Mistakenly changed ownership/permissions to No Access on external Lacie.

I thought I was making no access for other Users on my G5. However, after speaking with Lacie I have instructed my OS to not allow any access. I tried the following from Kappy I saw on an almost identical post:
To fix this:
1. Launch Terminal, which resides in the Macintosh HD > Applications > Utilities folder.
2. At the Terminal prompt, type the following command:
sudo chmod a+rwx "/Volumes/partition_name"
where: partition_name is the name of the affected partition.
3. Press Return.
4. Type your Admin password when prompted, then press Return.
5. At the Terminal prompt, type exit and press Return.
6. Quit (Command-Q) Terminal.
7. Relaunch Finder: Press and hold the Option key, click and hold mouse button 1 on the Finder icon in the
Dock, select "Relaunch" from the Finder icon's contextual menu.
Did not work..says there is no directory by that name.."Lacie"...

No..it was connected to a G4 PMac..and I transferred all of my HD on the G4 to the G5 via fireware and the apple migration program. Then all I was trying to do was get the Lacie oriented to the new HD on the G5..I did..added the new name of the "source" and did the complete updated backup. Thereafter I realized that the Lacie was vulnerable to my wife's possible mistakes so I wanted to limit the access...
I did what u said..the alias disappeared...I turned the power back on and did the volumes again and it was there again..I went to trash it and it said I do not have sufficient privledges..I am sorry to take so much of your time and appreciate what your doing..

Similar Messages

Changing Ownership & Permissions caused Volume to Disappear

When changing "Ownership & Permissions" on one of my volumes, under ""Ownership & Permissions > Details > Others" I selected "No Access." As a result the volume has disappeared from the desktop. As a result I cannot access it even though I am the Administrator. How do I get the volume to reappear again on the desktop so that I can change the "Ownership & Permissions" back to normal? I am using OS 10.4.9. Thank you.
eMac Power PC G4 Mac OS X (10.4.9) 800 MHz, 512 MD SDRAM

Follow the instructions in the section of this FAQ which is relevant to your situation.
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Can't see external HD partition on finder, changed Ownership & Permissions

Hi all, a friend has a particular issue with his external HD. He clicked one of the partitions on his external HD and started restricting the options under Ownership & Permissions, until he got ALL permissions set to "no access". Now the HD appears, but the partition he modified does not appear on his desktop or finder, also when he runs Disk Utility he sees both partitions, but the one he changed the permissions/access of, appears as a blank document icon, like when the OS doesn't know with what to open it with, therefore, he can't select it again and click get info/change access again. Any help, tips please? Thanks in advance mates.
MacBook Pro 15", 1.83 GHz, 1.5 GB, 80 GB iPod 5G 30GB White Mac OS X (10.4.6)

Use the instructions in this FAQ to restore access to that partition.
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How can I change the permissions on a read only external HD

I have a WD external HD and I am transferring a file more than 4GB in size. The current partition scheme supported by Ma, being FAT 32, supports only up to 4GB in file transfer size. If I format the external HD on my PC in a NTFS file format it is supposed to handle file transfers bigger than 4GB. Which is true, but it only goes one way, so for example if I am transferring a file from PC to HD to Mac it works just fine, with a few minor hickups, but the other way it does not work at all. So if I want to add anything onto the external HD being hooked up to my Mac, and still being in NTFS format I get a message saying that I do not have sufficient privileges, and under drive info it says that it is read only. Any help on the topic, please.......All the best
Rafcio

Hi Rafcio
I get a message saying that I do not have sufficient privileges, and under drive info it says that it is read only. Any help on the topic, please
Basically, this is not a privileges problem, it is a limitation of the formats. OS X can read NTFS, but not write it. See How to transfer data from a PC to a Macintosh:
Mac OS X 10.3 and 10.4 work with local NTFS-formatted volumes. The volume will be read-only.
… and Boot Camp 2.0, Mac OS X 10.5: Frequently asked questions:
Mac OS X can read and write FAT volumes, but only read NTFS volumes.

Why is the date changed when I move files to an external drive

The date of my files is changed when I move them to my external Lacie drive.
Is there a way to prevent this?

