My Mac Mini Will Not Boot From Install Disc For Re-Installation

I've tried all (at least the ones I've found) workarounds to get my Snow Leopard Install Disc to boot, but it will not. When the computer boots normally (without the DVD), I can insert the DVD and access it from there. However, when I try to use the utilities on the disc, it requires a reboot that ends up telling me to turn off my computer. I have a Late 2010 Mac Mini and I have yet to try booting from a disc, so I don't know if this is a new problem or an old one. Any help would be greatly appreciated.

Unplug everything from your computer except a wired keyboard/mouse and the monitor. If your Mini still won't boot from the install DVD try resetting the PRAM and SMC.
Intel-based Macs: Resetting the System Management Controller (SMC)
Resetting your Mac's PRAM and NVRAM
If that doesn't fix the problem remove any RAM (if you upgraded) and replace with the Mini's original RAM. There is also this document you might want to read, Mac OS X: Gray screen appears during startup.
If that all fails I would take the Mini to the Apple store. It should still be under warranty if you bought it late last year.

Similar Messages

Will Not Boot from Install Disc & 4SNS/1/40000000: TG0D - Thermal Sensor?

*Will Not Boot from Install Disc*
I used the "option key" approach with the gray start up disk. At first it ejected the start up disk. Then I nudged the disk back in the machine and it showed on the screen as an option. I clicked on the start up disk image and it finally loaded.
But, it won't accept the start up disk when holding down the "C" key at restart.
*4SNS/1/40000000: TG0D*
I did an Apple Hardware Test and received the following diagnostic:
Version: 3A121
Test Suite: Extended Test
Loop Count: 2
Result: Failed
Failure code: 4SNS/1/40000000: TG0D
*Thermal Sensor*
A search for the failure code 4SNS/1/40000000: TG0D brought up an Apple Discussion topic entry stating: That error code indicates a problem with a thermal sensor. It could be not working or possibly not connected. You will need to take it to Apple for repair.
Would a thermal sensor have anything to do with it not starting up when holding down the "C" key at restart? What are thermal sensor problem symptoms?
*User File Folder Opened Up*
The machine also starts up with my user file folder opened up rather than with a blank screen as it normally should
I completed a DiskWarrior rebuild on the disk and verify disk shows it is fine.
Any suggestions on what to do next with these issues?

The answer was in your post: "You will need to take it to Apple for repair."

Will Not Boot From Install Disc

Upon a Verify Disk check I received a "Volume Header needs minor repair" notice.
Because it is necessary to boot from another disc to repair the header, I attempted to boot from the install disc. I tried restarts holding down the "C" or by selecting the start up disc in System Preferences/Startup Disk. I've tried each of the these several times to no avail. The machine will not start from the install disc. It keeps starting from the machine hard drive.
Are there any other suggestions how to force it to start from a startup disk?

The installer disc problem is still a concern but in the meantime you can try booting to Safe Mode. Run Disk Utility again from Safe Mode and see if it still reports problems. Boot normally afterward.
[Mac OS X: Starting up in Safe Mode|http://docs.info.apple.com/article.html?artnum=107393]
[What is Safe Boot, Safe Mode? (Mac OS X)|http://docs.info.apple.com/article.html?artnum=107392]
[Safe Boot takes longer than normal startup|http://docs.info.apple.com/article.html?artnum=107394]
[Mac OS X 10.4, 10.5- Computer shuts down during Safe Boot|http://support.apple.com/kb/TA24054]
Safe boot mode runs a directory check command similar to that used by Disk Utility's repair. In Tiger it ignores some stored information (cache) that is normally read that speeds up the boot process, and it moves some other caches to the trash. It also uses only System fonts and disables all Startup Items, third party items, and any Login Items.

Mac Mini Will not boot from external drive or install disk

Hi,
I just bought a new 2.0 ghz mac mini 1 gb ram. 120gb hdd.
I have a separate external HDD attached and wanted to boot from this. It works with my MBP and IMAC.
When i plug it into the Mac Mini and start up with Option key. It recognizes it.
I then click on it. It automatically reboots.... then grey screen comes on. It goes black after about 10 seconds. then boots into original operating system.
I also tried to use the MAC install Disk, thinking it might be a corruption in the shipped software. It does the same thing.
I have MAC Install DVD on an external drive too. Same issue.
I partitioned the HDD and installed a copy of the Mac install disk onto that with disk utility... Same thing grey screen, then black then back to original operating system.
Not sure what is going on?
thanks
Chris

