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Unzipping 30GB file fills the hard drive.

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  • Cache
  • Mac OS X
  • Hard Drives
  • Free Space
Last response: in Mac Os X
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September 5, 2013 9:58:42 AM

Hi there!

I'm trying to unzip a very large file, but it slowly fills the hard drive with cache files or something like that and fails when the HDD capacity reaches zero. I have 411GB of free space so I didn't really think it would be a problem. Is there any way to circumvent this problem or do I have to get more HDD space?

More about : unzipping 30gb file fills hard drive

September 5, 2013 10:01:51 AM

What file type is it? Some files can compress quite a lot, and with a 30GB zip, it is quite believable that the unzipped result would be over 400GB.
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September 5, 2013 10:09:42 AM

USAFRet said:
What file type is it? Some files can compress quite a lot, and with a 30GB zip, it is quite believable that the unzipped result would be over 400GB.


Yeah, I probably should have mentioned that. It's a .bz2 file and it's a detailed GIS map of the entire planet so I'm guessing it's quite big. But I had no idea that files could be compressed that much. That would certainly leave me in a bit of a pickle if that's really the case.

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September 5, 2013 10:22:26 AM

amagnu said:
USAFRet said:
What file type is it? Some files can compress quite a lot, and with a 30GB zip, it is quite believable that the unzipped result would be over 400GB.


Yeah, I probably should have mentioned that. It's a .bz2 file and it's a detailed GIS map of the entire planet so I'm guessing it's quite big. But I had no idea that files could be compressed that much. That would certainly leave me in a bit of a pickle if that's really the case.



A .bz2 is another type of file compression. Depending on the actual file contents...you may well be in a pickle.
Here are some comments on finding out how large the uncompressed result might be:
http://superuser.com/questions/53984/is-there-a-way-to-...

"I picked the smallest file for the first test, of course. 140 MB compressed --> 3 GB uncompressed. "

At that same compression ratio, your 30GB file would come out at around 650GB.
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