Hi Luuk, and a Warm Welcome to Apple Discussions and the Power Mac G5 Forum!
This may be of interest
http://discussions.apple.com/thread.jspa?messageID=1463652#1463652
The date is retained in 10.4.8 here, on both a copy and a move to an external firewire drive.
Repairing Permissions in Disk Utility was another fix.

Accidently changed the "ownership & permissions" access admin setting to "read only"

In the "Get Info" window on my MacBook hard drive icon, I accidently changed the "ownership & permissions" access admin setting to "read only" & now it won't re-boot the operating system. Just displays the Apple logo & running wheel on a white screen . Any advice on how best to re-set/restore would be very much appreciated, thanks

This might help. Otherwise, it might be necessary to reinstall.
https://discussions.apple.com/docs/DOC-2240

Task or script to monitor file ownership, permissions and change as needed

I'm using a Mac OS X Tiger (10.4.9) computer as a file server for a group of people who are (1) individually non-administrative users and (2) members of Groups. The hard drive is partitioned into 2 volumes: Vol1 has no non-admin access, Vol2 has a Shared folder containing folders with files intended for either Public or Private access. I'm admin with UID=501 and trying not to be a danger. Each other user has a unique UID. Each Group has a unique GID. The folder that all users have access to is named Pub_shares. Every user allowed to access Pub_shares is a member of PubGroup (GID=505).
Now when a user accesses a file nested in Pub_shares, that file usually becomes owned by that user and the group membership may change from PubGroup and may undergo a change to "Read only" or "No Access." Since all members of PubGroup should have Read & Write access to files in Pub_shares, this is a problem. All files in Pub_shares, regardless of who last touched them, should remain:
Owner = chris / Access Read & Write
Group = PubGroup / Access Read & Write
Others = No Access
I've read some about Ownership & Permissions. I've seen it suggested that an admin set up an automated task, say to run every 3 minutes; that task checks file ownership and permissions and, if different, changes the values recursively to those shown above, such that:
Owner = 501 / Access = rwx
Group = 505 / Access = rwx
What do I need here? An Automator workflow? A shell script? AppleScript? Cron? launchd? How do I put this together? I don't know the syntax or the expressions to use. Any help is much much appreciated. [Note again: My "server" runs Tiger 10.4.9.] Thanks.

..."I have some Windows users (trying) to access shared files. Will the afp inheritance options stand up to a Windows user?"...
No the afp inherit settings won't apply to windows sharing, but I think there are equivalent settings that can be applied to smb.
..."I thought, too, I'd read somewhere that inheritance options use the topmost volume folder to set inheritance patterns."...
I am not able to double-check this for Tiger, but I don't think that is the case. As far as I know, with those settings enabled (and it doesn't work reliably if only one is enabled) permissions and ownership should be inherited from the folder that the items are added to.
..."My topmost folder on vol2 is "Shared" but it contains both Pub_shares (accessible by members of PubGroup) and a few Private_shares (folders accessible by members of various private groups)."...
Sorry I missed that point in your earlier post. The above would cause complications if a user were to move items from the private area to the public area. The inheritance only applies to when files are created, so something moved from the private area to the public area would retain its original permissions. To make it work, the public and private areas would have to be set up as separate shares, rather sharing the whole volume.

My MacBook w/ OSX 10.6.8 cannot access my external Time Machine Backup USB Drive. It says it is a Read Only drive. When I went to change permissions I found all pernissions were listed as "Custom" and I could not reset them to "Read Write". Any help!

My MacBook w/ OSX 10.6.8 cannot access my external Time Machine Backup USB Drive. It says it is a Read Only drive. When I went to change permissions I found all pernissions were listed as "Custom" and I could not reset them to "Read Write". Any help would be appreciated.

