I am not able to delete or write my files to my external hard disk drive what shall i do?

i am teja i brought a new mac book air here i am not able to write or delete the files that are present in a external hard disk drive what shall i do now to enable required permisions................plz reply me i am new to mac

I guess your external drive is Windows (NTFS) formattet.
By default you were only able to read from that drive, as Mac doesent support NTFS write.
If you want to have read/write access to a NTFS volume you have to use add-in tools like MacFuse or Paragon on your Mac.
Not having write or delete permissions on the external drive may also preventyou from changing existing files on that drive.
Right click on the drive in Finder and choose "Information" from the menu will give you more information about the reasons of your problem.
Lupunus

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I deleted my back up files from my external hard drive ...
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Hi
I have a Windows 7 PC desktop with an external hard disk coonected to it by USB formatted as NTFS. Is is connected by cable to a wireless router.
I now also have a Macbook Pro.
I would like to work on jpg and Raw files on the External Hard Disk both via the desktop (as I currently do) and also now via the Macbook using Photoshop Elements which exists on both.
Is there a way that the Macbook can read the external drive and read and write the same files as the pc without purchasing a Macdrive and reformatting the External Drive?
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Hi everyone
I've managed to work out how to share my desktop and the external drive attached to it via wireless so my Macbook Pro can see, open, and edit and save photo files via Photoshop Elements.
I can also then view and edit them through the Windows PC - though they say some properties are missing this I can live with.
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Disk write cache corruption on an external hard disk

Recently I purchased an external hard disk, to put all of my pictures of my baby due to space limitations on my internal laptop drive. Since my Canon camera 10 megapixel pictures take up a ton of space this was occurring at an alarming rate. My intention was also to back up to DVD but never got to it. This is both a comment and a question.
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This apparently corrupted the drive's directory. Upon reboot the drive would not mount. Since there were time machine backups on the drive too Diskwarrior was not able to reconstruct the drive in the built in memory available on the computer. Time machine stores millions of files and Diskwarrior apparently wants to keep it all in memory at once. Since my computer has 2GB you would hope that would be enough but apparently not. So that failed. Other utilities seemed to be able to find the files but not restore the directory. I also took it to the apple store they were not able to recover it.
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Disabling a write cache would not help you with the problem you are having. Besides the write cache is on the hard drive and operates independently of the operating system. But nothing can protect you from disconnected an external drive improperly, and if the drive is in the process of being written to, and the problem comes from directory corruption, not file corruption, as in the case you have described, disabling a write cache would not have made any difference.
For the future the magic word is: Backups.
< Edited by Host >

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Hello, yea.. thanks man =)
Basically, its a shared hard disk between my macbook and a windows PC. So i kinda use the PC to write all my backups and data on the hard disk.
I have quite a few hard disk and they all have the same issue. It says 'The item 'file x'cannot be moved because 'my hard disk' cannot be modified.'I've used the software provided from the hard disk manufacturer, Maxtor/Seagate, to reformat the brand new portable hard disk which i bought yesterday.
Its connected via USB, same as all the other ones i have.
eh. the get info for it says
Kind: Volume
Created: --
Modified: Thursday, 23 Aprl 2009 3:24AM
Format: Windows NT Filesystem
Capacity: 232.88 GB
Available: 232.57 GB
Ownerships & Permissions: You can only read.
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I am not able to delete or write my files to my external hard disk drive what shall i do?

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