![]() For secondary hard links, there is a dark circle inside the bullet. For primary hard links, there is a white rectangle inside the item’s bullet. To help you recognize hard links, DaisyDisk displays visual hints in the sidebar list. It may sometimes create confusion, because it looks like no free space appears after you delete a file. Note that the linked disk space is not released until there is at least one hard link pointing to it. The first occurrence of a hard link (the primary link) is counted, and the rest of parallel hard links ( secondary links) are assigned a virtual size of 0 bytes, so that they do not contribute to the overall folder size. Some apps (including Finder) do not take this fact into account and count parallel hard links twice or more times as distinct files, which produces wrong folder sizes.ĭaisyDisk detects hard links and counts them correctly, i.e. Unlike soft links, for hard links, it’s impossible to tell which of them is the “original” file and which is a “reference”, because all hard links to the same area on disk are indistinguishable from each other. DaisyDisk counts soft links simply as small files and they do not create any problems when calculating folder sizes. Most modern file systems support two kinds of links: soft links and hard links.Ī soft link is basically a small file that contains only a reference to the original file. Links are extensively used by the operating system, by Time Machine and by many Apple apps (like iTunes, Photos etc.) and also by some third-party apps. This can save you a lot of disk space, because otherwise you’d need to copy the file’s data. But, sometimes it’s necessary to reference the same area on disk with more than one name (or link). ![]() Each file on your disk connects a name to a certain area on disk, with a one-to-one relation.
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