranty.

format a disk drive and do a clean install of Lion.
And buy a copy of carbon copy cloner and start using that...
Using Cloning as a Backup Strategy
http://www.macupdate.com/app/mac/7032/carbon-copy-cloner
http://www.bombich.com/software/updates/ccc-3.5.html
OS X Lion Install to Different Drive
How to create an OS X Lion installation disc MacFixIt
Migration Assistant Update for Mac OS X Snow Leopard
http://www.apple.com/support/lion/installrecovery/
Create an OS X Lion Install disc
http://reviews.cnet.com/8301-13727_7-20080989-263/how-to-create-an-os-x-lion-ins tallation-disc
How to clone your system:
http://macperformanceguide.com/Mac-HowToClone-backup.html
http://macperformanceguide.com/Mac-HowToClone.html
http://www.macupdate.com/app/mac/7032/carbon-copy-cloner
http://www.macperformanceguide.com/blog/2012/20120711_2-MacPro-internal-clone-ba ckup.html
General purpose Mac troubleshooting guide: Isolating issues in Mac OS X
Creating a temporary user to isolate user-specific problems: Isolating an issue by using another user account
Identifying resource hogs and other tips: Using Activity Monitor to read System Memory and determine how much RAM is being used
Starting the computer in "safe mode": Mac OS X: What is Safe Boot, Safe Mode?
To identify potential hardware problems: Apple Hardware Test
General Mac maintenance: Tips to keep your Mac in top form

Cannot Boot after software update!

I just updated to the latest Mac update and after restarting it would not boot! The white screen appears with the loading bar for a few seconds (approx 15) and it restarts again, and it keeps on happening on and on again.
I tried using the Disk Utility (via installation DVD) to Repair my Mac HD but with no avail, it even says my HD is apparently OK. Then I came across something saying to delete all Cache maybe that helps (which made sense at the time because I had a Dock problem a few days ago and deleting the Cache fixed it) so I did.. and for some reason now I can't even use Disk Utility anymore.. it won't read my Keyboard shortcuts (pressing C during startup does nothing, so as any other shortcut I've tried [cmd+s, cmd+v, shift])
Please help! I need my laptop urgently!

kamasheto wrote:
I just updated to the latest Mac update and after restarting it would not boot! The white screen appears with the loading bar for a few seconds (approx 15) and it restarts again, and it keeps on happening on and on again.
I tried using the Disk Utility (via installation DVD) to Repair my Mac HD but with no avail, it even says my HD is apparently OK. Then I came across something saying to delete all Cache maybe that helps (which made sense at the time because I had a Dock problem a few days ago and deleting the Cache fixed it) so I did.. and for some reason now I can't even use Disk Utility anymore.. it won't read my Keyboard shortcuts (pressing C during startup does nothing, so as any other shortcut I've tried [cmd+s, cmd+v, shift])
Please help! I need my laptop urgently!
Welcome to Apple Discussions.
Reboot into the Safe mode - hold down Shift on reboot. At the login screen click restart.
This will clear caches and run fsck on the HD.
See if the system reboots normally after this.

Macbook cannot boot after Time Machine full restore

I successfully did a full restore of my Macbook and hit the restart button when prompted, but now my laptop cannot get past the first screen with the grey apple and the spinning gear.
What gives?

Maybe I should ask a different question.
After doing this full restore would it be hazardous to my machine to force it to turn off (holding the power button for 5 secs) then trying to boot it up again?

Cannot boot after burning the Lion install image to DVD or USB

No Lion install has been performed after the download. I tried burning the image InstallESD.dmg to a DVD, and also restored the image to a USB drive. The results are the same when I hold down the option key upon restart and select either the DVD or the USB drive. I get the gray linen screen while the little circle of dashes spins, and two pictures alternate forever. A picture of a trackpad (with an arrow pointing to the power button) followed by a picture of what looks like a cpu tower, again with a switch in the upper right corner looking like a power button. My trackpad and Mac Pro are obviously powered on, so what is wrong? Any ideas?

