Repair Permissions in Single User Mode

So, I have searched various posts and have yet to find anything that has worked so far. Hopefully, someone can still help. I recently made the mistake of changing my permissions on my hard drive. I clicked "Get Info" for the Boot volume and changed the permissions for "Everyone." I thought I had corrected it, but now when I try to boot, it just sits at the apple grey screen with the spinner and never loads the OS. Judging from other comments, this appears to be a permissions issue and all I need to do is repair the permissions which is why I ran through these commands in Single User mode:
/sbin/fsck -fy<return> --I did this twice to fix the drive
/sbin/fsck -fy<return>
/sbin/mount -uw<return>
/sbin/autodiskmount -va <return>
/usr/sbin/diskutil repairPermissions /<return>
sudo diskutil repairPermissions /
I am having to run through the Single User mode because I do not have the SL install disk. However, I have Windows installed on a Boot Camp partition and I can access files on the mac side but everything is read only.
I am a novice at the command line so any guidance on what commands might help to repair permissions would be great.

Found this for Leopard. Will probably work in 10.6
Run these commands and hit enter after each. Be careful with the spaces; keep exactly as written. There are various suggestions in this thread, which you might first want to check out, but this seems to be the most promising.
http://forums.macnn.com/90/mac-os-x/370223/changed-hd-permissions-mac-wont-get/
mount -uw /
chmod 775 /
chmod 1775 /
Then restart
BTW, not recommended to repair Permissions from the install disk, since if you've updated since installing, those will be out of date and incorrect. Permissions Repair should be done from the normal boot volume.
Message was edited by: WZZZ

Similar Messages

Repairing disk permissions from single user mode

I accidentally changed the disk permissions on my Macintosh HD to "none" for everyone, except system and admin, who both still have read/write/exec privileges. Now, my Mac won't boot up. What can I do to fix this from single user mode or verbose mode?

Hi,
if you reboot your mac and press Command -R you can start in recovery mode and repair the permissions.
here you can find how to proceed http://support.apple.com/kb/HT4718

Reset Permissions from Single-User Mode

I believe I have accidently removed the permissions from my iMac. I can access single-user mode and need desperately for someone to walk me through how to reset the permissions (I get a blue screen when I try to boot). Please help.

JMT001 wrote:
I believe I have accidently removed the permissions from my iMac.
what do you mean? what EXACTLY did you do? did you change permissions on the top level of the hard drive to no access?
if so see this link
http://discussions.apple.com/message.jspa?messageID=2087835
if it's something else explain what you've done.

Single User Mode Question

I use single user mode to do fsck because doing it on a live disk takes way too long. I was wondering if there is a way to repair permissions from single user mode. Thanks

1. what does AFAIK mean?
As Far As I Know
2. What I have gathered is that it is near next to y difficult to repair permission fro the CLI and single user mode.
Correct. You can't use diskutil because the disk framework isn't loaded. You can do it if you're booted from an install DVD, though.

How do i repair my hard drive in single user mode when disk is full?

Hi there Apple Community!
I have an old Macbook Pro 17" with an upgraded 500GB harddrive and 4GB memory. I'm running Mac OSX Lion.
Was hoping you could help me out. THis is the situation:
Long story short I spilt wine on my macbook and the screen went a bit blobby. Switched it off for a few days, removed the battery etc. etc. Opened it up cleaned out as much of the wine as possible, but unfortunately some of it came in behind the LCD, so now the screen has a nice red stain. Obviously I'm not going to try to clean that out of the LCD.
My Macbook Pro still worked for a few days after that, but then my harddrive gave up. I booted in the Recovery HD menu, verified the drive and I got the error "Keys out of order - This disk needs to be repaired, click Repair Disk." I attempted to repair the disk but got the error "Keys out of order - Disk Full Error - The volume could not be repaired".
Unfortnately of this 500GB I only have about 7GB free on it, as I have a huge iPhoto and iTunes library. I did make a TIme Machine backup of my user directory, but not the system files. I don't really want to do a clean install because:
1) I'm paranoid that there's something I did not fully back up
2) I don't want to have to download the whole Mac OSX Lion again. I should have made a USB bootable backup when I had the chance. I don't have access to a broadband connection.
What I feel are my viable options, are as follows:
1) I did buy a replacement internal 500GB harddrive, so I can probably try to make an image of the hard drive to this new drive, but not sure how. I believe it's through the Disk Utility with the "New Image" option but not sure how to go from there.
2) Start up in Single User Mode and delete some unnecessary files and re-attempt to run the fschk -fy utility again (I tried this earlier and got the same Disk Full Error). - the problem with this is, I'm not familiar with the command line and have no clue how to delete files. I don't know my way around Unix.
3) I can also probably attempt to make a Ghost Image or Acronis Image of the failed drive to this new drive, but not sure if Norton Ghost or Acronis True Image will be able to read this HFS drive - I believe it's possible as it's a simple hard drive clone.
If you can guide me in the best option - probably there is a better solution than my proposed ones above, I appreciate any feedback and comments you might have!

