T-21 laptop that won't "boot"

I've had this laptop for 4 years - no problems. Now I turn it on, and the IBM screen comes up - I can't get it to "boot", and pressing the F1 key doesn't do anything. Think the battery needs replacing? I never connected to the internet with it - used it only for writing purposes. Any advice is welcome!
Thanks!

I'll agree with RexDynasty that it sounds bad...
Try removing the battery, hard drive, media drive, and mini-PCI card and accessing BIOS with a machine stripped like that...
Good luck.
Cheers,
George
In daily use: R60F, R500F, T61, T410
Collecting dust: T60
Enjoying retirement: A31p, T42p,
Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W
Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.

Similar Messages

Repairing laptops that won't boot and show the blinking caps

Here's a little tutorial for all of you who have this annoying issue. It mostly applies to the 1 blink code (other codes have much simpler and straightforward solutions).
Ok, so the code says that it's caused because of a not functional CPU. That is most likely not the case. Most people who had the 1 blink code actually had a problem with the integrated video graphics card or northbridge of their laptops, not the CPU (in fact, CPU failures are quite uncommon). The problem is that these chips overheat quite often, they don't have good cooling and dissipation systems (most of the time, it is shared with the CPU which is absolutely insane), and the solder connections are of very bad quality. So with overheating, solder points start fracturing or cracking and they stop making contact, which causes all these issues, including the infamous RRoD and YLoD issues in the Xbox and Playstation consoles with their soldered video chips.
So there are two main ways of dealing with this:
1 - Reflow
This is a short-term but easy solution that simply consists of reheating the damaged component to the point of getting rid of said fractures. It has a high success rate, as many people will tell you. It worked for me always, but again, after some time the issue may come back. Still, this is a very simple solution that doesn't require too much skill or equipment and is satisfying enough for most users. This is what I'm going to show how to do in this tutorial.
2 - Reball
Reflowing doesn't always work, and when it does, it doesn't last long. Instead, reballing is a permanent solution which consists of removing the chip in its entirety and replacing all the solder contacts. Reballing requires specific equipment (a reball station), reballing stencils and leaded solder balls. It is a long procedure, which requires some skill and it only should be performed by experienced people. When a reflow won't work, you are better off sending your laptop to a reballing technician, or buying a new one (which would be a waste, in my opinion).
Ok, so how can we do a reflow? There are many ways to do this:
1) Reheating your laptop: This is a simple as it sounds. Some people call it the "blanket" method, because you can just simply turn on your laptop, wrap it with a blanket or sweater and let it run until it shuts down because of overheating. I absolutely don't recommend doing this, as there are probably many working components (particularly the hard drive holding your data) that won't benefit from the overheating. I recommend disassembling the laptop and taking out all the good parts, like the hard drive, RAM sticks and any extra PCI-e cards installed. After that you can just simply unplug the cooling fan connector from the board then turn the laptop on. This will cause it to overheat faster, so you won't have to waste hours waiting for it to get hot (using the blanket method, it can take a lot of time). Most laptops will shutdown themselves after reaching a certain threshold temperature, if yours doesn't, well, just keep an eye on it so you can turn it off before it catches fire. After it turns off, let it rest and cool for at least an hour, then connect the cooling fan again, turn the laptop on and see if it boots. If it doesn't, well, you can keep trying this until it does (not recommended after 3 tries or so), or try the next methods.
2) The oven method: This a bit tricky, but it may be more successful in some cases. First, strip down your computer until you get to the bare board holding the video chip. Remove the CPU, heatsink & fan, RAM, BIOS battery, wires, speakers, stickers, plastic sticky guards, foam spacers, absolutely everything that can be removed from the motherboard. Then preheat your household oven to approximately 200°C or 385°F. If your oven does not have a digital temperature display, perhaps use an internal oven thermometer to make sure the oven is in the right temperature range. Roll up some kitchen foil into balls, between half an inch and an inch wide, and place them on a baking tray. Place your motherboard, with CPU socket and GPU facing upwards, on top of the foil balls. It is a good idea to wrap additional foil around the more sensitive parts of the motherboard, like areas where there are capacitors and the CPU socket.