Hi,
Thanks.
It is running 10.5.8.
I am trying to boot up an external drive with 10.5.8 on it. It works on my Macbook Pro which is running 10.5.8, runs on my IMAC running SL. But doesnt work on the mac mini?
It had been running SL, however there are a number of programs I have like Windows Live Sync which are not yet compatable with SL so i downgraded to 10.5.6 which came with the Mac Mini then loaded all updates.
It seems to just go into an auto reboot as soon as i click on it.
i thought it might be the firmware? Is it possible to downgrade them and then re-install?
I have reset the PRAM.
Any help would be appreciated.
Thanks

Holding c while resarting but will not boot from install disc

hello,
I have a G4 Titanium Powerbook currently running os 10.3.9.
I have been having troubles ever since upgrading to Quicktime a while back such as Quicktime not playing files, missing codecs, Pro-Tools and other software crashes, Itunes will not open with M-Box connected, etc.
I have tried to repair permissions with the disk utility and still same issues.
I have backed up all important files and would like to just reinstall the os 10.1 using the disc I got with the powerbook hoping to be able to upgrade back to 10.3.9.
I have tried to shutdown with the disk in and turn on with the c button pressed and it still boots up as usual.
I have also tried to restart holding c and still boots up as usual. I just cannot seem to get the powerbook to boot from the install disc.
The disc is the powerbook g4 mac osx 10.1 install disc.
What am I doing wrong?

i have the following discs.
mac osx install - which is 10.1
mac os9 install
software restore 1
software restore 2
mac osx developer tools
I have tried to boot by holding c with the mac osx install and the software restore 1 discs to no avail
I just tried to put itunes on the desktop run disc utility trash itunes reciepts and repaired permissions and got this messege which i seem to get every time but am still having issues.
Repairing permissions for “Macintosh HD”
Determining correct file permissions.
We are using special permissions for the file or directory ./Library/ColorSync/Profiles/Displays. New permissions are 16893
We are using special permissions for the file or directory ./Library/ColorSync/Profiles. New permissions are 16893
We are using special permissions for the file or directory ./System/Library/Filesystems/cd9660.fs/cd9660.util. New permissions are 33261
We are using a special uid for the file or directory ./private/var/at/jobs. New uid is 1
We are using a special uid for the file or directory ./private/var/at/spool. New uid is 1
The privileges have been verified or repaired on the selected volume
Permissions repair complete
I just really want a clean install. help please
powerbook G4 Mac OS X (10.3.9)

Will Not Boot from Install Disc | 4SNS/1/40000000: TG0D

I used the "option key" approach with the gray start up disk. At first it ejected the start up disk. Then I nudged the disk back in the machine and it showed on the screen as an option. I clicked on the start up disk image and it finally loaded.
But, it won't accept the start up disk when holding down the "C" key at restart.
I did an Apple Hardware Test and received the following diagnostic:
Version: 3A121
Test Suite: Extended Test
Loop Count: 2
Result: Failed
Failure code: 4SNS/1/40000000: TG0D
A search for the failure code 4SNS/1/40000000: TG0D brought up an Apple Discussion topic entry stating: +That error code indicates a problem with a thermal sensor. It could be not working or possibly not connected. You will need to take it to Apple for repair.+
Would a thermal sensor have anything to do with it not starting up when holding down the "C" key at restart? What are thermal sensor problem symptoms?
The machine also starts up with my user file folder opened up rather than with a blank screen as it normally should
I completed a DiskWarrior rebuild on the disk and verify disk shows it is fine.
Any suggestions on what to do next with these issues?

One guy fixed it by pulling one RAM stick out...
http://forum.notebookreview.com/showthread.php?t=338780
It might mean overheating or worse things too.

Hello, mac mini will not boot. I get a file symbol with a question mark, then a white screen, Hello, mac mini will not boot. I get a file symbol with a question mark, then a white screen

Hello, My mac mini will not boot. When I turn it on, I get the chime, then the white screen, then the apple symbol, then a file symbol with a question mark, then the white screen and then it stays like that.
Is this a bad hard drive?

Sounds like it. Try booting from your OSX restore DVDs - startup and hold down "C". This will take AGES! Then run Disk Utility from the menu.
The flashing ? means your system is corrupt, dead, not there, on a dying HD, etc...

Mac Mini will not boot OS, can I get to files with another Mac?

My mac mini will not boot the OS proserly, it goes to a screen that tells me that some root folder can not be found.
The install CD works and I can boot to it. The disk utility reports no problems, all disk repairs done and OK.
The computer still will not boot to the OS.
How can I get the files I need off the drive before I reinstall the OS?
I have other Macs and fire wire cables, cross over cables, regular eithernet cables. What can I do?
Thanks!