hi Baltwo,
So I ended up copying my user folder to another harddrive. I managed to download the whole osx lion again, reinstalled, and recovered my home folder using this discussion:
http://support.apple.com/kb/HT1428
I have managed to get all my files back. My iTunes library works fine, but my iPhoto library when I open it, get the following error:
iPhoto cannot be opened because of a problem.
Here's the error log
Process:         iPhoto [1540]
Path:            /Applications/iPhoto.app/Contents/MacOS/iPhoto
Identifier:      com.apple.iPhoto
Version:         8.1.2 (8.1.2)
Build Info:      iPhotoProject-4240000~8
Code Type:       X86 (Native)
Parent Process: launchd [209]
Date/Time:       2012-09-19 19:56:45.528 +0200
OS Version:      Mac OS X 10.7.4 (11E53)
Report Version: 9
Sleep/Wake UUID: 7948ABE2-5294-4F87-B6E3-777095A2F2EE
Interval Since Last Report:          4780 sec
Crashes Since Last Report:           9
Per-App Crashes Since Last Report:   9
Anonymous UUID:                      70117D38-03EA-4F9C-B810-50B743864B9E
Crashed Thread: 0
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Application Specific Information:
dyld: launch, loading dependent libraries
Dyld Error Message:
Library not loaded: /System/Library/PrivateFrameworks/iLifeSlideshow.framework/Versions/A/iLifeSlid eshow
Referenced from: /Applications/iPhoto.app/Contents/MacOS/iPhoto
Reason: image not found
I've done an Apple Software Update but it didn't find an update for iPhoto.
One thing to note is, this library was originally created on iLife 08, upgraded to '09 and it stayed on that version. It hasn't een upgraded to iLife '11. It worked fine on my previous install of OSX Lion. How do I recover the library without upgrading to '11 ?

Single user mode, Lost Admin Account, and Disk Permissions

Okay, so I have quite a few issues here. I will start from the beginning.
About a week ago, I tried to install some updates and I could not get the Admin account to work. I went to the users profile and noticed my Admin account was not there. Did a quick search and found Apple's outline of how to fix this via the Operational DVD and the root user. Tried this and it would never work, because as soon as I restarted the computer or changed screens it switched back to a standard account.
Next up, I went into the terminal to check the Admin User group. As it turns out it is not there. So I find a discussion on there that outlines how to rebuild this in single user mode and the Unix prompt. So, I print it off and try to restart in single user mode. After trying two different keyboards and a sum total of 8 to 10 times, I can't restart in single user mode to get to the Unix prompt.
One last thing, last night I went into the Disk Utility on the start-up DVD. I wanted to check the Repair Permission log and I got the following:
ACL found but not expected on "private/var/root/Library/Preferences"
ACL found but not expected on "private/var/root/Library/"
ACL found but not expected on "Network"
Thoughts?
Thanks for your help!
tpp

first, the ACL messages can be ignored. if you can't get to single user mode you can't fix your admin group. the only reasons that I know why you wouldn't be able to do that is
1. a defective keyboard
2. you have a firmware password set. have you? you'd have to turn it off before you can get to single user mode.
lastly when you restart in single user mode make sure you press command+s right after you hear the chime. do not press it too early or too late. lastly, I'm not sure which instructions you've found to fix the admin group but I have them in this thread
http://discussions.apple.com/thread.jspa?messageID=8011324