Try to wrap the rest of the motherboard in foil to protect it, leaving just the GPU exposed on both the top and bottom of the motherboard. Then place the baking tray with the laptop motherboard on it into the preheated oven.
Make sure your kitchen is well ventilated at this stage, turn on the extractor fan to full power and/or open an outside door and windows. This will help to take away any fumes. Ideally, you should leave the kitchen while any fumes are still present. A couple of times during the procedure, have a quick look through the oven door (without opening it) making sure there are no smoke or flames visible. This is unlikely to occur, but can happen if stickers were left on the motherboard. After 8 minutes, turn the oven off and open the oven door. Do not remove the motherboard from the oven at this stage, it could be very hot and it is a better idea to allow it to cool down gradually. Take care not to inhale any fumes that might be present. After 20 minutes to half an hour, remove the cool motherboard from the oven and begin rebuilding your laptop. If all has gone well, it will boot up and the problem will be fixed. If the problem remains, you could try the procedure again, leaving it in the oven for a couple of minutes longer.
After performing a reflow in an oven, I recommend cleaning the oven thoroughly, then turn it on and allow any fumes that may have built up to be completely removed. This is especially important before cooking food in the oven again.
3) The heat gun method: Probably the best way to do a reflow, it is less destructive than the previous method (as you can focus on a single place, rather than overheating the entire board), but it may be worse than the first. The first step is to test out how well your heat gun will melt the solder. Place a chunk of solder on a coin, hold the heat gun one inch above it and record how long it takes the solder to flow. Once you have the timing right, mask off the motherboard (already removed from the case) so that just the chip in question is accessible. Reflow with the same spacing and timing as you did during the coin test.
Did it work?
If your laptop works now, then you can do a couple of extra things to avoid this problem in the future:
Avoid overheating by underclocking the CPU: You can run your laptop's CPU at a lower clock speed (it will run slower, BUT not as much as you think. Undercloking by a 50% doesn't mean your laptop will perform 50% slower). It not only protects your laptop from damaging over time, it has the added benefits of making it run *much* cooler and quieter and also having longer battery life, which is awesome as well. To do this, simply (in Windows 7 and up) click the battery icon in your notification area, select More power options, then change the selected plan (like Balanced) settings (click on Change plan settings), select Change advanced power settings, scroll down and, under Processor power management, Maximum processor state, type on both 'On Battery' and 'Plugged in' a value less than 50%. Change Minimum processor state to 1% and then System cooling policy to Active.
Avoid playing heavy games and running intensive applications: Such programs very often cause the underpowered integrated graphics card and CPU to overheat, which causes all these issues. Use a desktop machine with dedicated graphics for such programs if you want your laptop to last.
Again, always take out the hard drive before any of these procedures if you don't wanna lose any data, and if you can, any other components that can get damaged in the way. Note that a reflow, particularly the oven or heat gun methods are usually last-ditch resorts because they can permanently damage your computer, in particular if performed incorrectly. DO IT AT YOUR OWN RISK. I can't be held responsible for any accidents or unwanted results that may occur after following this tutorial. If you have doubts, then you're generally better off sending your laptop to professional technicians than trying to repair these kind of issues by yourself. Unless a repair costs more than replacing your laptop, that is.
And before starting any of these procedures, try to research your issue on the Internet as much as you can. Search for your particular model, search in this exact same forum and any other as you'll be able to read about people experiencing this problem. You can search reflow on your favorite search engine and you'll find detailed tutorials and many videos which will show the procedure and help you do a better repair. Once you're very comfortable and knowledgeable with the subject, you can go ahead with the repair.

This is actually good stuff and well written but I hesitate to advise people to use either the "oven trick" or really even the heat gun method as both are notriously short-lived even if they appear effective. Your far better bet is to send the board in to one of the vendors on the internet who are set up to do a proper reball. Even those fixes are good for maybe 12-18 mos. But again, you get a high grade for spelling it out.

