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I'm after a list of the largest files on a windows box, i.e. Not just in one folder, but anywhere on the disk. Is there any easy way of getting this?

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up vote 2 down vote accepted

Do a windows search on you windows drive with "*" joker that mean all file, and specify a minimum size let's say of 40mb, than you'll have every file on you system drive that are larger than 40mb.

Hope this help.

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Check out this app: WinDirStat

This will show you graphically as well as a hierarchy/tree map. This software is free and open source (GPL) and works really well.

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+10! windirstat is awesome – hasen May 13 '09 at 13:18
I have always used Sequoia View, but just installed WinDirStat to take a look at it. Very nice. I think Sequoia View lays out the Tree Map a little better and is more responsive. I do like WinDirStat's ability to select a file type and see it highlighted across the entire drive. – Keith Sirmons May 13 '09 at 14:50
@Keith Sirmons - Do you know if Sequoia is a branch of WinDirStat? They look very similar and since WinDirStat is open source this is very possible. – Andy May May 13 '09 at 15:21
Sequoia View's V1.1 original publish date is 11/9/2000. It was about 5 years ahead of WinDirStat's V1.1.2 release on 7/16/2005. – Keith Sirmons May 13 '09 at 15:40

Install PowerShell. Then run this:

dir c:\ -recurse -erroraction silentlycontinue | sort length -descending | select -first 20

That'll give you back the 20 largest files on C:.

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If you are doing this regularly, you might look at tools like TreeSize Pro or SizeExplorer (although the latter seems to nob be as recent)

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Nice software, thanks for sharing ;) – Marc-Andre R. May 13 '09 at 13:07
@Marc-AndreR., Do you mean TreeSize or do you mean SizeExplorer? – Pacerier Mar 17 '15 at 19:59
@Pacerier : TreeSize is definitely more recent and maintain than SizeExplorer or WinDirStat. That said, both does the job but I do have a preference for TreeSize. Hope this help. – Marc-Andre R. Mar 18 '15 at 10:52

Install Sequoia View

It will visually show you your large files and large directories. It makes finding where all your space disappeared very easy.

Free and < 1 Mb in size.

enter image description here

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PowerShell (extending answer 7768) across multiple drives:

"c","e","f" | dir -path {$_} | sort -desc Length | select -first 20 | ft FullName
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My favorite is Disk Scanner by Steffen Gerlach:

Standalone freeware, 157K. Takes a little time to build the report, but the circular graphic is very intuitive and informative.

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Yes and it is free: Folder Size
There is a small tutorial here: How to List Largest Files & Largest Folders

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