Macbook shuts off during start-up - can't get through safe-mode, single user mode (fsck -fy) and target-drive shows no problems when running disk utility repair

Hi everyone,
I'm simply all out of ideas on what to do - my best guess is the problem is not specifically hard-drive related since all the 'normal' fixes just won't work.
What could be the cause of my issue? The only way i've managed to keep the Macbook Pro on for longer than a minute is through target drive, where it seems to work just fine - i can access everything. To sum up everything:
1 - I tried resetting the PRAM
2 - I tried to go in to safe mode, it shut off before i could type the password
3 - I tried fsck -fy command from single user mode, sometimes i can get to actually typing it but mostly it shuts off before
4 - I tried to repair disk via target drive - success, no problems detected (and it didnt fix my issue)
5 - I reinstalled OS Mavericks.
The Macbook Pro previously had some problems with the power-button not working properly (a mac-cunning friend of mine had to open up the mac and start it by swiping to metal pins on a specific (battery/power?) part inside it. The problem kinda went away afterwards but it might be related to this?
This is way off my comfort zone of 'diagnosing' issues, so I'm crossing fingers for some good advice.
Thanks,
Aske
Denmark

I think you're right.
If it's hardware related, is it possible to guess at what it might be? It would be nice to know how much I should expect to pay for a repair before actually getting it fixed.

Data back up from Single User Mode

Hello,
I have a problem with my 700 MHz iBook, dual USB, with OS X 10.3.9.
Unfortunately the OS doesn't start up because of "overlapped extent allocation" problem...
I would like to re-install the complete OS but before doing it, I would like to back up some directories.
Is it possible to save some data, by connecting an Ipod or some sort of external peripheral, from the Single User mode?
If yes, how can I do it?
Thank you in advance from your kind support.

Before giving up the ghost check out these:
http://docs.info.apple.com/article.html?artnum=25770.
Manually fix Overlapped Extent Allocation Errors without Disk Warrior
Overlapped overlapped extent allocation errors can be the bane of any Mac user's existence. Often, these errors go unnoticed until the problem becomes visible: your Mac might refuse to boot, crash unexpected, or worse, critical data might disappear from the Finder. Disk Utility can detect, but not fix overlapped extent allocation errors, and certain third-party utilities, such as Alsoft Diskwarrior, can fix them, but generally without reporting the consequences.
Overlapped extent allocation error occur when the file system thinks that two files are occupying the same area on the hard disk, hence overlapping on the same "inode," which is the structure which holds the location of the data blocks the file occupies, and also file permissions and flags.
Clearing the "overlapped" or "overallocated" extent allocation essentially means that you'll have to lose some data, because the only way to remove the overlap is to delete the file that's occupying the inode. So, if you suspect, or find out, that the guilty file is a critical system file that resides in one of the hidden system directories such as /etc /var /usr/ or visible system directories such as /System or /Library, and you don't want to reinstall the whole OS (which might not fix the overlapped extent allocation anyway), it's good to have another disk available to copy the files back to your original disk if necessary: a second bootable hard drive or a firewire drive connected to your Mac when you remove the misbehaving file. Just make sure that when you copy the file back to your boot disk that the permissions are correct, so it's best to use the "ditto" command, so that all sticky bits, flags, and permissions are preserved.
In case you didn't know, you don't have to boot from an install CD in order to check for overlapped extent allocations. All you need to do is restart your Mac, while holding down command + S to boot in "single-user mode."
At the command prompt that appears, type:
$ fsck -fy
If you have an overlapped extent allocation, you'll see:
"Overlapped Extent Allocation" (File 123456d)
No matter how many times you run fsck -fy, you'll never be rid of the error.
So, simply issue the following command:
find / -inum 123456 -print
Note the "d" was dropped, or any extra letter that appears after the inode number.
The find will return a file name that matches with the inode number, and the path to that file. If you remove the file then the fsck will not return this error next time you run it.
However, before you can delete the file(s) in single-user mode, you'll need to mount the file system. Type:
$ mount -uw /
When done, issue the "sync" command, and that will flush the write cache so that all pending writes are written from memory to the disk. Also, since most OS X 10.3 Macs use the HFS+ Journaled file system, it might be a good idea to disable the journal before booting into single-user mode by typing:
$ sudo diskutil disableJournal /
then re-enable it when done fixing the overlapped extents and rebooting normally:
$ sudo diskutil enableJournal /
Chris Anderson is a long-time Linux propellerhead who just got his first Mac, an ibook G4, and can't keep his hands off of it. He currently works as a "The Architect" and general visionary for a maker of world-class collectibles.
If you own Disk Warrior then it should be able to repair a drive with overlapped extents.
There are two backup utilities included in Unix - psync and rsync. You will find them in the /usr/bin/ directory. For documentation simply enter: man psync or man rsync. In order to write data while in single-user mode you need to issue the command: /sbin/mount/ -uw / (Note: there is a "space" between the "uw" and the "/".) To mount an external drive you will need to provide the mountpoint for it in place of the "/", e.g., "/Volumes/volname") without the quotes.