I have an iMac that won't boot up. I've read all posts on this subject to no avail. When power is switched on, it chimes, Apple logo appears, spinning wheel, then loading bar starts to fill. It gets to about 25% then switches off! Help please!

iMac that won't boot up! When power is switched on it chimes, Apple logo appears, then loading bar, then spinning wheel. Bar seems to load up and gets to around 25%, then reverts to the start again, gets to about 20% on the bar and then switches itself off leaving a black screen. Tried all the remedies on internet with no avail so would welcome some advice other than binning what is a relatively new computer. Earliest appointment Apple could offer was Thursday 17th, really useful for a business user _ not impressed,

You've probably tried this, but will it Safe Boot? Restart holding down the Shift key until you see the grey progress bar. You'll need to input your admin password during bootup. If it will boot you can then try to eject the disk using the various suggestions here that you haven't tried already:
http://osxdaily.com/2009/08/28/eject-a-stuck-disk-from-your-mac-dvd-super-drive/
Or this (not tried this myself, but if things are desperate): http://www.youtube.com/watch?v=n7NYW9Dr448

I have a HP Pavilion DV5 1251nr that won't boot up.

I have a HP Pavilion DV5 1251nr that won't boot up. The light at the power connector comes on nothing happen

First thing to try is a hard reset. Remove the battery and power supply. Hold down the power button for 30 seconds. Wait another 30 seconds. Now plug in the power supply. Then try to start the computer. Let us know if that works. If not, we need to start thinking about hardware issues.

I have an iMac that won't boot up. Chimes, Gray screen w/ apple icon, spinning gear and progress bar at bottom, about 20 sec then shuts off.

I have an iMac that won't boot up. Chimes, Gray screen w/ apple icon, spinning gear and progress bar at bottom, about 20 sec then shuts off.
Please Help

The internal drive is malfunctioning. What backups do you have?

I have a 2012 Mini with a fusion drive that won't boot from a usb cloned drive. It came with 10.8.2 pre installed. I have zapped the PRAM and reset the SMC. Any thoughts?

I have a 2012 Mini with a fusion drive that won't boot from a usb cloned drive. It came with 10.8.2 pre installed. I have zapped the PRAM and reset the SMC. Any thoughts?

When I tried using a recently downloaded (from the App store) version of MtLion 10.8.2 (12C60) I could NOT get the new MacMini to install or boot from a USB I had previously made. I was however able to use the Recovery Mode of the MacMini to create a bootable SSD which I had installed. The problem arose when I went back into Recovery DU as it saw the seperate drives (SSD & HD) as a broken Fusion Drive. Interestingly DU from the boot volume had NO issues and reported NO faults. It was the Recovery DU that identified the faulty Fusion Drive configuration. At this point I am definately out of my depth but my speculation is that the Recovery Volume is being used in some fashion to form the method or pattern that DU assigns files to the drives, System Report sees the drives as seperate volumes with all their individual characteristics.
Disk Utility did not make a bootable USB, I don't have or use CCC or Super Duper.
Here is the longer version I've been compiling:
Having bought a late 2012 Mac Mini(6,2) i7 2.66GHZ with the standard 1TB 5400 HD and 4GB of RAM (base model) I immediately decided to install a Mercury Elite 6g 240GB SSD and up the RAM to 16GB. I received both shipments on the same day and had all my new toys in front of me. After following the video advice on OWC’s website for the installation of the second drive I started the mini and formatted the SSD to accept the OS from Recovery on the original HD. This MacMini shipped with 10.8.2 (12C2034) as the OS, the normal build of 10.8.2 is (12C60). Having used Recovery Disk Utility to format the SSD it came back with an error that DU could’t Repair. I went ahead and installed the OS on the SSD and the Mini booted normally from both drives. The issue I encountered with this setup was that iMovie encountered an “unexpected error” and would not save a completed project. I therefore decided to figure the drive issue out because I suspect the new Fusion File Management software didn’t like my configuration with drives that Recovery DU saw as needing to be “fixed”. After spending some time on the phone with both OWC and Apple Support I took the plunge and used Internet Recovery Disk Utility and allowed both drives to be “fixed” after which DU created a Fusion Drive (Logical Drive) that I then ran Repair Disk on and it showed up as a single drive in DU. It works perfectly as described by Apple’s site:
http://support.apple.com/kb/HT5446
Having checked the Link Speed and Negotiated Speed they both show as 6g so I’m pleased not to have lost performance due to it being fuzed to a 3g 5400 drive. The biggest drawback is that Apple’s Fusion Management only allows for 1 additional partition and I would have preferred more than that.
I have sourced some additional information here:
http://blog.macsales.com/15619-special-note-for-adding-an-ssd-to-a-2012-mac-mini ?
http://blog.macsales.com/15619-special-note-for-adding-an-ssd-to-a-2012-mac-mini ?
http://blog.macsales.com/15619-special-note-for-adding-an-ssd-to-a-2012-mac-mini ?
http://blog.fosketts.net/2011/08/05/undocumented-corestorage-commands/
If anyone has a factory Fusion Drive could you please post the Link and Negotiated Speeds of both drives? This information can be found in Apple > About This Mac > More Info… > System Report > Serial ATA and the drives should show up as discrete drives with their info listed separately.

