Downloading works best using the Safari web browser.
Note 1: All downloadable files are encoded in BinHex. Microsoft Internet Explorer will decode a file but leave the .hqx (BinHex) extension. This can cause various error messages to appear depending upon the version of OS X you are running. You should use Safari or another web browser to avoid any errors. You can also change the extension of the downloaded file from .hqx to .dmg and then double-click the file to open it.
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Note: These four items are optional, and you do not need to fill them out in order to download the software.
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Click here to learn about DiskWarrior 5.1 and macOS 10.13 High Sierra & APFS