I changed my wheel group properties to no access at top disk level. I messed up, how can I change back in single user mode "command s" as I am now in Thailand and not able to access startup disks?

I messed up, I changed my "Wheel group" properties to No Access ( or something other than the default) at the top level of my startup disk "Macintosh HD".   Now my computer won't start up, I just get the spinning wheel of death.    I also am in Thailand right now, so I cannot go to a Genius at an apple store, nor do I have startup disks available.
So I was hoping there was a way to change back the properties of my disk (Volume) in single user mode (via Command +s) during startup, i.e. can I do a chmod command on the Macintosh HD listing under the Volume Directory.    Or where do i fix this?   Is it fixable without startup disks, etc...
THANKS FOR ANY HELP!!!!
If you could also please let me know you have an answer, I WOULD REALLY APPRECIATE IT!!!
thanks so much
mark
<Edited by Host>

Thomas,
Thanks for the info on command-R, didn't know about that!!!
Yes I changed the sharing "Wheel Group" permissions on my hard drive via Get Info.    But that's all I did.    And then most of the apps wouldn't respond with anything.    So not knowing I did something stupid, I decided to re-boot, and then nothing but the Wheel of Death at startup.
I was trying to limit access to my computer on this network, changed my public folder settings, and then I thought why not the whole hard drive, but at that time I had no idea what the "Wheel Group" was... so I shouldn't have touched it, BUT IT DID ...... argggggg....
I managed to go to an internet cafe & research the problem yesterday.    I used the command +s single mode to get in, and then did the necessary steps to mount the drive so I could make changes.   I basically did this:
Boot into single-user mode (boot while holding down CMD-S)
Follow the on-screen instructions to mount the file system as read-write (a fsck command followed by a mount command)
Type the following: "chmod o+r /" followed by "chmod o+x /"
Type "exit" to leave single user mode and complete the boot sequence.
I found it at this link http://forums.macrumors.com/showthread.php?t=416180
It worked... thank God!!!   Well so far so good.
I was going to try my own fix by chmod on the Hard drive listed under Volumes directory, but that doesn't seem to match the info under Get Info Window.    So I just used the fix above.    I probably should now go and do "Disk Utility - repair permissions", however I am a little gun shy right now, so I will probably wait until I am back in the States so I can go to an Apple store if it messes up.   Right now I'm following the "if it ain't broke, don't fix it" MOTTO...
So Thomas I just wanted to say THANKS for replying so quickly, and I really appreciate your help!!!
(yes I know I shouldn't have used my email addresses, but I WAS DESPERATE, but that's still no excuse)
Hopefully maybe this thread will help someone else out in the future....
Okay, thanks again!
Mark

Single User Mode: Searching for root...

My 2 year old unplugged my PowerMac iMac G5 (single) and now it won't start up.
I was finally able to boot up off of Disk Warrior and replace the directory, but it won't start up past the gray Apple screen. The fan comes on after about 45 seconds and blows hard. Then, I get the circle with a line through it, in gray. I've never seen that on a mac.. the international "no" sign.
When trying to start up in Single User Mode, I get a long list of stuff either disabled, not found, missing etc and then it starts writing to the screen every 30 seconds a line like:
Still searching for root.
I've tried pulling the back off, resetting the SMU, starting up in Safe Mode, etc.
This has happened with storms before and I can usually get it back.
I don't have original install discs.

