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Disk First Aid is a free software utility made by Apple Inc. that is bundled with all computers running Mac OS either as a standalone application (in the case of Mac OS 9 and below) or as part of the Disk Utility (in the case of OS X).〔 This tool verifies and repairs a limited number of directory structure problems on any HFS or HFS Plus hard disk or volume. Disk First Aid is a very simple tool, with it only being able to detect and repair directory damage and many books are critical of its sometimes inaccurate reporting of errors, and often suggest to run the tool more than once to ensure you are receiving a consistent result.〔 Disk First Aid is located in Applications:Utilities:Disk First Aid prior to OS X and at /Applications/Utilities/Disk Utility.app (as part of Disk Utility) in OS X.〔 In Mac OS 9 and below, the system provides an option to run Disk First Aid on startup, although it has been reported that it provides little gain and sometimes can amplify a problem.〔== Situations to use the tool == One source suggests that disk utility should be used when there are: * Frequent system crashes * Disappearing files * Files changing size * Problems copying files from one place to another. * Problems saving files. * Cryptic error messages.〔 as well is for general maintenance every 6 months. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Disk First Aid」の詳細全文を読む スポンサード リンク
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