Another iMac G3 that won't boot

Hello! I too, have an iMac G3 (slot loading) that won't boot. I press the power button and get the "happy mac" icon, but nothing else. If a CD in, you can hear the CD drive. I have tried various tricks, including command option P R, but nothing seems to work. I am now going to try my CD that came with the computer, but am wondering which I should try first, Apple Hardware Test, Apple Software Restore, or what?
Thanks, Beth

No, your remark is NOT dumb. Sometimes you need to quit the disk utility and than re activate it to see all of your options such as "verify permissions" and "repair permissions" which should be on the left side while the verify disk and repair disk is found on the right side.
You also might want to try booting from the install disk and than running the disk utility program or if that's what you are doing than open the utility program as soon as it shows up on the screen.

How do I transfer an Itunes library from my Ipod to a library on a new computer? The original library was built on a laptop that no longer boots.

I built an Itunes library for my Shuffle on an old laptop which no longer boots. I have since built a new library on my main computer and want to transfer the library that is still on the Ipod to the new library so I can add some new tunes. How do I do that? Thanks!

You can't transfer song files from iPod to computer using iTunes, except for songs purchased from the iTunes Store (and you can also re-download purchases on the iTunes Store Purchased page). However, there are third-party methods and utilities that can transfer from iPod to computer. If you do a Google search on something like "ipod transfer," you should get some links.
Once the song files are on your new computer, drag the files (or the folder containing the files) to the iTunes window to add them to the iTunes library.

Recovering files from mac that won't boot?

The other night when I was reading on my Macbook Pro, it randomly started giving me the spinning-wheel-of-death. I waited for about 15 minutes, but ended up shutting it down in the end because it was still frozen. I tried restarting, but now it won't boot past the grey screen with the apple logo. I tried multiple times, and eventually it would try to boot, get to the grey screen, and then just shut off.
I got it to bring up the OS X recovery page, and tried to verify the disk (the internal hard drive), but it told me I needed to repair it. So, I tried to repair it, but it told me it had stopped and that I needed to remove my files from the drive, reformat the drive, and then put them back on.
I'm not sure what the next steps are here... I've heard that there is a way to use a firewire 800 cable and another mac book to help remove files if my computer won't boot. Is this a good option for trying to save my files, and if so, can anyone explain how to do this for me?
Is there anything else I can do that might bring my darling Macbook back to life?
Thank you so much for your time and your help! I am feeling desperate!

Will the button not restart it or even from the menu bar? And what exactly is wrong, what are the symptoms? Will it not boot up or just not restart? But ya your best bet is to boot into target mood. If you cannot turn off your computer with any button (but it does turn it on) I would say let your battery die completely or remove it. Then hook it up via firewire to another mac, plug it in, and hold T as you turn it on, this will put it in target mode and allow you to retrieve your files (assuming the hard drive isn't dead which could be a near possibility from what you described. Good luck, if you have more info as exactly what is acting up, maybe we can find a better solution for you. Otherwise good luck.