Works fine following these DVD boot directions made for the same model of Mac, perhaps your disk isn't good or you missed something.
http://eggfreckles.net/notes/burning-a-lion-boot-disc/
http://www.yourdailymac.net/2011/06/how-to-create-a-bootable-mac-os-x-lion-insta llation-usb-stick-or-external-hard-drive/

System cannot boot after last update

I think that problem in display detection.
X server log file:
[ 26.434]
X.Org X Server 1.16.1
Release Date: 2014-09-21
[ 26.434] X Protocol Version 11, Revision 0
[ 26.434] Build Operating System: Linux 3.16.1-1-ARCH x86_64
[ 26.434] Current Operating System: Linux black 3.16.4-1-ARCH #1 SMP PREEMPT Mon Oct 6 08:22:27 CEST 2014 x86_64
[ 26.434] Kernel command line: BOOT_IMAGE=/vmlinuz-linux root=UUID=5db39538-f615-41e7-a67f-49b03b6a24be rw quiet
[ 26.434] Build Date: 21 September 2014 10:53:13AM
[ 26.435] (II) Module ABI versions:
[ 26.435] X.Org ANSI C Emulation: 0.4
[ 26.435] X.Org Video Driver: 18.0
[ 26.435] X.Org XInput driver : 21.0
[ 26.435] X.Org Server Extension : 8.0
[ 26.436] (EE) systemd-logind: failed to get session: PID 531 does not belong to any known session
[ 26.436] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 26.438] (--) PCI: (0:0:2:0) 8086:0122:1043:844d rev 9, Mem @ 0xfb400000/4194304, 0xb0000000/268435456, I/O @ 0x0000f000/64
[ 26.438] (--) PCI:*(0:1:0:0) 10de:0600:1043:8268 rev 162, Mem @ 0xfa000000/16777216, 0xc0000000/268435456, 0xf8000000/33554432, I/O @ 0x0000e000/128, BIOS @ 0x????????/131072
[ 26.438] (WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
[ 26.438] (II) LoadModule: "glx"
[ 26.438] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 26.447] (II) Module glx: vendor="NVIDIA Corporation"
[ 26.447] compiled for 4.0.2, module version = 1.0.0
[ 26.447] Module class: X.Org Server Extension
[ 26.447] (II) NVIDIA GLX Module 343.22 Thu Sep 11 15:55:13 PDT 2014
Is problem in xorg server or nvidia driver? I don't know what to do.

