Can't boot in single user mode

hi there,
i just found out that my MacBook1,1 1,83 GHz ignores Cmd-s, Cmd-v and occasionally Cmd-Alt-p-r. Green LED on keyboard doesn't flash at boot. I did a parameter ram reset and permission repair, without positive change.
The keyboard works fine with system booted.
thanks! achim

another permission repair helped..

Similar Messages

  • Freezing with blue screen & can't boot from single user mode or disk

    My keyboard is wired and plugged directly into my Intel iMac running OSX 10.5.8. I do not have the Leopard disks, but I do have the Tiger disks. I was trying to boot in single-user mode so that I could run AppleJack to try to fix another issue I'm having--I get the light blue startup screen flashed at me several times daily for the past week or so. When the blue screen flashes, it totally freezes my computer (obviously) and lasts from 1-10 seconds. I can't find anything that is triggering it. I haven't installed anything new that I'm aware of, and it happens whether the computer has previously been slept or not. I'm also not using an external display / additional monitor.
    Also, for anyone who is nice enough to answer, please explain everything--I'm not an expert user.

    Well since it is so time consuming and a security risk to turn off FileVault, I was hoping to hear from someone with more experience if this was the solution, or just something to "try"? Are you speaking from experience or just making a suggestion, leroydouglas? Thanks.

  • Can't boot in Single User Mode or zap PRAM on iMac G5

    I want to boot into Single User Mode in order to run Applejack to "clean" the system before applying Apple's latest security patches. So I hold down Cmd-S at start-up, but it has no effect; the computer boots normally into the Tiger GUI. Thinking that zapping the PRAM might help, I restarted while holding down Cmd-Opt-P-R. Same result: normal startup with no zap. I tried resetting the power management circuit by unplugging the iMac and depressing the power button. No effect.
    Apart from the inability to do special boots, the system seems to be running just fine. Any ideas?
    iMac G5 Mac OS X (10.4.8) 1.5 GB RAM

    Ben F-
    Not guessing yet. You did not provide what steps you have taken thus far and now I know.
    I am thinking then that you have somehow set up firmware password protection.
    At least the things that you describe are disabled if a password is set.
    Luck-
    -DaddyPaycheck

  • Can you run a bash script on boot in single user mode

    Hey guys quick question.
    Is it possible to run a bash script on boot in single user mode.
    I can create a file and dump it on the root hd.
    Let's call it repair.
    I can then boot to single user mode and run it by typing /repair.
    But I want it to do it automatically.
    Every time I go into my machines that I clean for my job. I have to run sbin/fsck -fy
    Then I have to mount the drive and then remove all cache files, then reboot the machines.
    I would like to automate this by just holding command s and then moving to the next computer.
    There must be some sort of boot daemon somewhere.
    Please help.
    Sincerely,
    John

    Have you seen Applejack?
    http://applejack.sourceforge.net/
    It doesn't start automtically, but does cleanup.
    Robert

  • Why can't I enter single user mode on my Mac Mini for an admin password reset?

    Hi,
    I recently created a new user account for my mac and deleted the old one, not realising that this was the only account with admin priveleges. As such, I no longer have access to administrator priveleges, and cannot grant them to my new user account.
    I have tried to boot in single user mode and recovery mode but neither command results in any reaction on the part of my computer.
    This thread follows on from a previous, unrelated disscussion:
    BDAqua: If you hold alt key at bootup do you see a lock in the middle?
    Yenots: No...what does this mean?
    BDAqua: If it did, it would mean Firmware Password Protection was enabled, which prevents booting in other modes, so that's not the problem, are you using a wired Mac KB, or Windows KB?
    Yenots: I'm using an 'Apple Keyboard with Numeric Keypad' [ http://store.apple.com/uk/product/MB110B/B/apple-keyboard-with-numeric-keypad-br itish ]
    If you find me here BDAqua, hit me with your knowledge!
    Any other contributions are welcome and, now we're under the right heading, will hopefully help other users who have encountered this problem.
    Thanks, Cristo