Need help with laptop that won't start up

I have a Toshiba c655 laptop that had some viruses on it; *thought* I'd fixed it and all was well. When I turned off and re-started the computer, the screen showed "Toshiba Innovations", and at the bottom the options of pressing F2 for startup or F12 for boot manager...this screen is quickly replaced by a black screen with a white cursor in the top left hand corner. When I hit F2 or F12 and go to those screens, I'm not computer savvy enough to know what options (if any) I should choose that might help me to get this thing started....seems nothing happens with any of the buttons I push. The scenario I just described is the only thing this computer will do now. Any help? Thank you so much!

it sounds like missing system/boot files on hdd
1. try to press f2 during toshiba screen to go in bios and load default settings.
2. press f12 and select boot from cd if you have system rapair disk...or any live cd to backup your files
3. the last option ... press 0 on toshiba screen for system recovery...this will delete all information
sorry for my english

Yellow Flashing Light - AppleTVs that won't boot

Strictly that should be amber I guess
Well, I've finally dismantled my 40GB AppleTv that died last year.
It basically won't boot - no startup Apple logo on screen, and constant flashing amber LED.
Amber blinking indicates "Starting Up":
http://support.apple.com/kb/TA24576
So clearly it's failing to start up for some reason as it never exits this phase.
There is no response to remote, no white flash of LED in response to remote.
Consequently, unable to use Menu and down arrow (6 sec) to reboot to diagnostics menu.
I have always suspected a logic board failure or some other catastrophic failure, as there have been posts suggesting hard drive failure or loose drive connections give a flashing '?', as well as this suggesting possible failure to boot from the drive:
http://support.apple.com/kb/TA24604?viewlocale=en_US
I guess there could be any number of faults preventing it starting, from dodgy power supply to logic board, intrinsic logic board failure, CPU failure etc etc, but having had a failed logic board in a 2006 white iMac and a 2007 Mac Mini that would be my top bet!
Anyhow I remembered I had an old 60GB portable USB drive, which fortunately had an enclosure with screws!
Removed the AppleTVs 40GB 2.5" PATA drive, hooked it up to the USB PATA enclosure, plugged it in and nearly fell off my chair when a message flashed up saying 'A USB device is drawing too much current so the hub will be deactivated".
Thought bingo, the drive must be faulty.
Using the PATA from the portable drive I verified this USB port still worked, thankfully it did.
Tried again with the AppleTV drive in the enclosure, and for some reason this time it worked and I could access it. Reinstalled into AppleTV just in case it had been kicked into life, but no go.
The AppleTv has a small CR2032 battery which I removed after unplugging, left it for a few mins, and replaced with a new one, restarted but no joy.
It will not start with a flashing ? if I disconnect the drive, nor will it start with a flashing ? with a different (effectively) unformatted PATA drive.
Unplugged the wireless card in case that was faulty, no joy.
The small fan is spinning so that hasn't failed.
So, I must conclude that it's not the hard drive at all, and most likely logic board, CPU or GPU. Could also be power supply to logic board not giving enough juice to startup properly, or some other component but not something simple to repair.
Am disinclined to open another AppleTV at this stage to swap components about to try to narrow it down, but when another unit fails, I may just try that, keeping this one for spares - at least I know I have a spare working 40GB PATA drive.

I'm having a similar problem. The other night, while i had the powerbook plugged in, it suddenly switched over to battery. I didn't really think too much of it and put it sleep. Well, it drained almost completely while sleeping and when I plugged the power back in, the green light wouldn't come on. Nothing. No booting, nothing.
I'd been in a very dusty environment, so I blew into the power socket. Well, now I get the green light on the power cable, but it's constant, and I can't tell if it's charging or not. I don't think it is, as the battery lights still flash the single LED very quickly.
I've reset the PMU and have been told to go into the open firmware, but I have to be able to boot to do that -- and obviously I can't do that.
I'm in Baghdad and can't just drop by an Apple store, so if anyone has any ideas, I'd be really, really grateful.

How to access old G5 Beige Tower that won't boot?

