Deleting Time Machine Back-up Files - HELP!

I tried to delete a time machine back-up file from my external drive (to clear space), I dragged it into the trash ... when I tried to empty trash it looked like there were 1000s of files being deleted. That scared me so I stopped the trash from emptying. Now I can't get the file out of the trash. I try to drag it out and it just copies. So two questions: 1) how do I get this file out of the trash? 2) how do I delete all of these back-up files - well, I don't need to delete all of them but there are so many? Do I really need all of these time machine back-ups? If I do delete them - what am I actually deleting? Are they just copies of my harddrive or is it a problem to delete them (when I look in the file that is in my trash it seems like it is my whole system ...). Sorry for all of the questions but I am in a bit of a panic. Also, I did try to delete the files by going into time machine, clicking on the gear icon, selecting a file and clicking on delete, nothing happened. Any thoughts, suggestions, advice most welcome!

wcaroliner wrote:
So two questions: 1) how do I get this file out of the trash?
See #E6 in [Time Machine - Troubleshooting|http://web.me.com/pondini/Time_Machine/Troubleshooting.html] (or use the link in *User Tips* at the top of this forum).
2) how do I delete all of these back-up files - well, I don't need to delete all of them but there are so many? Do I really need all of these time machine back-ups? If I do delete them - what am I actually deleting? Are they just copies of my harddrive or is it a problem to delete them (when I look in the file that is in my trash it seems like it is my whole system
You shouldn't have to delete old backups. Time Machine will do that automatically when it needs space for new ones, unless you have the +Warn when old backups are deleted+ box checked in +Time Machine Preferences > Options.+ Just remove the check.
If you have other data on your Time Machine drive, in the same partition, that's not a good idea. It needs to be moved elsewhere, so Time Machine has it's own, exclusive space. See #3 in [Time Machine - Frequently Asked Questions|http://web.me.com/pondini/Time_Machine/FAQ.html] (or use the link in *User Tips* at the top of this forum).
The backups have a complex and somewhat unusual structure; there's a bit of "smoke and mirrors" going on there, where it appears that every backup is a full copy of your system, and it is, in a way, but isn't in another. Seems contradictory, I know. See [How Time Machine works its Magic|http://web.me.com/pondini/Time_Machine/Works.html] for an explanation.
I did try to delete the files by going into time machine, clicking on the gear icon, selecting a file and clicking on delete, nothing happened.
You should have gotten a confirmation prompt, then one for your Admin password. If you didn't, the backups may be damaged/corrupted. Repair them, per #A5 in Troubleshooting.

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