When you say you have "OSX" but not the "original install disks" do you mean the mac originally came with an earlier version and you don't have those disks, but you have a retail copy of Tiger?
The circle with the slash means that Open Firmware cannot find BootX. Basically, I think this means that Open Firmware recognises the startup volume as such but cannot hand control to the operating system at all. BootX is what it uses to get the operating system going. Without this, as you've seen, you cannot make even single-user mode.
What is SMU?
*Is your data backed up? If not, prioritise that unless you can afford to loose it.*
Does DiskWarrior repair permissions? If not and you have the Tiger retail version, try running Disk Utility to do that. I don't think this will help, but it won't hurt.
Do you have another Mac? If so and you have the retail Tiger, you might be able to use Pacifist to replace BootX (in /System/Library/CoreServices). Alternatively, if the other Mac is running the same version of the OS and is also a PPC Mac, you could try copying the file from that machine.
Before you do any of this (with the exception of the permissions repair), try to backup any data you need if that's at all possible.
- cfr

How do change boot disk from single user mode?

My G5 hangs when booting at the blue screen while "Loading printing services...". Attempting to boot into safe mode only hangs at the grey gear screen. It will, however, successfully boot into single user mode. I've run fsck but no change in bootability. I have another disk in the machine that has Tiger on it. How do I change the boot disk from the single user prompt?

You can hold c and boot off the installer disk and select disk utility repair disk/permissions
or you can hold option to boot off Mac OS X on another drive, like a clone and run Data Rescue to recvoer your files.
It does sound bad, you can try going through these
http://docs.info.apple.com/article.html?artnum=106464
But I think you'll need a fresh install, hopefully you have been backing up/cloning to a external drive.
http://homepage.mac.com/hogfish/Personal11.html

Ibook left hanging! Got info from single user mode - can u translate?

Hi, am panicking here so help really appreciated!
Got my ibook, G3, 17" screen. It won't start up. It goes as far as the spinning circle of lines. Tried to get into single user mode (got Applejack there) but it ends up saying 'we are hanging here'.
The lines previous to that include the following (don't know if any of this is useful as don't really understand it):
nfs_mountroot failed: 9
nfsboot: ntworking not initialised
panic (cpu0): nfsbootinit failed with 6
latest stock backtrace for cpu0:
backtrace:...lots of numbers here...
Proceeding back via exception chain:
exception state:....lots of numbers here...
Kernal Version:
Darwin kernal version 7.90
dates and release info here.....
No debugger configured - dumping debug information
MSR=00001030
latest backtrace for cpu0:
Backtrace:...
...and then it repeats most of that again until it says:
panic: we are hanging here
and I can't type anything. The cursor just sits.
Have also tried disk utility when booted from cd. It tries to verify the disk but says:
Catalog file entry not found for extent.
The volume needs to be repaired.
Volume check failed.
Error: the underlying task reported failure on exit (-9972)
1 volume checked
0 HFS volumes verified
1 volume failed verification
And it says the same when I try and repair the disk. Do I need to erase the disk? I do back up regularly onto zip disks.
Tried to reinstall system software but when you are prompted for a place to install it onto, there are no disks shown!
How bad is it????
nikki
ibook G3, 700mhz Mac OS X (10.3.9)
ibook G3, 700mhz Mac OS X (10.3.9)

Hi, Nikki.
What happens if you try to start up in Safe Mode? This will take awhile longer than a normal startup because it does a file check and repair of the hard disk.
If this works you will see your normal desktop. Once completely started up, try to restart normally, and go to Applications/Utilities/Disk Utility and repair permissions on the hard drive.
Here are some links on kernel panics and what to do about them:
http://www.thexlab.com/faqs/kernelpanics.html
http://www.macmaps.com/kernelpanic.html
http://discussions.apple.com/thread.jspa?messageID=607531&#607531
http://docs.info.apple.com/article.html?artnum=106805
Hope something there helps.

Backupping from single-user mode

I am currently only able to use the single-user mode, and am looking for possibilities to take some backup of certain files before I venture reinstalling or something.
Is it possible to write to disk from S-U mode? How?
Can I do it in another way, e.g. create a new partition? How?
I need to be enlightened

Yes, I used the install CD. Verification said my disk was OK. There were some inconsistencies with permissions, so I repaired those, but my problem still persists (se thread "Authentication error???"), so I am still interested in backupping before I try Archive & install or something.