I own a couple of computers, a G5 Beige Tower and some early iMac I believe (come to think of it, now I can't picture what it looks like).
The G5 won't boot up—I haven't given it a try in years, but I refused to throw it away. I think it shows a flashing question mark inside of a macintosh icon.
I lugged that thing into an Apple store long ago and they managed to retrieve SOME files (they sure didn't try very hard, imo), so that tells me that I may still be able to access the hard drive, is this correct? Do I only need a boot drive somehow? I'm not sure if I even have one, floppy or CD.
The second computer was fried in an EMP. Lightning must've struck somewhere nearby (there was a huge storm at the time) and the craziest pulse of energy went through my body, I'll never forget it. It was like exploding in slow-motion, every particle in my body pushing outward, and when it was over, I was fine (shaken), but my computer was dead along with other electronic gizmos. Any opinions on if I should give up on this?
Would an Apple genius even know what to do if I took that computer in?
Both are old but may have some files from college that I'd love to recover.

Hi,
You mentioned a "G5 Beige Tower". The last beige Macintosh tower computer was a G3 model (http://support.apple.com/kb/sp406). Could it be this one instead?
If it is the G3 model in the technical specifications above, minimum Mac OS 8.0 would be needed for startup. This could be an appropriate/supported system CD. It could also be the Disk Tools PPC floppy that has been made available for download from Apple (you would then need a working older Mac with a built-in floppy drive and Disk Copy 6.3.3 in order to create a bootable floppy from the disk image):
http://download.info.apple.com/Apple_Support_Area/Apple_Software_Updates/English -North_American/Macintosh/System/Mac_OS_8.1_Update/Disk_Tools_PPC.img.bin
http://download.info.apple.com/Apple_Support_Area/Apple_Software_Updates/English -North_American/Macintosh/Utilities/Disk_Copy/Disk_Copy_6.3.3.smi.bin
A bad logic board battery can sometimes cause startup problems. You may also want to try a PRAM reset:
http://support.apple.com/kb/ht1379
Another possibility would be to remove the internal hard drive (the same could be tried with the iMac). An IDE/ATA drive can be connected to an external USB adapter (such as the example below) and then read on a more modern Mac (or even a PC with the correct software).
http://www.newertech.com/products/usb3_universaldriveadap.php
If necessary, disassembly guides can be found, for example, at ifixit.com.
Jan

Mac noob has an imac g3 that won't boot

i recently got a imac g3 from a friend to play with. i've never used a mac, so i was hoping to learn a bit.
at first, it seemed to work fine... nothing wrong
later, out of curiosity, i tried to boot from an ubuntu live cd and that's where everything went wrong.
it started to boot, then hung, so i ejected the CD and rebooted the computer... and ever since, the computer won't boot at all
it makes the chime, then sits at a grey screen for a long time (i usually walk away at this point) and eventually a folder with the mac logo pops up and nothing happens from there.
booting from CD also does nothing. the CD starts to spin up, then idles.
i don't have a firewire hard drive to test firewire boot either...
i've tried appleoption+pr and it made the chime twice, but i still get the same results.
any ideas?

