Mac OS X Target Disk Mode Security Hole?

I just put my iBook in Target disk mode (as in held down T while booting, so that it appears as an external disk on my PowerMac G5 via a firewire cable) and my G5 has root (well, unlimited) access to the iBook's hard disk! No passwords asked!
I could just take anyone's computer and attach with a firewire cable.. and bob's your uncle, access to anyone's files! What's going on?!
Both Macs are on 10.4.3

If you are concerned about security, note what the second paragraph of the article: Macintosh: How to Use FireWire Target Disk Mode has to say:
Important: The computer will not go into FireWire target disk mode if "Open Firmware Password" has been enabled.You can find out about Open Firmware here: Setting up Open Firmware Password Protection in Mac OS X 10.1 or later.

Similar Messages

Using Mac Pro in Target Disk Mode Connected to MacBook Pro

Hi all,
I am trying to set up two macs to run off of the same monitors/keyboard/mouse/etc. I know about KVMs, but they are too expensive for my current setup.
I want to know if it's possible to run a 2006 Mac Pro in target disk mode connected to a brand new MacBook Pro 13" via a firewire to thunderbolt converter.
I would need to access the files, but also run the applications from the Mac Pro on the MacBook Pro.
Would such a setup work? Would I have to reboot each time I wanted to switch machines? Would there be a significant lag in the Mac Pro's performance?
Any tips or links to articles/etc. would be appreciated.
Thanks,
Nick

Hi Niel,
Thanks for the speedy response.
I should have clarified that I know that I can access the drive like a firewire drive. I'm more curious as to whether I can either:
1. use it's applications in target disk mode (based on your answer -- No, unless all the necessary system components are identical between the two computers).
2. Boot from the Target Disk computer as if it were a separate drive of my main computer. If so, since this is Firewire and not SATA, will I notice a severe loss of processing power?
Nick

How do I back up the Mac Pro with Target Disk Mode?

My Mac Pro's partition has become corrupt, and will not boot. After trying to resolve the issue, it would seem the only solution is to reformat the computer, and start again.
Nonetheless, I would still like to back it up. I have a MacBook Pro, a firewire cable, and an external hard drive connected to my MacBook. The partition is showing on the MacBook. However, Time Machine cannot back it up - It only sees my MacBook's partition.
Is there any program I can use, or heck, anyway with just Mac OS-X on the MacBook I could use to back up the Mac Pro partition?
Also, when I format the Mac Partition, I assume the Windows Partition will also be formatted? The Windows XP partition is working fine at the moment.
Message was edited by: Christopher.Foss

to be on the safe side. I would back up both partitions. that being said, if you try to erase the mac partition it shouldn't erase the pc partition. if that fails you could try deleting the mac partition and then re-adding it.
But if the drive is really scrambled you may have to re-partition the whole drive; witch would erase every thing.
You could try using disk utility to copy the drive as a disk image:
http://support.apple.com/kb/ht1553 explains how to do this in section "Instructions for backing up to an external hard disk via Disk Utility"
if disk utility fails you could try:
you could try carbon copy cloner
http://www.bombich.com/
or
Super Duper
http://www.shirt-pocket.com/SuperDuper/SuperDuperDescription.html
Message was edited by: TeenTitan

Can u boot from a Mac in target disk mode

I'm wanting to know if I put a Mac mini in target disk mode, can I boot from that Mac mini from my MacBook Pro. I'm wanting to set up a mini as a server but it may have to be the basic and ill install server on it but I prefer to do it without using a monitor. I'm curious to know if its possible.

You don't need a monitor with the MM, and neither boot in Target Mode. Like me, use screen sharing for remote access over the network:
On the MM, -> System Preferences -> Sharing, there check Remote Management and choose which user, if not all, may have access. If you're not the only one, you can limit access for each user under Options.
Under -> System Preferences -> Energy Saver, it makes sense to check Wake for network access.
Then you can log out from the MM, leave it sitting at the login screen and turn off or disconnect its screen.
On the remote Mac, open Finder and find the MM under Shared. Click in it, then on Share Screen. You'll need to enter the login credentials for your account on the MM, eventually save it to your Keychain. Then your MM's login screen should appear in a window on your remote Mac. You have now full access to the MM.