How can I get the files I need off the drive before I reinstall the OS?
Connect it to another Mac with a FireWire cable and start it up with the T key held down.
(40535)

G4 that will not boot from any disc EXCEPT the Apple Hardware Test CD

We have a DP 1ghz Quicksilver PowerMac G4 that will not boot from any disc EXCEPT the Apple Hardware Test CD that came with the machine.
We were in the process of installing 10.4 Tiger before placing it for sale.
The Mac was originally OSX Server 10.1 that we later converted to a worksation running 10.3 Panther.
It has 1 GB of memory, 80GB hardrive, 250MB Zip Drive and a Radeon 7500 video card.
Since this machine only has a CD-R drive and not a DVD-R, we installed Tiger using another Mac via Target Disk Mode. The installation process went well, but when I tried to reboot I got a Kernel Panic right after startup screen with the grey Apple logo.
On some reboots we get to the blue startup screen, others it stops at the grey Apple logo, others a black box like the a Kernel Panic - but with no text. Twice it went directly into Open Firmware.
We have done the following during our troubleshooting:
- Reseat RAM, Video Card, Hard Drive, Zip & CD-R connections
- Remove RAM 1 stick at a time and reboot
- Replace RAM with RAM from another working Quicksilver
- Replace Video Card with one from another working Quicksilver
- Zap PRAM
- Reset CUDA switch
- Unplug the MAC and remove everything (RAM, Battery, etc) for 30 minutes and try to reboot
- Tried booting from the Macintosh Server G4 Software Restore CD
- Tried booting from Mac OS X Server CD
- Tried booting from AppleCare Protection Plan CD with TechTool
- Tried booting from Diskwarrior CD
- Tried booting from an external FireWire drive with a disk image of Tiger OS Install
- Tried booting with the hard drive disconnected
The Mac WILL boot from the Apple Hardware Test CD and will pass ALL of the extended tests.

Conventional wisdom says that any Mac that will not boot up from a System/Install CD OS 9 or an Install CD Mac OS X, has a Hardware problem.
The diagnostic CD is a red herring because it uses a very primitive method of reading the CD, and so does not properly represent the machines general ability to read CDs.
I would look at the CD drive cables, etc, and see if another drive gives different results.
You have not mentioned using the Startup Manager (option key at Startup) to do any checking:
HT1310- Startup Manager: How to select a startup volume

Wiped macbook pro will not boot from install DVD

I recently purchased an older MacBook Pro that came with the OS system wiped but it did have the original Install DVDs. The computer will not boot from the DVD. I have booted holding down the C key and nothing happens. I have booted holding down the Option key and it shows the Install DVD and I select this and nothing happens.
How do I get it to open up the Utilities from the DVD to install the operating system?

It could be a problem with the optical drive, but also may be due to the DVD's being for a different model.
Exactly which MBP do you have, and what serial numbers are on the discs ?.

Macbook Pro will not load OS and will not boot from Install Disk

When I try to turn on my macbook pro it goes to the gray logo screen with the spinning gear however it does not progress from there and then after several minutes it proceeds to restart itself and the same process repeats itself. I have tried to boot into single user mode with success and have run /sbin/fsck -fy and that has returned that the volume appears to be ok. However, when I hit reboot it returns to the same process of the gray screen and spinning gear to black screen which repeats. When I boot into verbose mode it progresses to AppleYukon2: RxRingSize <= 1024, TxRingSize 256, RXMAXLE 1024, TXMAXLE 768, STMAXLE 3328 then it stalls for several minutes and then it shows continuing
synchronizing disks... Killing processes
then it says some other stuff to fast to read.
When I try to boot from the install disk it will not boot from holding the c key it goes through the same aforementioned cycle. When using option to boot I can see the Disk then when I select it the cycle happens again.
Also I have XP installed and I am able to boot into that successfully. Any help would be greatly appreciated.
Not sure if I left anything out
-bryce

Welcome to Apple Discussions.
Do you have multiple Accounts defined on that system? The last time you successfully were running, did you run from the Account with Administrator privileges?
Do you have another computer from which you could boot and connect the Macbook Pro in Target Disk Mode to take a look at the drive from your working machine? Perhaps you can run Disk Utility from the working machine and point to the hard disk on the failing Macbook Pro.
Message was edited by: Rick Lang

Mac Pro will not boot from Leopard or any CD or DVD install disk

My Mac Pro wont boot from my Leopard install DVD. It never gets by the gray screen, then after several minutes the screen scrolls down black and says I need to restart my computer. I tried my Tiger install disk and it still wont boot from that DVD. Held down the "C", used "option" and selected DVD and still no boot. I can boot from one HD that has Leopard 10.5.8, but another HD with Snow Leopard 10.6.3 will not boot. The HD with Snow Leopard shows up as "EFI Boot" not the name I gave that HD when I startup using the "option" key. Any help would be appreciated.