Sometimes if volumes don't appear in Startup Manager (what you get when you hold down the Option key at startup), you need to reset the Mac's PRAM, NVRAM, and Open ourFirmware. Shut down the Mac, then power it up, and before the screen lights up, quickly hold down the Command, Option, P, and R keys, until the Mac has chimed twice more after the powerup chime. Then, before the screen lights up, hold down Command-Option-O-F until the Open Firmware screen appears. Then enter these lines, pressing Return after each one:
reset-nvram
set-defaults
reset-all
"The reset-all command should restart your Mac. If so, you have successfully reset the Open Firmware settings."
http://support.apple.com/kb/TS1812?viewlocale=en_US
How to eject a cd from the internal cd drive:
eject cd
List of devices:
devalias
List of variables:
printenv
Resetting your Mac's PRAM and NVRAM
http://support.apple.com/kb/HT1379
reset the PMU
http://mrjcd.com/junk/PMU.jpg
well, an external monitor did nothing
as for the firmware, it has 4.1.9f1...
That's a positive sign.
when i hold the option key on startup, i get two buttons, (a round arrow and a straight arrow) both of which i am unable to click. The firmware could not find a valid os. Should include icons for each partition or cd with a valid os. Why don't you try boot with the option key with a cd in the drive.
but is there a way i can use open firmware to redirect the boot partition?
I hadn't been able to fathom the syntax... until I listed a bunch of os's.
Used startup of system perferences to select disk/media then click on lock then
Macintosh-HD -> Applications -> Utilities -> Terminal
nvram boot-device
Now, we can guess meaning:
boot-device mac-io/ata-4@1f000/@0:12,\\:tbxi
   | | Partition/location
   | on device
   |
   0 = master
   1 = slave
   for ata internal device
Why set nvram variable? I've had open-firmware based Pegasos PPC and it simply had boot command, so instead of:
setenv boot-device ud:3,\:tbxi
should be enough to write:
boot ud:3,\:tbxi
my setup,boot my internal harddrive Tiger partition:
boot-device mac-io/ata-4@1f000/@0:12,\\:tbxi
my setup, boot my internal harddrive classic 9.2.2 partition
boot-device mac-io/ata-4@1f000/@0:10,\\:tbxi
boot from Mac OS 9 cd???
boot-device mac-io/ata-4@1f000/@1:9,\\:tbxi
boot 10.2 install cd
boot-device mac-io/ata-4@1f000/@1:9,\\:tbxi
boot hardware test cd
boot-device mac-io/ata-4@1f000/@1:9,\\:tbxi
boot from external firewire hd with Tiger installed
boot-device fw/node@1d202009c115c/sbp-2@c000/@0:10,\\:tbxi
boot from external firewire cd/dvd drive Tiger DVD
boot-device fw/node@50770500071002/sbp-2@4000/@0:3,\\:tbxi
boot from external firewire cd/dvd drive 9.2.2 install cd
boot-device fw/node@50770500071002/sbp-2@4000/@0:9,\\:tbxi
boot from external firewire cd/dvd drive Hardware test
boot-device fw/node@50770500071002/sbp-2@4000/@0:9,\\:tbxi
network startup
boot-device enet:bootp
mac $ sudo pdisk -l
Password:
Partition map (with 512 byte blocks) on '/dev/rdisk0'
#: type name length base ( size )
1: Apple_partition_map Apple 63 @ 1
2: Apple_Driver43*Macintosh 56 @ 64
3: Apple_Driver43*Macintosh 56 @ 120
4: Apple_Driver_ATA*Macintosh 56 @ 176
5: Apple_Driver_ATA*Macintosh 56 @ 232
6: Apple_FWDriver Macintosh 512 @ 288
7: Apple_Driver_IOKit Macintosh 512 @ 800
8: Apple_Patches Patch Partition 512 @ 1312
9: Apple_Free 262144 @ 1824 (128.0M)
10: Apple_HFS Apple_HFS_Untitled_1 2254440 @ 263968 ( 1.1G)
11: Apple_Free 262144 @ 2518408 (128.0M)
12: Apple_HFS Apple_HFS_Untitled_2 146538496 @ 2780552 ( 69.9G)
13: Apple_Free 6982440 @ 149319048 ( 3.3G)
Device block size=512, Number of Blocks=156301488 (74.5G)
DeviceType=0x0, DeviceId=0x0
Drivers-
1: 23 @ 64, type=0x1
2: 36 @ 120, type=0xffff
3: 21 @ 176, type=0x701
4: 34 @ 232, type=0xf8ff
pdisk: No valid block 1 on '/dev/rdisk2'
Partition map (with 512 byte blocks) on '/dev/rdisk3'
#: type name length base ( size )
1: Apple_partition_map Apple 63 @ 1
2: Apple_Driver_ATAPI*Macintosh 8 @ 64
3: Apple_HFS Mac_OS_X 5531656 @ 72 ( 2.6G)
4: Apple_Free 10 @ 5531728
Device block size=512, Number of Blocks=5531738 (2.6G)
DeviceType=0x0, DeviceId=0x0
Drivers-
1: 4 @ 64, type=0x701
mac $
why am i now unable to boot from CD as well?
See Richard's second paragraph having to boot up from the original cd to get cd reader to work again.
http://discussions.apple.com/thread.jspa?messageID=5966197#5966197
i'd love to get this thing working again
Mac OS X keyboard shortcuts
http://support.apple.com/kb/HT1343
Well, you could get an external firewire CD/DVD drive and use the option key to boot a cd/dvd in the drive.
thank you all for your help
-Randy
Message was edited by: rccharles

