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thanks for watching Techquickie click the subscribe button then enable

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notifications with the Bell icon so you won't miss any future videos if you're

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one of our younger viewers you may not remember a time before a hundred and

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twenty Gigabyte hard drives were the bare minimum but others of you may

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actually recall the days where two gigs

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was an extravagant luxury these days

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though it isn't uncommon to see multi terabyte drives in even mid-range

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computers due to the exploding file sizes from ever more elaborate PC games

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and 4k movies I mean a single to our 4k

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film on blu-ray can take up around 45

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gigabytes of space which got us thinking

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exactly how big could one single file

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get is there a hard limit is it bound

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only by the capacity of your storage medium I mean could you theoretically

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sit there and watch every movie TV show

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and cat video ever made packed into one

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mp4 file provided you had a hard drive

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and bucket of popcorn large enough well

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as it turns out the answer is complicated

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there is actually a crucial limiting factor to

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file sizes your storage devices file

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system and you can learn more about that up here but simply put a file system is

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the scheme that your hard drive SSD or memory card uses to organize and keep

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track of your files and one thing that

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most modern file systems do is keep records of how large each file is both

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so that the user can manage his or her disk space and so the computer can keep

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track of how much space is being used in different physical parts of the drive

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these size values are stored as either a

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32-bit or a 64-bit value so older

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operating systems like Windows 98 often used 30 two-bit file systems fat32 was

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the most common on home pcs in the late 90s and actually still persists in some

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applications today but unfortunately

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the highest value you can express in 32

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bits is a little over 4.2 billion meaning that the file size limit on many

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desktop computers used to be four point two gigabytes which is less than a full

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single layer DVD so that clearly

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wouldn't cut it these days but ever

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since Windows XP Microsoft has switched over its home operating systems to the

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NTFS file system which supports 64-bit

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file sizes something that would have caused slowdowns due to file system

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overhead on older pcs so nowadays the

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theoretical limit for a single NTFS file

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is over 18 exabytes enough to hold

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400 million of those 4k movies that I

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mentioned earlier though good luck finding a drive that large and anyway as

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with many other theoretical maximums the

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real-life limit is actually smaller modern operating systems impose

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additional limits on file sizes with Windows 10 cutting you off at 17 and a

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half terabytes I mean that is still

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larger than any hard drive on the market at the time we shot this episode but

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years from now we may have to rethink

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file systems yet again if they figure out a way for us to dump our

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consciousness onto a 100x of a DNA

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storage thing speaking of storage tunnel bear is the

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below so thanks for watching guys like a

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