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Operation Can't be Completed Because Backup Items Can't be Modified (Not a Time Machine Volume)

When attempting to move a file from an external disk to the trash, via the Finder, I receive the warning message "The operation can't be completed because backup items can't be modified." I can not move the item to the trash. I can delete the file using the rm command via Terminal. I would like to be able to delete items from this disk, using the Finder again.


I noticed this problem shortly after upgrading from OS X 10.7 to 10.7.1.


I did see the other discussions about similar problems on Time Machine disks. This external disk, which I am trying to delete from, has never been my Time Machine disk, nor has it ever been backed up via Time Machine. I do have another external disk that is used for Time Machine


There are no problems reported by the "verify disk" function in Disk Utility.


Thank you for your time.

iMac, Mac OS X (10.7)

Posted on Aug 23, 2011 8:36 PM

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Question marked as Top-ranking reply

Posted on Aug 26, 2011 7:12 AM

Correction: I subsequently foud that I could not delete ANY file through the finder (after repairing permissions with disk utility). After a mild freak-out, I calmed down and rebooted. Problem solved. Thanks!

25 replies

Jun 30, 2012 1:16 AM in response to mike693

Thanks for the relaunch Finder tip! In my case this bug seems to have been triggered because I was using diskutil to verify my Time Machine volume at the time I was trying to remove a folder from one of my non-Time Machine volumes.


Anyway, relaunching the Finder solved the problem even with the volume check still running, so all's well once more!

Dec 21, 2012 11:33 AM in response to mike693

I have the same problem. Want to delete files of "tmb" time macjine backup. Relaunch finder and reboot nothing. Same error. Can't delete. Want to free space so more room for backups in the future and renoved it from desktop so it won't bakcup anymore. But I can't delete it. I got 3tb hd for future. Just need to delete time machine some folders in the backup and can't.

Feb 2, 2013 11:09 AM in response to LaraCroft_NYC

Suggestion: I found using the normal "Force Quit" (option-command-esc) feature does not always reboot the finder properly.


Best and reliable way is to go to Activity Monitor, get the process ID (PID) for the Finder, launch the TERMINAL utility, and type KILL [FINDER-PID]. Double check the Finder's process ID. You don't want to kill something else accidentally.


I keep both the Activity Monitor and the Terminal app running all the time, because this method corrects a variey of other recurring Finder dysfunctions. If the finder is dysfunctioning, you don't want to be unable to launch either one of these utilities.

Mar 16, 2013 7:58 AM in response to mike693

Hey, have been reading this. I'm using SL operating system. I know that you can delete backups thru time machine itself. I'm sure it would be the same in Lion. ENTER TIME MACHINE. Navigate to the backup you want to delete and then click the ACTION button in that backup window. Click DELETE BACKUP. Best way because it's easy and theres no confusing the TIME MACHINE!


Chris




**EDIT** Lol, didn't understand that it WASN'T a Time Machine drive. Sorry for the posting. Just edit'd cause i cant delete the post!

May 7, 2014 5:14 PM in response to mike693

Ever day I hate my mac, iphone and ipad more and more.


Be it from iphone/pad constantly asking me to log into itunes store or requireing passwords to download apps, to safari stopping 1/2 way when loading pretty much every web page, and chrome does not, to mail's search only letting me type 1 or 2 letters before it removes the cursor from the search box and forces me to type with one finger and move my mouse over search and click to type a 2nd character.


The cracks in the apply dike are increasing on a regular basis and Steve Jobs is rolling in his grave.


I should not have to do anything when I want to delete something. When will Apple fix this? I am very tempted to move to a PC, after using Apple products all my life and despising PCs.

Oct 22, 2014 8:58 AM in response to kryptoknight

This was also driving me completely crazy, and there is no way even with the best step-by-step instructions in the world I wanted to mess with anything using Terminal.


The good news is what I found worked was simplicity itself. Put the Time Machine app in the Dock if you haven't already got it there. Now right click and choose "Browse other Time Machine disks..." and it will search all your hard drives, external and internal for old backup files. It will bring up a list of all the old backups called "Choose Time Machine Disk to Browse" and from there you pick the one you want to modify. Time Machine will then take over your desktop as usual, and miraculously will show your old backup. Now you can right click whatever files or folders you want to delete and choose "Remove all instances..." to delete them easily and safely.

Operation Can't be Completed Because Backup Items Can't be Modified (Not a Time Machine Volume)

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