    Hi,
    Thanks for the link to MacPilot, and the sexy screenshot. I found an archived version for 10.4 on the koingosw website. That solves getting into single user/safe mode. Though I'd be interested to see whether sudo nvram boot-args="-s" will result in single user boot.
    As for creating administrator priveleges for my new user account, I've found a method which looks good:
         \single user mode\
         cmd-s
         \mount drive\
         mount -uw
         \open 'directory access'\
         lauchctl load /System/Library/LaunchDaemons/com.apple.opendirectory.plist
         \list users\
         ls /Users
         \change password\
         dscl . passwd /Users/<username> <password>
    I think that this method intends that if I change the root users password I'll be changing the administrator password  (as root is the only user with administrator priveleges), and subsequently be able to change my new user accounts priveleges using 'netinfomanager'. But I'm not 100%. Could you give me your opinion on this?
    Furthermore, three keys 'L' 'O' and '(' aren't working on my keyboard, which means I can't try this until I find an intact keyboard to borrow. I was thinking maybe a mod version of the above instructions would work in terminal using sudo, so I could use the keyboard viewer to type the missing characters. If you have any ideas on constructing such a mod I would be interested to hear them.
    Otherwise, Thank You for your help BDAqua! And enjoy your summer wherever you are.

  • Unable to boot normally - Always need to boot with Single User Mode

    Hi Community,
    Since last few days, I am unable to boot my Macbook Pro normally, running latest version of OS X Yosemite. When I boot, it goes to grey screen with Apple logo and progress bar, once the progress completes to 100% (after 5-10 minutes which is very longer than usual), it asks me to 'Select  language' which seems like fresh installation of OS X. In that case, when I click next and it doesn't detect my SSD (blank list of select installation disk/drive).
    After reading some threads, I found work-around and always need to boot into Single user mode (by pressing Command+S during power on) and then need to run following commands...
    /sbin/fsck -fy
    /sbin/mount -uw /
    "device is write protected" numerous times
    reboot
    and then only it loads OS X and displays login screen. This happens all the times and I need to follow above steps always to get login screen.
    How can I fix this?

    Please help me out here. I tried booting it off a USB flash drive with ATV flash but that gave me some errors and prompted me to login with username [email protected] with password frontrow
    But I am not sure how to get to login using a suitable input. I tried to telnet it using my PC over network but I dont think it has initialized anything (like wifi or network) at the prompt. Would it take USB keyboard input? All I can do is remove the power and restart it with the usb flash out and get into then get into the recovery loop. I am not sure replacing the hard-drive would help. Any help would be greatly appreciated.
    Thanks
    Sinu

  • How do I mount an external Firewire HD when booting into single user mode?

    Hi,
    How can I mount an external Firewire Harddisk from the Darwin Console, once I have booted into single user mode?
    I'm trying to make a backup of all my files and then re-install my iMac G5 since it doesn't start the GUI anymore and I haven't gotten any responses to my question here: http://discussions.apple.com/thread.jspa?threadID=1104762&tstart=0
    Thanks,
    Torsten

    ok, I executed the following commands:
    /sbin/fsck -fy
    /usr/libexec/registermach_bootstrapservers /etc/mach_init.d
    autodiskmount
    There were two messages:
    UniNEnet: Ethernet address 00:14:51:32:19:b8
    and
    Aug 29 20:55:29 launchd: server 2e3b in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[16]: exited abnormally: Hangup
    I don't know whether this has anything to do with the commands I entered.
    And since I don't know what the volume name for the external Firewire HD is, I typed
    ls -l /Volumes
    but the only volume that is being listed there is my iMac's internal HD.
    What should I do next?
    Thx!

  • Mac mini i5 mid 2011 always boot in single user mode...how to get out of this?

    my mac mini always boot into single user mode
    how can i revert back to normal boot screen?
    i tried formatting the hard disk and clean install of mac os x 10.9.2 but nothing change..
    pls help
    mac mini ...core i5 @2.3 ghz mid 2011 model
    thanks in advance

    Restart the computer with the Option, Command, P, and R keys held down. Release them upon the second startup chime.
    (110762)

  • Network / external access when booted in single-user mode from install CD?

