- Is a co-op multiplayer game where you have to work together with your friends to build a train track across endless procedurally generated worlds. Master random encounters with its inhabitants, upgrade your train and keep it from derailing!
- The 'classic' Mac OS is the original Macintosh operating system that was introduced in 1984 alongside the first Macintosh and remained in primary use on Macs until the introduction of Mac OS X in 2001. Apple released the original Macintosh on January 24, 1984; its early system software was partially based on the Lisa OS and the Xerox PARC Alto computer, which former Apple CEO Steve Jobs.
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To erase a Macintosh hard disk you can boot with a different disk and use the Disk Utility.
For OS X 10.2-10.7:
Note:This refers to a full Mac OS X 10.2.3 or later CD included with a computer, not to the update-only 10.2.3 CD. Steps for zeroing data:
These steps assume you have a Mac OS X 10.2.3 or later CD:
- Insert the Mac OS X CD.
- Restart the computer.
- Immediately after the startup sound, press and hold the “C” key to start up from CD.
- When the Installer screen appears, do not click Continue. Instead, choose Installer > Open Disk Utilities.
- Select the hard drive to erase.
- Click the Erase tab.
- Select the volume format from the Volume Format pop-up menu.
- Click Options.
- Select the checkbox for “Zero all data”.
- Click OK.
- Click Erase.
For a more secure method of erasing of data, you can select the checkbox “8 Way Random Write Format” instead of or in addition to selecting “Zero all data.” This process could take several hours.
For OS 10.8 and newer:
Secure Erase is documented in the Help menu of the Disk Utility application. Disk Utility has shipped on all OS X versions in /Applications/Utilities folder.
To erase your computer’s startup disk, you must start up from another disk, such as an OS X installation disc or from the Recovery Disk. All new OS devices come with a built-in Recovery Disk which can be used by restarting and holding down the R key. A Recovery Disk can also be created on an external hard disk or thumb drive using the Recovery Disk Assistant:
Securely erase a disk in OS X 10.8 or newer
Derailed Mac Os Catalina
The following is a summary of the Disk Utility help available from the Help menu when running the Disk Utility application:
You can securely erase a disk or partition to make sure the confidential information it contains cannot be recovered.
When erasing a disk or partition, Disk Utility does not erase the actual files; it erases only the information used to access the files. Many commonly available disk recovery apps can easily recover the files. When securely erasing a disk or partition, Disk Utility writes over the erased files, so they can never be recovered. You can choose how many times to write over the files. Writing over the files several times is more secure than writing over them once, but it takes longer.
Derailed Mac Os X
Securely erasing a disk erases files on all its partitions. Securely erasing a partition erases all the files on that partition but does not affect other partitions.
You can’t securely erase a CD, DVD, or a solid-state drive. If you don’t want data recovered from a solid-state drive, use full disk encryption.
To erase your computer’s startup disk, you must start up from another disk, such as an OS X installation disc or from the Recovery Disk .
- Open Disk Utility application from the Utility Folder in the Applications folder or select it from the list when booting from the Recovery Disk.
- Select the disk or partition to erase, and then click Erase.
- Specify a format, and enter a name for the disk.
- Click Security Options, use the slider to choose how many times to write over the data on the disk, and click OK. Writing over the data three times meets the U.S. Department of Energy standard for securely erasing magnetic media. Writing over the data seven times meets the U.S. Department of Defense 5220-22-M standard. Single pass or “Zeroing out” the date is adequate for most
- Click Erase.
Also for those wanting to “Clean” individual files, note this section from the technote:
Mac OS X 10.3+ feature – Secure Empty Trash
Mac Os Mojave
You can securely empty the Trash in Mac OS X Panther. While in the Finder, from the File menu choose Secure Empty Trash.
Derailed Mac Os 7
Note: When you securely empty the Trash, the deleted data cannot be recovered by disk utilities. You should only do this if you have a backup or you are sure you will never need the data again.
Derailed Mac Os X
For machines which boot only MacOS 9 or less use either Drive Setup, Apple HD SC Setup, or Internal HD Format and select the option to zero out and/or low level format the disk. These programs are usually in the Utilities Folder on the install CDs for the various versions of the MacOS.