This can be done easily with ethernet.
Please follow the instructions strictly.
To make it easier I want you to do this overnight so you can turn off all your current connection to the internet.
Just go to the airport fan in to the top right and turn airport off.
Get ethernet cable and connect the laptop to the TC lan port.. ie <-> ones.
Press and hold the reset on the TC for about 10sec. until the front led flashes rapidly.
Open the airport utility.. go to manual setup and change the wireless to off. (so other people around you cannot join your network of one).
Ignore all the errors.. they won't stop the backup working.
Go to the TM and reselect the backup target disk as the TC.
It should start after 2min and run through to completion.
That is it.. for a backup of many GB it might take a few hours.. so make sure the laptop has power plugged in and the sleep is off.. (on early ones I think this is needed but I am a late arrival to the scene).. sleep doesn't affect later OS.

System Folder errors after I changed all permissions on HD to read & write

Hi,
Two things may have caused probs on my new 2010 iMac (Snow Leopard), and Applecare is shut so I would really appreciate some help as I have urgent work.
1) INCORRECT PERMISSIONS
I have been stupid. I clicked on Macintosh HD and changed all permissions to read & write because I wanted to be sure I could open and edit all documents on other computers.
I ran Disk Utility Repair Permissions from the install disc, but I am still getting system error messages, and my HP printer won't work.
The first message, in Repair Permissions, said: Warning: SUID file System/Library/Cores has been modified and will not be repaired. I have read a support doc on this which says no need to worry but I don't like it and would like to fix this.
More importantly, my HP printer won't work, displays error beside the document in print dialogue box.
Deleting the printer and readding it didn't work, so I downloaded new drivers and tried to install them, which is when I got the second system error message: System extension System/Library/Extensions/BJUSBLoad.kext was installed improperly and cannot be used. Please try reinstalling it or contact product's vendor for an update.
I checked the permissions on the file and they were still wrong despite Repair Permissions, allowing everyone to read & write. So I have now clicked on the entire System folder and changed the permissions to: System read & write, admin read only, everyone read only.
Will this fix it or do I need to do something else, such as check ownership, to make sure all permissions on the computer are now correct?
2) MEMORY STICK SHUT DOWN MY IMAC
Additionally (though I don't think this had anything to do with my problems), I inserted a Sandisk USB memory stick the other day and it immediately shut down the computer. When I inserted it into my Macbook it initially rejected it and gave me a message saying the device wanted too much power so it had ejected it to prevent damage to my computer. When I tried again it was OK. I totally reformatted the stick in case there was something harmful on it, but should I now bin the stick as faulty? Scared to use it again.
3) IS IT BEST TO REINSTALL ENTIRE SOFTWARE?
If I do a reinstall of all the software from the install disc, will it wipe out all my data, such as Mail, documents, bookmarks and other apps?
I would back-up, but if I try and back up files on my external drive it will automatically do a Time Machine back-up and I don't want to do that in case it backs-up all the corrupted files. Otherwise, I wouldn't mind starting again just to be sure all is well.
Expert advice would be very much appreciated.
Thank you
Sarah

Oh, silly really. I was in a hurry and working on docs that I needed to take to the office and open on another computer there.
But when I checked the permissions on the doc it said I could read & write but everyone else was read only.
I thought if I opened it on another machine I'd be stuck with read only access and not be able to work on there. I think I couldn't change it, so I thought to avoid any future problems like that I would change everything on machine!
Yikes. Won't do that again
Sarah

Change ownership from "system" on mounted volume?

I have an external firewire drive with 3 partitions all of which are mounted on an iMac, and which until recently all had the same ownership and permission settings under my admin account. One of the volumes (the one storing all the users' iTunes songs) somehow changed ownership to "system" and group to "wheel". I can no longer access the volume nor can the other user accounts on the iMac, although it shows up as a mounted volume when viewed in Disk Utility. "Repair permissions" is unavailable for this volume in Disk Utility. The other two volumes are unaffected and retain the original ownership settings. I'd like to reset ownership from "system" to my admin account, but do not know how to do so as apparently it needs to be done through unix commands using Terminal. What do I need to do?
iMac Mac OS X (10.4.8)

"...under Ownership & Permissions, click on the lock, enter your password, and change the Owner to you, with R&W access and the Group to admin, also w/R&W access, and click o Apply to enclosed items. Click the lock and close the Info window. No need to use Unix commands in the Terminal app."
I first tried that approach but unfortunately the procedure does not work. Under Ownership & Permissions it says "You have No Access". I can click on the lock and select my name under Details: Owner, but once I click to relock, Owner just reverts back to "system".