Yosemite only boots in single user mode?!

Hello everyone,
for a few weeks now I've had issues with unresponsive wakes and whatnot but now it seems my machine has detiorated within a short walk home.
First off my specs:
MBP 13" mid 2012
Core i5 2,5Ghz, Intel HD4000
2x 4gb Ram 1600MHz
Samsung 840 Evo 120Gb SSD
As I said, within 20 minutes of carrying the laptop around the performance deteriorated drastically. When I opened it up back home it was incredibly slow and unresponsive. Opening Applications or even just folders takes about 30-60 seconds. Same applies for using the brightness controls for screen and keyboard, or the volume buttons. After some 15 minutes the System will completely stop to react to startup attempts of applications.
I tried the following troubleshoots while searching the forums as I understand this is a common problem in Yosemite:
- boot in safe mode ( worked once, but with the same problems of unresponsiveness, after a second try booting hangs at the usual 50%)
- reset SMC
- reset NVRAM ( PRAM?)
- try to repair the disk via disk recovery ( cmd + r)( repair failed and Volume vanished from the list - after that only internet recovery was available) ( also of note: today I brought my SSD up to its limit by installing unreal engine 4. I deleted it expecting to see an improvement, which I didn't get. Still, after deinstalling it the Volume showed a 99% utilization in disk recovery)
- starting single user mode and this is interesting. First it shows the following without any input:
Warning: Couldn't block sleep during cache update
Warning: Proceeding without DlskArb
rebuilding .../Caches/com.apple.kext.caches/Startup/kernelcache
pci pause: SDXC
IOBluetoothHostControllerUARTTransport.kext has no Info.plist file.
IOBluetoothHostControllerUARTTransport.kext has no Info.plist file.
IOBluetoothHostControllerUARTTransport.kext has no Info.plist file.
IOBluetoothHostControllerUARTTransport.kext has no Info.plist file.
IOBluetoothHostControllerUARTTransport.kext has no Info.plist file.
kext file:///System/Library/Extensions/JMlcromATA.kext/ is in hash exception list, allowing to load
Child process / user/sbin/kextcache[6] exited due to signal 11.
Error 107 rebuilding /System/Library/Caches/com.apple.kext.cashes/Startup/kernelcache
then it proceeds to boot into the same unresponsive mess as before.
- In the finder I tried to repair disk permissions and again the volume itself to no avail.
I really have no idea what to do about it at this point. I can recreate this scenario and reliably boot this way but the system is painfully slow and impossible to work with. Sorry to bring up this topic again since there have been so many posts on similar problems but none of the aforementioned solutions worked for me.

Please do the following:
Install or Reinstall OS X from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard 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.
Erase the hard drive:
1. Select Disk Utility from the main menu and click on the Continue button.
2. After DU loads select your startup volume (usually Macintosh HD) from the
      left side list. Click on the Erase tab in the DU main window.
3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on
      the Security button and set the Zero Data option to one-pass. Click on
      the Erase button and wait until the process has completed.
4. Quit DU and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Install button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
           because it is three times faster than wireless.
This should install the version of OS X that you had installed.

Mount external Hard drive in Single user mode

Do any know how to mount an external hard drive in single user mode:
I've issue the following command:
/sbin/mount -uw /
mkdir /Volumes/ex1
/sbin/mount_hfs /dev/disk2s3 /Volumes/ex1
(I've checked my external hard drive using df -k showing the device is disk2s3)
Result:
Permission denied

I seem to remember the "Permission denied" or "Device busy" coming up in some situations but not others when attempting to mount drives at this early stage in "single user" mode...
It might be worth trying to run:<pre>sh /etc/rc</pre>This is actually present among the "Tiger" messages in "Single User" mode, as the procedure to continue booting but remaining in "single user" mode. Indeed, it seems to start up the usual "services" like starting disk arbitration (so you can eg. use 'diskutil' to repair permissions, or loading "NetInfo" so you don't need to work in '-raw' mode - in the past, people had posted complicated procedures for doing these things manually.
After running the 'rc' script, try creating your mount point and and running 'mount_hfs' as usual...

Repair Permissions in Single User Mode

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