    So I have this iBook with a semi-functional hard drive: can't boot from it (either normal or single-user), can't use it in Firewire Target Disk mode, can't fix it with Disk Utility, an overnight run with Disk Warrior seemed to be hung, etc, BUT if I boot in single-user mode from the install CD I can then mount it readonly and see at least many of the files on it.
    So now I want to slurp the important ones of those files off of it over the network (or in any other clever way anyone can suggest). I'm not a huge Unix or Darwin expert, so an exact set of commands would be appreciated. *8) A friend suggested to me that I might be able to 'init' it at a 'runlevel' that included the networking stack, but I dunno what that means. *8) Does the CD in fact include a full networking stack? Or anything else that I might be able to use to slurp some data from the hard disk before it gives up entirely?
    Tx very...
    Message was edited by: David Chess; annoying typo

    David
    I think Ronda was hoping you had the Tiger Instal DVD, which has a copy of Terminal on it.
    You said earlier that trying to boot into Target Disk Mode didn't work. Would it help you if you could? If so, I can show you how to do it from Single User Mode. I've done it, and it works, although admittedly I did boot into SU mode from my HD, not my Instal Disc (I have tried that, it also works, I just haven't done both together).
    If you can make use of this, post back and tell me what you get from which nvram when you are booted in SU mode from your CD. It's possible that command won't be available on the CD—so we need to check first. If it says "which: no such command", try ls -l /usr/sbin/nvram instead.

  • Failure to boot in single user mode

    Hi,
    I have an iBook G3 900MHz G3 running 10.4.6. 384MB RAM, ~25GB free disk space.
    it's running slow so I want to boot in single user mode and run applejack.
    the trouble is, it won't boot in single user mode. when I hold command-s or command-v it just boots right to the GUI.
    i've tried both command keys thinking that one might be broken.. no luck. I also have no trouble getting to single user mode on my G4 laptop.
    I have not taken steps to disable single user mode.
    any ideas?
    thanks a lot

    I think it would be worth a try to repair permissions and then boot from the Install disk to run Repair Disk in Disk Utilities. If you still cannot boot into single user mode after that, perhaps obtaining and running Disk Warrior can resolve the problem.
    Bob N.
    Mac Mini 1.5 GHz; iBook 900 mHz; iPod 20 GB   Mac OS X (10.4.6)  

  • Can't type in single user mode

    Hi,
    I am trying to fix a MacBook Air's hard drive and attempted to boot from single user mode to run fsck. However, when I get into single user mode I can't type a thing. No buttons on the keyboard work. I shut it down and tried doing it again but the same issue occurs. I tried again, this time connecting an Apple USB keyboard and it still wouldn't type. I booted from an external hard drive that had OS X on it and both the inbuilt and external USB keyboards worked absolutely fine.
    Does anyone know why I would be having this issue and how to rectify it?
    Cheers.

    Reinstall Lion, Mountain Lion, or Mavericks without erasing drive
    Boot to the Recovery HD:
    Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
    Repair
    When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu.
    Reinstall Lion, Mountain Lion, or Mavericks
    OS X Mavericks- Reinstall OS X
    OS X Mountain Lion- Reinstall OS X
    OS X Lion- Reinstall Mac OS X
         Note: You will need an active Internet connection. I suggest using Ethernet
                     if possible because it is three times faster than wireless.

  • Terminology question: "booting as root" vs. "booting in single user mode"

    Terminology question: "booting as root" vs. "booting in single user mode".  Are these terms interchangeable, or is there a subtle or not-so-subtle difference?  (Obviously something I don't do often.)
    Thanks in advance.

