It varies, all the dirty pages in the page cache that aren't on disk won't be seen by fsck and will be taken down as errors. The only way you want to run fsck on a mounted partition is if it's mounted ...
Apple's macOS, through UNIX, provides a variety of tools to keep your drives healthy, with one of them being the fsck Terminal command. Here's how to use it. fsck, or "file system consistency check," ...
A recent discussion in Macworld’s Mac 911 forum revolves around whether fsck (filesystem consistency check) runs when the Mac first boots. Though the subject may be more appropriate for a bar bet, ...
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