Changing Sharing & Permissions on a Mac OS Extended External Drive

I'm using ChronoSync to back up to 4 external hard drives. Three of them were formatted as Mac OS Extended (Journaled), while the 4th is not journaled. On the journaled HD's, I can change the privileges for me, staff and everyone in Get Info; I can also check or uncheck "Ignore ownership on this volume" on 2 of them. My Time Machine volume doesn't have the option to ignore ownership. My issue is that changing privileges on the Mac OS Extended volume is grayed out, and the box to ignore ownership is checked. Therefore, Chronosync cannot write to the volume.
I could try to use chmod in Terminal to change permissions on this volume, but I don't know the syntax to get to a mounted volume (I know they're listed in /Volumes).
So I have two questions:
1. Does this issue indicate a substantial difference between journaled and not-journaled Mac OS file systems?
2. What is the syntax in Terminal to change the permissions on the volume (name is Video Backup) so that I can at least uncheck the "Ignore ownership on this volume"?
I apologize if this has been asked and answered elsewhere on this forum, but I wasn't able to locate such a discussion.
Thanks,
Nick
Message was edited by: nickditoro

Hi mackjack,
The commands Niel posted were to regain access to a drive not to change existing permissions. Nonetheless, I executed them so at least I know the syntax to use in order to get to an external hard drive (something I hadn't known before), so thanks!!! I might try chmod 770
Update:
Now that I know the basic syntax (thanks to you) I can now change permissions for any user I like. Chronosync is able to synchronize to the drive.
Thanks!!
Nick
Message was edited by: nickditoro

The correct Ownership & Permissions on external firewire disks?

I was excited by a resolution to the same problem I have (I don't know what Ownership & Permissions I should have on my external -- bootable -- HD). Mistakenly I used Leopard to set them up rather than Mac OSX 10.4.11. Now I no longer had access to the HD nor would it show up on the desktop on Mac OSX 10.4.11 although the Disk Utitlity showed that it existed. I finally erased and cloned the disk but don't know what Permissions I should set it at. "Niel" supposedly answered this problem but his answer was "click here and follow the instructions" which does not show up on the forum. I can't find any other discussion of my specific problem nor an explanation of various permissions sets for Hard Disks internal nor external. If someone could help me I would be grateful. I am in Japan far from any Apple Stores or shops. Thank you.

For a bootable drive or system drive:
owner=system w/read-write privileges
group=admin w/read-write privileges
other=read-only privileges
The box labeled "Ignore permissions on this volume" should be unchecked.
To set the ownership and permissions select the drive and press COMMAND-I to open the Get Info window. Click on the small triangle where you see the label: Ownership and Permissions.

Permz - Quickly change file permissions in any file manager

Designed to be integrated into any file manager, permz is a bash script which presents a GUI menu. You can use it to quickly change file permissions and ownership as a normal user or as root, and delete files as root. I wrote this because I have yet to see a file manager that isn't cumbersome for this - the mechanism is usually buried on a second tab of the Properties window, and changing permissions often involves multiple clicks in a grid. To change the owner of a file, you need to type the username. And if the file is owned by root, you can't do anything.
permz --help
Presents a GUI menu for changing file permissions/ownership. May be run
as a normal user or root.
Requires: zenity gksu
Optional: sudo (recommended to prevent multiple root password prompts)
Usage: permz FILE [...]
MENU FUNCTIONS:
rwxrwxrwx Sets file(s) to given permissions
Sticky Clear/Set Performs "chmod -t" or +t to clear or set the sticky
bit. You may select to clear/set sticky in addition
to changing other permissions.
Recursive go-rxw "chmod -R go-rxw" on file(s) recursively, denying
access to non-owners
Recursive go-w "chmod -R go-w" on file(s) recursively, denying write
to non-owners
Recursive ugo+rX "chmod -R ugo+rX" giving read access to all. Also
sets +x for directories and executables.
Recursive ugo+w "chmod -R ugo+w" on file(s), giving write to all
(You may select several compatible recursive functions above at once)
Owner USER As ROOT Sets ownership to USER:USER as root
DELETE As ROOT Deletes file(s) as root. Must be used alone or with
"Perform Recursively" (to delete directories - USE
WITH CAUTION). Not available if permz is run as root.
Perform As ROOT Run as root to change selected permissions.
(Use of root is automatic when changing ownership)
Perform Recursively Adds -R to all chmod, chown, and delete commands to
descend into subdirectories. Use in conjunction with
any other functions. (Recursion is automatic for
"Recursive" functions above)
Current su command is set to: gksu -gS
If you're somewhat familiar with bash, adding additional options or changing the existing ones is straightforward.
I have tested it pretty thoroughly but if you do encounter anything amiss please let me know.
More details at http://igurublog.wordpress.com/downloads/script-permz/
And in the AUR at http://aur.archlinux.org/packages.php?ID=36978
Instructions for integrating permz into PCManFM-Mod are here.
Last edited by IgnorantGuru (2010-05-05 13:53:08)