26 MacBooks that won't boot

I have 26 new MacBooks, 2009 unibody model. After imaging using DeployStudio, all the MacBooks seem to boot fine until they get to the login screen, at which all the computer immediately go to sleep. None of them will wake from sleep. The NetInstall Set was created using the same model MacBook with 10.6.1, and again using 10.6.2. Made no difference.
If I boot from the system DVD, it does the same. The moment it gets to the Language Selection screen, it immediately goes to sleep.
This is for all 26 MacBooks.
Booting from the AHT DVD does not report any hardware problems, and it does boot fine without going to sleep. Although the mouse won't click under AHT, which prevents me from running the extended test.
Single User Mode will boot into the CLI, but if I continue booting into OS X it immediately goes to sleep exactly when it gets to the Login screen.
I've reset the PMU and that does nothing. Zapping the PRAM about 10 or 12 times (not 3 to 5, that does nothing) will get the machine to come up. However, after the machine has remained off for about 20 minutes, it will resort to falling asleep whether booted from the HDD or from the System DVD.
This is on all 26 MacBooks. This behavior is not exhibited on our 2009 13" MacBook Pros.

Found the solution! And, yes, it was the magnetic latch sensor. No, it's not a hardware defect. Well, not intentionally because I don't think they expected people to do this with the laptops. While I'm imaging the laptops, I have a 10 piles of 5 to 6 laptops on each pile, and I work my way down the piles imaging 10 at a time.
So my coworker one day asked me, "So you said they're magnetic latches for the lids, right?"
"Yeah."
"And you have 5 or 6 of them stacked on top of each other, with all their magnets right next to each other?"
"Yeah, they use a magnet for the lid instead of a mechan- oh god."
So with a resounding slap to my forhead heard across the campus, I laid out all the laptops by themselves on the table instead of stacked on top of each other, and what do you know? They're no longer going into sleep/hibernate mode.
With 5 laptops all stacked on top of each other and their magnetic latches all right above each other, even with the lid open on the top-most computer, the computer thought the lid was closed because the other 4 magnets had JUST enough oomph to trick the sensor into thinking the lid was still closed.
That would also explain why every single time I took ONE laptop to the Apple Store, I could never get the laptop to repeat the problem. It'd also explain why when I nudged/jiggled the laptop, it would come back out of sleep.
So, while this was an embarrassing discovery, at least I know.

I have an eraly 2011 macbook pro that won't boot to dvd

My macbook pro recently started crashing after a few minutes of use, and after doing that a few times it sopped booting to disk and the scrren apeared to be slighty pixalated and in a blue tint rather than the usual grey. I took it to a store that informed me that my logic board was fried. I bought a part on my own and replaced it . After that the computer started booting fine but slower than usual, but when I went into the disk utility and atempted to verify the disk it said that the hard drive needed to be repaired. Unfortunately I had lost the cd that origially came with my laptop so I bought a copy of snow leoppard (which is what I have installed on it) from apple.com. But when I try to boot to the dvd to repair it, it gets stuck on the apple logo and starts beeping in intervals of 3. I tried replacing the hard drive but the same thing happens. It only seems to boot from the original hard drive, I even tried creating an instal thumb drive from that same cd that also won't work.
Any insight would be helpful,
Tanks in advance,
Mike

You can get replacement System Install & Restore CD/DVDs from Apple's Customer Support - in the US, (800) 767-2775 - for a nominal S&H fee. You'll need to have the model and/or serial number of your Mac available.
If you're not in the US, you may need to go through the regional Apple Store that serves your location to find the contact number. Here's a list of links to all of those - http://store.apple.com/Catalog/US/Images/intlstoreroutingpage.html Another resource: International Support Phone #s.

T-21 laptop that won't "boot"

Similar Messages

Maybe you are looking for