    Boot to Single user allows root access.
    It isn't "booting to root" as in Linux, but I think is as close as it gets.
    You can enable root from a normal boot:
    http://www.youtube.com/watch?v=Y-JEpDi-cME
    Interesting read:
    http://www.securemac.com/macosxsingleuser.php
    This is fun:
    http://osxdaily.com/2007/01/22/what-happens-in-the-mac-os-x-boot-process/

  • MacBook won't boot in Single User Mode

    My MacBook will neither boot up in Single User Mode nor in Safe Mode. Nor will it perform a PRAM zap. The key-combinations I use during boot-up are OK, because they work well on my iMac. Does anyone know why this is? And of course: how it can be solved?
    MacBook: white, late 2007, 13", 10.6.2
    iMac: early 2008, 20", 10.6.2
    key-combo's used: command-S / shift / command-option-P-R

    Called MacHouse, they supposed it could be Firmware-related. Since all software on the MacBook was up-to-date, a Firmware-update could not help me out. They advised me to remove the Mac's memory and reboot, thus forcing the Firmware to get a fresh grip on the installed hardware, including keyboards and the like. I don't understand the technical details of this, but it worked.
    Removing both memory-cards made the MacBook make panicky beeping sounds, but removing one of them, rebooting, then reinstalling it and reboot again did the trick. It will now boot in Single User Mode, Safe Mode and Apple Hardware Test.

  • Usbmultitouch debug report id is invalid when i boot in single user mode

    been having a problem for a few months where my track pad will not work at all when i start my mac.
    the only things that have worked so far to solve the issue is to restart the laptop, or on occasion to put the laptop to sleep and wake it up several times.
    booted in to sigle verbose mode and see the message
    AppleUSBMultitouchDebug: ReportID is invalid in AppleUSBMultitouchDriver::_deviceGetReportWithLookup
    AppleUSBMultitouchDebug: ReportID is invalid in AppleUSBMultitouchDriver::_deviceGetReportWithLookup
    AppleUSBMultitouchDebug: ReportID is invalid in AppleUSBMultitouchDriver::_deviceGetReportWithLookup
    AppleUSBMultitouchDebug: ReportID is invalid in AppleUSBMultitouchDriver::_deviceGetReportWithLookup
    AppleUSBMultitouchDebug: ReportID is invalid in AppleUSBMultitouchDriver::_deviceGetReportWithLookup
    rooting via boot-uuid from /chosen: 7C3431B-A5F6-3122-8A21-83882ABAAC92
    BLAH BLAH BLAH...
    Looked around and have found no help anywhere so far.

    I think it would be worth a try to repair permissions and then boot from the Install disk to run Repair Disk in Disk Utilities. If you still cannot boot into single user mode after that, perhaps obtaining and running Disk Warrior can resolve the problem.
    Bob N.
    Mac Mini 1.5 GHz; iBook 900 mHz; iPod 20 GB   Mac OS X (10.4.6)  

  • Booting in single user mode to trouble shoot grey screen the boot stops at "CODE SIGNING .... clearing CS_VALID" will not command c past - stuck

    booting in single user mode to trouble shoot grey screen the boot stops at "CODE SIGNING .......... clearing CS_VALID" - cannot command C past - just stuck

    Hi opjml0,
    Welcome to the Apple Support Communities!
    If your Macbook is starting up to the gray screen, I suggest the steps in the following article.
    Mac OS X: Gray screen appears during startup
    http://support.apple.com/kb/ts2570
    I hope this helps,   
    -Joe

Maybe you are looking for

  • How many years can an Ipod Touch last?

    Hello, I have a year old 16g 2nd Gen Touch. Was wondering how many years an Ipod Touch will last for. I realize you only get a certain amount of charge cycles but was hoping that my Touch would last for a few years or more. I realize that due to the

  • Error While Loading XMl Doc into Oracle Database 10g

    Hi all, I have a task that , I have to make a utillity by which we can load XML Doc into a Table. While searching on Internet i found following Procedure on ASK Tom CREATE OR REPLACE procedure insert_xml_emps( p_directory in varchar2, p_filename in v

  • Free accounts

    Hi all, How will you get track of total value of materials which are given as free?( because free goods will be cost to company) rgds Getz

  • How do I reclaim the "Other" space on a iMac?

    I delete files regulary and the "Other" section is still taking up 359gb

  • Does Weblogic 10 supports HTTP/1.0..?

    Hi, My application contains an executable client. This client when invoked calls a servlet in the server. This application is working fine in weblogic 6.1 sp3 now. Iam trying to migrate this application to weblogic 10. However, when I invoke the exec