rransom wrote:Recursive ugo+rX would be more useful than "Recursive ugo+r (dirs +x)". (The +X feature of chmod is available at least in GNU coreutils, FreeBSD, and POSIX 2003.)
Done - thanks for the tip. I also left the old code active in there with just the menu option disabled, so if anyone wants it the other way or wants both it's easy to enable. The difference is that the old way won't make any files +x, just dirs.
permz doesn't provide every possible setting of permissions, just common ones, so you may want to customize it. But I used to have these as user actions when I used Krusader and I found these were the handy ones, at least for me.

Removing ownership & permissions for all files burned to a DVD?

Hello,
I am new to the concept of "ownership & permissions". Do they apply to files burned to DVD or just the files on the computer? I would like to burn some files onto a DVD for backup and I do not want to copy the "ownership & permissions" settings of the files - I just need to backup the files only. I would like to back the files up for a year or two and I am concerned that in the future I may not remember my usernames or passwords to access these files from the burned DVD.
Do "ownership & permissions" apply to files burned onto a DVD? Or does the DVD burning process erase the "ownership & permissions" settings? I tried to burn a DVD from OSX by creating a burn folder and I didn't see any setting that allowed me to remove the "ownership & permissions" settings.
Thank you for any insite into this.

Thanks Mulder,
Here is what I am trying to do:
I do not need to backup any system files - I already have OSX on my original DVD if I needed to re-install. I only need to backup the users' document files and maybe some email folders in the users' libraries.
I set up three accounts:
1. The first account is for admin purposes only.
2. The second is for my own use - it is the account used most often on this computer.
3. The third account is for my family.
Note: I will set up a fourth account for our student renter later.
I will have access to the user names and passwords of all these accounts in case I need to go into the accounts to back up their documents. But the user(s) of the family account will not have my password - so the kids don't accidently erase any of my files.
When working in the second account (which is used most often by myself), I sometimes need to place newly created files into the "document" folder on our family account (the third account). And so I purposely changed the "Ownership & Permissions" on the "document" folder on our family account (the third account) to Group: second account. This allows me (the second account) to place files into the "Document" folder of the third account (the family account). After doing this, I also need to change the "Ownership & Permissions" of any added files to Group: third account so the user(s) of the family account can edit (read and write) the files I add from the second account.
An alternative setup that I decided not to use: I could have made use of the "users/shared" folder for this, however, I do not want everyone to be able to access these files - especially when I set up a fourth account (or even more accounts) in the future. I only would like to share the contents of the third account's "Document" folder between two users (user of the second account and the user of the third account).
Now I will continue the explanation of my setup:
Over time the "Document" folder of the third account (the family account) will become filled with a mixture of files with different Ownerships - some created from the second account and some created from the third account - but all editable from either the second account or the third account by assigning each other access via the "Group" designation in "Ownership & Permission". Because of this mix of files with different ownerships, I could, if I wanted to keep the settings consistent, select the "Document" folder of the third account (the family account) and change the ownership of all enclosed items to the user of the third account by using the "Apply to enclosed items". I would probably also change the "Group" designation to the second account too.
I will be able to make all these changes because I have the user names and passwords for all the accounts.
Now here is my main question:
My concern is that when it comes time to backup the document folders onto DVD, what if in a couple years I forget these passwords? You see, I would rather not copy any "Ownership & Permissions" settings of the files onto the DVD. Lets say that in a couple of years I go back to my DVD backup and need to pull off some old jpeg files and put them onto my computer. When I insert the old backup DVD will it say: "Sorry, you do not have access priviledges to view these files" or something like that? That would be a real problem. These are my own files. Why would I want to risk making an important backup DVD un-useable in the future because of some long-and-forgotten permission settings?
What I would like to do is copy all my files onto DVD for backup in such a way that "Ownership & Permissions" are not copied. Why put the risk of a limitation on your important backups? Is there a better way to do this? What do other people do?
Am I making this more complicated than it has to be? As you can tell, I am a beginner with OSX (and permissions) and I am looking for some advice. Thanks
Mulder, when you wrote:
"If you're trying to backup just selected files, such as your purchased music or applications, etc., then ownership and permissions shouldn't be a problem."
did you mean that ownership and permissions are not copied? That would be great. But I am not sure if that is what you meant to write. Thanks!