Trilby wrote:
The system certainly boots - you just cant start X it would seem.
What was updated? How do you start X? Is that the full log, it looks like it has been cut off?
Yes, system starts but I can only work through ssh. Here is the last full log:
[ 26.918]
X.Org X Server 1.16.1
Release Date: 2014-09-21
[ 26.918] X Protocol Version 11, Revision 0
[ 26.918] Build Operating System: Linux 3.16.1-1-ARCH x86_64
[ 26.918] Current Operating System: Linux black 3.16.4-1-ARCH #1 SMP PREEMPT Mon Oct 6 08:22:27 CEST 2014 x86_64
[ 26.918] Kernel command line: BOOT_IMAGE=/vmlinuz-linux root=UUID=5db39538-f615-41e7-a67f-49b03b6a24be rw quiet
[ 26.918] Build Date: 21 September 2014 10:53:13AM
[ 26.918]
[ 26.919] Current version of pixman: 0.32.6
[ 26.919] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 26.919] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 26.919] (==) Log file: "/var/log/Xorg.0.log", Time: Tue Oct 14 21:33:08 2014
[ 26.919] (==) Using config file: "/etc/X11/xorg.conf"
[ 26.919] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 26.919] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 26.919] (==) ServerLayout "Layout0"
[ 26.919] (**) |-->Screen "Screen0" (0)
[ 26.919] (**) | |-->Monitor "Monitor0"
[ 26.919] (**) | |-->Device "Device0"
[ 26.919] (**) |-->Input Device "Keyboard0"
[ 26.919] (**) |-->Input Device "Mouse0"
[ 26.919] (==) Automatically adding devices
[ 26.919] (==) Automatically enabling devices
[ 26.919] (==) Automatically adding GPU devices
[ 26.919] (WW) The directory "/usr/share/fonts/OTF/" does not exist.
[ 26.919] Entry deleted from font path.
[ 26.919] (==) FontPath set to:
/usr/share/fonts/misc/,
/usr/share/fonts/TTF/,
/usr/share/fonts/Type1/,
/usr/share/fonts/100dpi/,
/usr/share/fonts/75dpi/
[ 26.919] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 26.919] (WW) Hotplugging is on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled.
[ 26.919] (WW) Disabling Keyboard0
[ 26.919] (WW) Disabling Mouse0
[ 26.919] (II) Loader magic: 0x818d80
[ 26.919] (II) Module ABI versions:
[ 26.919] X.Org ANSI C Emulation: 0.4
[ 26.919] X.Org Video Driver: 18.0
[ 26.919] X.Org XInput driver : 21.0
[ 26.919] X.Org Server Extension : 8.0
[ 26.920] (EE) systemd-logind: failed to get session: PID 543 does not belong to any known session
[ 26.920] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 26.921] (--) PCI: (0:0:2:0) 8086:0122:1043:844d rev 9, Mem @ 0xfb400000/4194304, 0xb0000000/268435456, I/O @ 0x0000f000/64
[ 26.921] (--) PCI:*(0:1:0:0) 10de:0600:1043:8268 rev 162, Mem @ 0xfa000000/16777216, 0xc0000000/268435456, 0xf8000000/33554432, I/O @ 0x0000e000/128, BIOS @ 0x????????/131072
[ 26.921] (WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
[ 26.921] (II) LoadModule: "glx"
[ 26.922] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 26.928] (II) Module glx: vendor="NVIDIA Corporation"
[ 26.928] compiled for 4.0.2, module version = 1.0.0
[ 26.928] Module class: X.Org Server Extension
[ 26.928] (II) NVIDIA GLX Module 343.22 Thu Sep 11 15:55:13 PDT 2014
[ 26.928] (II) LoadModule: "nvidia"
[ 26.928] (II) Loading /usr/lib/xorg/modules/drivers/nvidia_drv.so
[ 26.928] (II) Module nvidia: vendor="NVIDIA Corporation"
[ 26.928] compiled for 4.0.2, module version = 1.0.0
[ 26.928] Module class: X.Org Video Driver
[ 26.928] (II) NVIDIA dlloader X Driver 343.22 Thu Sep 11 15:34:47 PDT 2014
[ 26.928] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[ 26.928] (++) using VT number 7
[ 26.940] (II) Loading sub module "fb"
[ 26.940] (II) LoadModule: "fb"
[ 26.940] (II) Loading /usr/lib/xorg/modules/libfb.so
[ 26.940] (II) Module fb: vendor="X.Org Foundation"
[ 26.940] compiled for 1.16.1, module version = 1.0.0
[ 26.940] ABI class: X.Org ANSI C Emulation, version 0.4
[ 26.940] (II) Loading sub module "wfb"
[ 26.940] (II) LoadModule: "wfb"
[ 26.940] (II) Loading /usr/lib/xorg/modules/libwfb.so
[ 26.941] (II) Module wfb: vendor="X.Org Foundation"
[ 26.941] compiled for 1.16.1, module version = 1.0.0
[ 26.941] ABI class: X.Org ANSI C Emulation, version 0.4
[ 26.941] (II) Loading sub module "ramdac"
[ 26.941] (II) LoadModule: "ramdac"
[ 26.941] (II) Module "ramdac" already built-in
[ 26.941] (WW) NVIDIA(0): The NVIDIA GeForce 8800 GTS 512 GPU installed in this system
[ 26.941] (WW) NVIDIA(0): is supported through the NVIDIA 340.xx Legacy drivers.
[ 26.941] (WW) NVIDIA(0): Please visit http://www.nvidia.com/object/unix.html for
[ 26.941] (WW) NVIDIA(0): more information. The 343.22 NVIDIA driver will ignore
[ 26.941] (WW) NVIDIA(0): this GPU. Continuing probe...
[ 26.941] (EE) No devices detected.
[ 26.941] (EE)
Fatal server error:
[ 26.941] (EE) no screens found(EE)
[ 26.941] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 26.941] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[ 26.941] (EE)
Thank you for your answer!

Cannot boot after installing airport extreme

I tried to install my new airport extreme card on my powerbook G4 (at the back, as described in the instructions). the software had been installed before. when i tried to boot my computer (re-start), it did not boot, but showed a funny message:
Apple Powerbook 6, 1 4.5.f4 Boot ROM built on 01/14/03
Welcome to Open FOrmware, the system time and date (...)
The battery capacity (...)
To continue booting, type "mac-boot" and press return
To shut down, type "shut-down"and press return.
please help, i don't know what to do next and am afraid of loosing all my data.

See "To continue booting, type 'mac-boot' and press return" Message
No matter what happens, you won't lose your data.

Tp 32G wifi cannot boot after shutdown

totally in lost...
power button, power+center button, either is available
the battery level is not a problem.
now charging, waiting it wake up.
any one can help me ?
Post relates to: HP TouchPad (WiFi)

unbelievable
center+volume up+power for over 15 secs
then center + power
HP finaly showed up!

Can't boot G5 even from OS install disk. Help?