At first I was just going to say it sounds like you have a bad optical drive, but then you had to go and say that it also won't boot from a HDD.
That just makes things a whole lot worse.
Start by removing the side cover and checking the RAM to see if any of the LEDs are lit up indicating bad RAM. Usually if there's any bad RAM found, it will just automatically disable that stick, but maybe yours isn't for some reason.
Look for any other LEDs that may be lit. Generally speaking, the only time you should see an LED (outside of the power LED) lit consistently is if there's a problem.
You should also see if you can get Apple Hardware Test to run, which may or may not find some problem.
But sorry to say, it's sounding very suspiciously like a bad logic board.
One other thing to try, is putting the SL drive into a different slot. So if you were putting it in slot 2, try slot 3 or 4. If you just have a bad SATA port, you might be able to just work around that until you get a new system.
If by chance this system is still under warranty, do not walk, do not pass go, do not collect $200, RUN to the nearest AASP or Apple store to make it THEIR problem to sort out.

Mac Mini will not boot after Security Update 2008-007

Hello,
A G4 Mac Mini machine I was asked to take a look at will not boot after the owner (succesfully) installed Security Update 2008-007 from Software Update. Booting always hangs at the blue screen after the Apple logo, and booting in verbose mode reveals that WindowServer is crashing repeatedly. Permissions and filesystems have been repaired, PRAM reset, etc. Safe boot also exhibits the same problem, but it is possible to boot to single user mode. Hardware checks out fine with diagnostic utilities.
Any suggestions on how to fix this? Unfortunately, backups are not available (it's not my machine =).

Hi Arkku , and a warm welcome to the forums!
I'd certainly give Sig's advice a try first.
If that should fail...
applesetupdone...
This was Posted by: JoseAranda at September 9, 2006 3:48 AM
"OK, restart your computer, hold down Command-s and type in the following:
/sbin/fsck -fy Enter
/sbin/mount -uaw Enter
rm /var/db/.applesetupdone Enter
# The rm command is the remove command which deletes the file.
# Robert: I'd rename the file via: mv /var/db/.applesetupdone /var/db/.applesetupdone.old
reboot Enter
Once you've done that the computer reboots and it's like the first time you used the machine. Your old accounts are all safe. From there you just change all other account passwords in the account preferences!!
end of posted by: JoseAranda"
Reset OS X Password Without an OS X CD...
http://theappleblog.com/2008/06/22/reset-os-x-password-without-an-os-x-cd/

Mac Mini will not boot up at all

Mac Mini 1.5Ghz Intel Solo, will not boot up now. It first froze when playing a song in iTunes. I shut down "the hard way." Now it can't make it past the gray boot screen. It's not even responding to any keyboard commands on boot. I can't get into Safe Mode, Boot from Recovery Disc or Single user.
HELP!!!!

If you have the original Apple Aluminum usb keyboard, the startup modifier keys won't work with your Mini. But just about any other wired usb keyboard should work.
If you use a PC usb keyboard, Alt maps to Option and the Win key maps to the CMD (Apple) key.
If you just want to boot from the install or recovery disk, then the Apple remote can be used: holding down the remote's Menu button at startup works the same as holding down the Option Key, namely, it gives you the choice of what disk/disc to boot from.

New hard drive. Will not boot from install dvd.

Earlier this week, I dropped my computer.
It was probably a 3 foot fall.
Computer froze, so I restarted and got the flashing folder with question mark.
Started in internet recovery, and disk utility confirmed that I had killed my hard drive.
Got a new hard drive and installed. Started in internet recovery, formatted hard drive. Disk utility says it's good to go.
Was given the option to install Mavericks, but keep getting an error message.
Attempted to restart from install dvd that came with the MBP. Tried every startup shortcut there is.
Optical drive recognizes the disk, but I always get stuck on the gray screen with the wheel.
Reset PRAM. Reset SMC. Same problems. I do not have access to another mac or a PC with admin rights.
I'd rather not brave the Apple Store this weekend in the snow in a town that never gets snow (people drive poorly on a good day!).
Any tips?
Got the MBP in 2010, new. Was running mountain lion when I dropped it.
Thanks!

Yiou can't use Internet recovery on a 2010 Mac notebook to install any version of OS X on it. That is why you are getting that error. You have to use the original System reinstall discs that came with it to install OS X on a new drive or use the OS X reinstall disk to restore from a time machine backup.
Since your system doesn't seem to want to completely boot from that disc you should try an external DVD drive that connects by USB port as the built in superdrives are known to fail or partially fail at any time. Don't buy an Apple external Superdrive as they only work on Mac computer that did not originally come with a built in DVD drive. Any Brand external DVD drive will work on your Mac except Apples own external DVD drive.

My Mac Mini Will Not Boot From Install Disc For Re-Installation

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