Target Disk Mode Backup

The hard drive on my 12" powerbook g4 is failing and I need to do an emergency backup. I've pulled all the important data off and now I'd like to make a disk image backup so that I don't lose my preferences, fonts, etc, etc.
I'd thought to do this by putting the powerbook into target disk mode, mounting the disk on a friend's powerbook, and then using her disk utility feature to create the new disk image on another, external drive. Her internal drive isn't large enough to hold the disk image.
But reading the apple how-to, it seems like you can't have another firewire connection active when you've got a computer hooked up in target disk mode. Is this so?
Is there any way I can create this disk image backup and get it on my external drive without booting up the failing powerbook?
powerbook g4 Mac OS X (10.4.6)
powerbook g4 Mac OS X (10.4.6)

Hi, oligopisto. Welcome to the Discussions.
The instructions for Target Disk Mode are very specific. I've not tried using a FireWire drive while having another Mac connected in Target Disk Mode. While Apple doesn't state the reason, I'd take them at their word. If the instructions state not to do it, I'd follow their advice.
I presume you only have one FireWire drive, that it's not partitioned, and that you've used that drive to save the data you've backed up from your PowerBook?
If that's the case, then here is a suggestion for an emergency backup procedure:
1. First, using your friend's Mac, see if you can create a disk image of the data on the FireWire drive that you can save on her computer. You need to do this to save the info you've already backed-up to the FireWire drive before proceeding.
2. Open the Get Info window for the FireWire drive and see if the "Ignore ownership on this volume" checkbox is selected in the General pane. If so, uncheck that checkbox.
3. Eject the FireWire drive from your friend's Mac (drag its icon to the Trash), then power off the FireWire drive and disconnect it from her computer.
4. Connect your FireWire drive to your PowerBook and power-on the FireWire drive.
5. Startup from your Tiger Install DVD.
6. Select Language.
7. After the Installer window opens, select Utilities > Disk Utility. You should see both the FireWire drive and the PowerBook's startup disk (e.g. Macintosh HD) in the column on the left side of the Disk Utility window.
8. In Disk Utility, select Macintosh HD.
9. Select the Restore tab.
10. Drag the Macintosh HD icon from the left column to the Source field in the Restore tab.
11. Drag the icon of the FireWire drive's volume to the Destination field in the Restore tab. Your FireWire drive will show up in the left column as:<pre>FireWire Drive Device Info
FireWire drive's volume</pre>The FireWire drive's volume is below and slightly indented with respect to the FireWire Drive Device Info. It's listed with the name of your FireWire drive. That's what you want to drag to Destination.
The first a screen shot in this article will give you some idea of what things should look like.
12. Select Erase Destination. Note: This option will result in the FireWire drive being erased after the next step.
13. Click Restore. Disk Utility begins to copy your entire Macintosh HD to the FireWire drive's volume. This may take several hours depending on how much data is on your PowerBook.
14. When Disk Utility has finished, Quit (Command-Q) Disk Utility.
15. Quit (Command-Q) the Installer. When prompted, select Shutdown to shutdown your PowerBook.
16. After your PowerBook shuts down, power off and disconnect the FireWire drive.
17. Check the files on the FireWire drive using your friend's Mac. If done correctly, you may even be able to startup her Mac from the Backup using Startup Manager. However, given that your PowerBook's hard drive is dying, you'll need to be satisfied with whatever you can get off of it. For example, if the OS on your PowerBook is corrupted, you might get your data files, but the drive won't be bootable.
18. Copy the disk image from your friend's Mac, created in Step 1, to the FireWire drive.
19. Eject the FireWire drive from your friend's Mac (drag its icon to the Trash), then power off the FireWire drive and disconnect it from her computer.
Your FireWire drive should now have both a copy of whatever could be recovered fro, your Macintosh HD and the disk image you created in step 1.
After you get your PowerBook's hard drive replaced, I suggest you implement a comprehensive Backup and Recovery solution. For advice on the backup and recovery solution I employ, see my "Backup and Recovery" FAQ.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

Help with Target Disk Mode

I'm having some problems starting up a Power Mac G4 into target disk mode. I've done it before, a couple weeks ago, but now every time I try it instead starts up into open firmware mode. I can't figure out what's going on, any help would be greatly appreciated.

Welcome to the forum.
Firstly, let's check a few things. Have a look at APPLE'S KNOWLEDGE BASE on how to do it. If that's what you're doing then report back.

Target Disk Mode with RAID Volume and Macbook Pro

I just received a MBP which I today intended to use to pull a netrestore image off our lab server. The latter is a Mac Pro with 2 RAID 1 arrays. I started the Mac Pro in target disk mode, hooked it up to the MBP and was expecting to see the RAID volumes to show up in the finder. Unfortunately nothing happened. I then started the disk utility only to find out that the volumes are shown but are not accessible.
Doing the same thing using our backup server (running OS X 10.4.8 server) works like a charm.
Is it possible that MBPs and/or the non-server version of OS X don't support target disk volumes off RAID arrays?
I used the same MBP as a target disk mode slave today and that, too, worked.

Hello BK:
Welcome to Apple discussions.
This knowledge base article will, perhaps, give you more information:
http://docs.info.apple.com/article.html?artnum=58583
Barry

No security for intel macs in target disk mode?