I've trolled the message boards 25 pages deep and searched all the "Can't boot my G5" threads and still haven't found anyone describing what my machine is doing so thought I'd start a new thread in the hopes someone can help me out.
Ok I have a G5 dual processor machine. (Power PC chip, not Intel) Things went bad when I tried to do an Archive and Install of Leopard (OS 10.5) The install looked as normal until I got to one minute left on the install. At that point the install never progressed. I thought maybe it was doing some behind the scenes processing and decided to leave it over night. The next day my machine was still hung on that One minute left. So obviously it was a failure. Of course now the problem is I have an install that never completed of the OS and so that partition is, I assume, unbootable. Wiped away the Tiger OS and did a 99% install of Leopard. So I had to shut down by holding the power button.
I think to myself, "No worries I can just boot from my 2nd partition holding down the Option key to select it on the boot up screen". I always keep a partition with an OS on it for times like these. So I reboot, hold option key, select my other partition, things look OK. I get the grey screen with the Apple logo and I get the wheel animation turning. (Not beachball of death but the typical circular, almost sun ray configuration thing) At this point, usually the screen will go black for a moment before the desktop loads. However, in my case once the screen goes black after the load screen, it stays black. Now let me say the monitor does NOT turn off. There is a definite difference when I manually turn the monitor off. When off it's truly black. But this is like a power on black, not true black. (If you need me to explain this better feel free to ask me to clarify)
So the untouched, pristine Tiger partition boot is a No Go. I figured I'd then give up on trying to put Leopard on my desktop machine (I use it on my laptop) and reinstall the original OS and system software from the system disk that came with my G5. I boot machine holding down eject button, place the disk in, close the drive door and shut down again by holding power button. Reboot holding C key and the same routine happens with booting from the disk. Gray Apple logo screen, sun ray circle moving, screen goes black on the attempted transition to desktop .. but stays black. I also tried booting with my Disk Warrior disk to no avail. Same thing happens. (Also tried booting from disks by selecting them manually from booting with Option key down) At first I wondered if it was a monitor issue. That maybe my desktop was up but there was an issue with the signal being passed to the monitor on the resolution jump. Thought perhaps hitting the Eject key on the keyboard when I had attempted to boot from the partition (not from disk on this test) would tell me if it was a monitor issue. If it was a monitor issue, the disk tray should open. But alas, no.
So since I cannot boot normally from any partition or disk I decided to boot into single-user mode.
I did the fsck -fy thing and it told me everything was ok. I had also previously installed applejack and I ran that and short of correcting a few permissions and dumping some unneeded caches it came back with a system OK.
At my wits end I booted into target disk mode and ran Disk Warrior on both the original half installed OS partition and the back up emergency boot up partition from my laptop. Again, everything OK. Hoped against hope that I could actually install an OS onto my G5 from my laptop but I was only given the option of being able to do it from my laptop with the Leopard disk and it would only allow me to do it if I used Disk Utility to completely format that drive first. No, thanks.
Re-attempt to boot G5. Failure. So now I turn to hardware. Disconnected everything beside the keyboard and mouse. Try again. Fail. Pulled a couple sticks of Crucial memory out of the machine and left the stock RAM. No dice. Pressed the small power unit reset button under the RAM slots. No change. Zapped the PRAM. Still nothing. Try to boot in Safe mode holding down shift key. Doesn't work.
It seems to me if I can't even get the machine to boot from the Install disk that there is something going on that is much more major than software issues.
Bad motherboard? Any ideas? Because I'm all out of ideas.

Brother, Sound74, I thought I was the only one pulling the hair out of my chest one by one the past two days. Your situation is very similar to mine, and I'm just as clueless as you are. I started getting kernel panic screens, then nothing on boot, until finally I brought it to the local genius bar. They ran all the usual software/hardware tests, updated Tiger to 10.4.11, recommended I buy Leopard and do an erase-install. My computer, of course, was working absolutely fine by this point. I bought Leopard, came home, backed everything up, then tried to install the new OS. Like in your case, it just up and quit half-way through. Screen went black and a "No DVI Signal" message came on my display (it does this when I turn it on without first turning on the computer).
So I thought, well, maybe it takes a really long time to erase-install, and the monitor is just waiting for things to kick back in. I've always upgrade-installed before, so I couldn't tell if this was normal or not. But about half an hour later, my fans kicked in so fast I thought I had a P-51 Mustang taking off in my studio. I waited a bit more and finally force-shut-down my system. Not knowing what to expect, I nervously tried to re-boot.
Nothing. Zip. I can't safe boot, I can't boot from the installer disc, etc. The only thing I can do is the option-key thing whereby you choose the startup disc. And of course, it only gives the Leopard install disc as an option, because now the entire HD has been erased! But when I choose the Leopard disc, of course it doesn't work.
So I have a nice $3000 paperweight sitting in my studio. I guess I'll have to bring it back to the Mac store, where if it costs more than $300 to fix, I'm going to say screw it and put that dough toward a new iMac.
Sorry I couldn't provide any helpful info, but I just wanted you to know you're not alone in suffering the slings and arrows of outrageous technology.
Keep me posted on any solutions you discover, and I'll do the same.
Noochy1
PS My applecare expired a month ago! AAAAARRRRGGGHHHH!!! **** Murphy and his stupid laws.

Cannot boot after recovering a FileVault 2 protected disk

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