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Important information

Here is some essential information that you must know before using OnyX.

Software License Agreement:

Read this software license agreement before using the software. By using the software, you are agreeing to be bound by the terms of this license.

OnyX is a free and gratis software (freeware). You may copy and distribute it at will. You can use it for as long as you want.

You expressly acknowledge and agree that use of the OnyX software is at your sole risk and that the entire risk as to satisfactory quality, performance, accuracy, and effort is with you.

The OnyX software is provided "as is," with all faults and without warranty of any kind.

In no event shall I be liable for personal injury, or any incidental, special, indirect or consequential damages whatsoever, including, without limitation, damages for loss of profits, loss of data, business interruption or any other commercial damages or losses, arising out of or related to your use or inability to use the OnyX software, however caused.

Back up your data:

Before using OnyX, back up your data.

OnyX is not problem-free, and no user is infallible. Back up your data using Time Machine or any third–party backup utility.

Verifying startup disk:

Before running Maintenance or Cleaning tasks, you should check the SMART status of the startup disk and its system files.

These verifications are essential and can be made when OnyX is opened or from the Verifying pane. Errors in the structure of the system files are not uncommon and can have disastrous consequences if they're not repaired.

Computer does not respond:

OnyX cannot destroy the system.

If your computer does not respond during the verification of the volume, you need not worry. This is an expected and normal behavior. After OnyX has finished checking, control will be returned to you.

Personal data removed:

OnyX doesn't remove your personal data…

...but you must observe certain basic rules regarding the file system. OS X is a UNIX–based operating system and has a well–defined structure. Your data must be stored in your home folder, in the existing folders (for example, "Documents", "Pictures", "Music", and so on, or in additional folders that you have previously created in your home folder). You should never store your documents or applications in folders that are subordinated to the operating system (for example, folders named "Library", "System", or in any of the subfolders of these folders).

Anybody can make a mistake, or handle data incorrectly...

Back up your data regularly.

Problem with a hidden function:

OnyX will not always be able to correct a function that has an undesirable behavior.

The functions in the Parameters pane were created by the developers of the system or of the application concerned. OnyX merely turns those functions on or off, using a simple command, at your discretion. If one of those functions causes a problem, turn it off. Do not forget: If a function is hidden, there must be a good reason...

Updates:

Always update OnyX and your system.

The last versions generally correct at least some of the issues encountered in previous versions.

Uninstall OnyX:

To uninstall OnyX, go in the OnyX menu and choose Uninstall OnyX. In the confirmation message that appears, click the Continue button. The application and the components created while installing and using OnyX will be removed.

To cancel this warning from appearing when opening OnyX, go to Preferences > "Messages and Log", and deselect the "Display Important Info" option.