How can I change 'Custom' permissions for TM backup disc?

I have recently had some big problems with permissions on the main disk of my G5 iMac. After fixing permissions, Time Machine then reported that my backup disk (an external 300Gb FireWire disk) was read-only and so backups couldn't take place, and the icon for the disk has a padlock shown on it. Looking at the Get Info for the disk and unlocking 'Sharing and Permissions', I see a line saying 'You have custom access', and that all permissions shown are set to 'Custom'. I don't know what this means - and worse, I can't change the permissions to any of the normal settings (Read & Write, Read Only, Write only (drop box)), and I can't check 'Ignore ownership of this problem'.
I am thus unable to do any backup. The system worked fine for at least a year before this. Has anyone any idea what 'custom' means and what I should do. I haven't found anything that seems relevant by searching this forum.

Time Machine uses special "deny everybody everything" permissions. You should not change them.
FIrst, do a +Repair Disk+ (not permissions) on the TM volume via DIsk Utility (in your Applications/Utilities folder).
If that doesn't correct it,
If you only have a partial backup, or don't need the ones you've done, the simplest thing to do is just erase the disk/partition.
If you don't want to erase it, here's a workaround:
First, you need to find the name of the hidden file that's causing the problem Click here to download the +Time Machine Buddy+ widget.
It shows the messages from your logs for one TM backup run at a time, in a small window. If it shows a message like this: "You do not have appropriate access privileges to save file “.<nnnnnnn>” in folder <Name>"* skip to *Open the Terminal App* below.
If not, Click here to download the +Tinker Tool+ app. It allows you to change the Finder to show hidden files (among many other things). Select the first option under Finder, then click +Relaunch Finder+ at the bottom. Reverse this when done.
In a Finder window, select your Time Machine drive/partition. The very first file shown should have a name consisting of a period (dot) followed by 12 numbers and/or letters. (This is your Mac's Ethernet address). Copy or make a note of it.
Open the Terminal app (in your Applications/Utilities folder).
In Terminal, the prompt looks like this: user-xxxxxx:~ <your name>$
(where <your name> is your short user name). It's followed by a non-blinking block cursor (unless it's been changed via Terminal > Preferences).
At the prompt, type the following exactly as shown, substituting the name of your TM drive exactly, including any spaces, between the quotes; and the string of numbers & letters from the message where the series of x's are (keep the dot):
<pre> sudo chmod 644 /volumes/"TM drive name"/.xxxxxxxxxxxx</pre>
example: sudo chmod 644 /volumes/"TM Backups"/.0a1b2c3d4e5f
Press Return. You'll get some warnings and a request for your Administrator's password. Type it in (it won't be displayed) and press Return again.
Then try a +Back Up Now+ from the TM icon in your Menubar, or by control-clicking (right-clicking) the TM icon in your dock.

Mistakenly changed ownership/permissions to No Access on external Lacie.

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