Protecting an external hard disk from copying

I have an external hard disk with 120+GB of teaching resources in what may soon become a semi-open access environment. I would like to set up the drive so that a user can view files on it but not copy them onto a CDR or another external drive. Is this possible? I tried setting "permissions", but I could get the effect I was after.
G4 PowerMac Mac OS X (10.4.8)

It isn't possible. If a user has permission to read files on the volume, the user then has permission to copy and save them to another location.
I'd be more worried about your files getting trashed. External drives are very insecure. Even if you try to enforce permissions on them, as soon as the drive is plugged into a Mac, the user will have full read+write access to all its contents by default. That's the nature of external drives.
So I'd start a comprehensive backup regimen to protect the data on the drive, or try a network storage solution on which permissions can really be enforced.

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brand: Seagate
4TB
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Click on it, choose Get Info from the File menu, and check the format.
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If it's formatted as FAT32 or exFAT, use the Disk Utility's Repair Disk command on it; this may also happen for a flash drive which is about to fail.
If it's formatted as Mac OS Extended, click Authenticate and provide your administrator password, or change the permissions on that specific folder in its Get Info window.
(110769)

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Copying or moving video from your Event Library to an external hard disk
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I'm facing a bit of a problem.
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Hi Simon. How is it formatted, FAT or NTFS?
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how to copy a folder more then 4GB from from my iMac to a pendrive or external hard disk?
i have an iMac 27inch with os x 10.8.

You'll have to reformat the drive.
Assuming you want to use it with both Mac and Windows, reformat it on the Windows machine as exFAT (this is FAT64 as opposed to the standard formatting for those drives as FAT32)
exFAT has no file size limitations (for all practical purposes).
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If it's being used only with Mac, reformat as GUID partition map and Mac OS Extended.

I cant able to copy my files from my macbook to external hard disk,its showing "read-only",but i can able to transfer files in windows os,why cant i able to do tht in here?

i cant able to copy my files from my macbook to external hard disk,its showing "read-only",but i can able to transfer files in windows os,why cant i able to do tht in here?

to frederic1943
Its in NTFS Format...and i hav downloaded the file NTFS-3G,but still i dont know wht to do with that.will u pls help me here.

Cannot copy files from external hard disks

This is happening often enough to be really painful:
I insert a hard disk. I browse the files on it. I open a new window of Finder and drag some files from the external hard disk into my own machine (OSX Leopard 10.5.5). It croaks, telling me some "permissions" are wrong (Error -36).
Browsing Google and Macosxhints and all of that, the suggestions indicate that I should "repair permissions", "repair disk", and reboot. All done. Still doesnt work.
What now? I never had this problem with Windows. What's with this permissions drivel on OSX and how can I fix it once and for all? I only use my machine to browse on Firefox/Safari, talk with Skype, edit with Coda/Transmit, and then Office documents. Which of these tools changes these mysterious permissions so that I have to keep "repairing" again and again???
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I am on shaky ground here because I am totally ignorant about about Windoze and MS-DOS. What I can tell you, though, is that the Unix underpinning of Mac OS X is heavily reliant on the concept of "ownership" which, apart from other factors, has security implications. FAT32 has absolutely no concept of file ownership. (That's why Microsoft encourages everyone to use NTFS instead - mainly for the security implications).
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Wait patiently for someone who knows how to advise you to respond in this thread, or post again with a possibly more descriptive/pertinent title.
Sorry not to have been of any help.
Andreas

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I am trying to save memory on my iPhone 4S/ ios6.
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1. What format is the external drive? It sounds like it's ina format that Macs can't write to. Is it a NAS or NTFS?
2. Easiest thing: just move your iPhoto Library to the external
Make sure the drive is formatted Mac OS Extended (Journaled)
1. Quit iPhoto
2. Copy the iPhoto Library from your Pictures Folder to the External Disk.
3. Hold down the option (or alt) key while launching iPhoto. From the resulting menu select 'Choose Library' and navigate to the new location. From that point on this will be the default location of your library.
4. Test the library and when you're sure all is well, trash the one on your internal HD to free up space.
Regards
TD

Protecting an external hard disk from copying

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