By putting an intel MacBook in target disk mode, all the files are accessable by another computer which can mount the disk. If my machine is stolen, apparently I have no security. I found one post that says intel macs actually have some firmware password protection, but I have not been able to find how to turn it on. The Open Firmware Password feature does not work on intel macs. This seems to be a really big loophole. Having a login password is worthless if your machine is stolen. If anyone can help, please point out where there is more information on this issue.

If your computer is stolen firmware password will not protect your data. Even if the thief can't turn off the password, the disk drive can be removed and connected to another computer. Passwords, and other information, stored in keychains are still safe, however. The only way to protect other data is to use Filevault, Be sure to have good backups, because any error can make all your data inaccessible (as would the theft of the computer, of course).

Mac Mini won't Boot after Target Disk Mode

We just bought a new iMac and used target disk mode via firewire from our older Mac Mini running OSX 10.4 to transfer data. Now when we go to restart the mini, the grey screen appears with apple logo and it seems to try to boot up but after a long time alway just ends up with a blue screen. I don't think I "ejected" the mini properly from the imac after the target disk mode transfer. Could the mini be stuck in target disk mode? I've tried to restart in different modes eg. safe mode, pram by holding down keys on start up but doesnt make a difference at all almost as if the keyboard isn't registering (and its a wired keyboard). Any ideas???
Thanks

Try starting up from the Recovery Partition holding the Option (Alt) key and see if you can Repair your Macintosh HD, as per > OS X: About OS X Recovery

Power Mac G4 stuck in Target Disk Mode

The other night I put my Gigbit Ethernet into Target Disk Mode so I could migrate my files to a newer machine (a mirrored drive door G4 with dual 1.42mhz processors). After the migration was complete (which took 9 hours), I tried ejecting the target disk but got a perpetual spinning beach ball and had to force everything off. Unfortunately, either because my newer machine came with a faulty Tiger installation, or my migration messed the installation up - the finder kept crashing and things such as "Get Info" wasn't working- I had to endeavor to get a working version of Tiger on the newer machine. I wanted to clone my older drive to my newer drive.
Futzing around for over an hour to try to gain access to my old Power Mac's hard Disc, which was still, according to the bouncing Icon on the screen, in target disk mode, I could not access the drive at all from the newer machine. When I tried, such as by double clicking on its desktop icon, by right clicking on the same Icon, or if I went into the system preferences to change the startup disk with the gigabit ethernet attached, I got the perpetual spinning beach ball. Also, I could not access the drive from the disk utility app that is on the Tiger install DVD. Luckily, I had a pretty fresh bootable backup of the gigabit ethernet on a firewire drive that I cloned to my newer computer. I just have a handful of files that I want to transfer from the gigabit ethernet if I had my drothers.
Am I screwed here? Is there a way to force my Gigabit Ethernet out of Target Disk Mode without hooking it up to another computer? If it's possible to get the Gigabit Ethernet to boot again successfully, I can transfer my file over my network. Any help would be appreciated.
Cheers

I am confused...it sounds to me like what you wish to do is to make an exact copy of the hard disk in your Gigabit Ethernet and apply that copy to the drive in your MDD, correct?
From what I understand, you are saying you cannot access your GE's hard disk using target disk mode? Or am I mistaken? Also, can you not boot up normally on the GE's hard disk? Is there something wrong with it?
The easiest way to clone a disk is to just make a disk image of the hard disk you wish to keep, and then apply that disk image to the destination disk. Disk utility can perform all this very easily, and pretty quickly. Of course, if you are having trouble booting in target disk mode, this can be a problem...
I'm still kind of confused on what exactly is the problem, and what you are trying to accomplish. Could you please explain a little more and answer the questions above? Much appreciated.

Can you install tiger on a power mac g4 with out a DVD drive if so how, I do have have a 2011 iMac can I use that in target disk mode with a FireWire cable any help would be appreciated

Can you install tiger on a power mac g4 with out a DVD drive if so how, I do have have a 2011 iMac can I use that in target disk mode with a FireWire cable any help would be appreciated

Hello,
You need to put the Tiger Install Disc in the 2011 iMac, boot the 2011 uMac into Target mode...
http://support.apple.com/kb/HT1661
Boot the G4 holding the Option or alt key, hopefully the Install Disc in the 2011 iMac will show as a boot choice.
We just want to use the 2011 iMac as a big expensive FW Optical drive, it cannot be installed osing the 2011 iMac itself.

Can a Mac Pro boot off a MacBook Pro in Target Disk Mode?

Summary: "Are you able to boot a Mac Pro off of a Mac Book Pro in Target Disk Mode?" OR "Will a Mac Pro boot off an OS X install that was made on a MBP?"
Details:
I'm finishing a music project that was created on a PPC G5 Quad computer and going to a studio in Santa Monica to complete the final mixdown. My 3rd party software plug-in configuration is unique, and the studio doesn't have all of the software instruments that I do on their 8 core mac pro. My G5 software installation is mirrored to my MacBook Pro, but the MBP doesn't have enough CPU power to play the project back.
Is it feasible to have the studio's 8 core Mac Pro boot from my MacBook Pros hard drive? Essentially, we'd be using my OS and software on their powerful CPU / hardware. I figure, since they are both Intel builds of OSX, this should be do-able.
I don't have access to the Mac Pro until I show up to start working.
Thanks for any input / suggestions!

The MacBook Pro boots fine in 10.5.8, and loads the Logic project without any faults. The only issue is that a CPU shortage occurs when you attempt to play the sequence.
Like you suggested, I performed separate UB installations of all the needed software on the MBP solely so I could move Logic projects from one computer to the next without a hitch. (Actually, DropBox does this for me). Migration assistant was not employed in this process due to the PPC / Intel issues you noted.
I didn't need to mention the G5 as it appears to have caused some confusion based on Kappy's reply, but I did want to explain my work flow thoroughly.
It sounds like booting the MacPro from my MBP is feasible. I'll mark this topic 'solved' and head over to the studio tonight. I'll post here any anomalies from the session (if any).
THANKS~!

Mac won't startup after Target Disk Mode

Hello all, i recently purchased a G5 Imac and attempted the Target Disk Mode for transferring files from my old G4 PowerPC Quicksilver. It took a very long time to get the disk to mount itself during this process but when it was there i did all my transfers and when done, ejected the disk. Without the firewire attached i have now restarted the PowerPC model and was stuck on the blue screen of death after the usual startup. After doing some CMD+V, CMD+S, CMDOPT+OF, CMDOPT+PR i have now been apparently made it even worse because now it just sits on the gray screen with the Apple. I can't seem to find my original discs for the PowerPC but have the new ones that came with the G5 readily available but doubt they work due to the intel differences but i could be wrong....any help folks? Thank you kindly in advance

i've changed out the battery to no avail. I have always had a secondary HD in my case and i was able to find my disks that originally came with my mac and installed a fresh version of the OS on the secondary. Everything seems to work fine there except now i'm running on a system 7 years old and the auto-updates aren't giving me any options to move closer to today's technology. as far as my main HD, i believe it is dead and that is the problem from the get go so i assume that i'm screwed there and will have to start fresh with this secondary HD now my main.

Connect 2 Macs w/ Firewire. Not Target disk mode.

I have a PowerBook and an early 09 iMac 24". I used to connected them via firewire to transfer files. Suddenly... the iMac won't recognize the PowerBook... but the Powerbook will recognize the iMac. Actually, the iMac does recognize the PB, but only shows the "drop box" folder.
Is there anyway to configure a firewire connection or something else I might have overlooked? I'm not interested in target disk mode.

Sorry to take awhile to get back to you. I had no experience with connecting two Macs with FireWire, except with TDM. But today I have played around with connecting my iMac and my Mac mini with a FW cable directly.
I assume that you did two things in System Preferences that facilitate this connection; 1. you have created the FireWire network in the Network pane, and 2. you have enabled File Sharing in the Sharing pane. The only other thing to do is make sure that you have selected Bonjour computers in the Shared section of the Sidebar pane of the Finder Preferences.
Then, no matter which style of windows you use for the Finder; icons, list, columns or Cover Flow, you should be presented with a Connect button if you highlight the other computer in a Finder window's Sidebar.

Firewire Target DIsk Mode Mac partition not Boot Camp partition

Hi I'm having issues starting up my Mac and would like to Firewire mount the drive then image it. However, when I do so the Boot Camp partition mounts instead of the Mac partition. I've tried using Disk Utility on the host machine to mount the Mac partition (it does show up in Disk Utility) without success, Is there anything I can do.
(Yes I have yesterday's Time Machine backup, but would still prefer to do a full image before wiping and installing the OS).

Are you talking about starting up one computer in Target Disk Mode and then seeing it with a second computer (and if so, which model computer and which OS)?
[How to use FireWire target disk mode|http://support.apple.com/kb/HT1661] includes description of hardware and software requirements.
[What to do if your Mac doesn't enter FireWire Target Disk Mode|http://docs.info.apple.com/article.html?artnum=75414], also read about [Open Firmware Password Protection|http://www.apple.com/support/downloads/openfirmwarepassword.html] which can disable Target Disk Mode.
[Technical Note TN 1189|http://developer.apple.com/technotes/tn/tn1189.html#TargetMode] - driver details for TDM

Mac OS X Target Disk Mode Security Hole?

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