As of Mac OS 8, Appledistributes its system software on CD-ROM only. Earlier versions wereavailable on both CD-ROM and floppy disks. The instructions belowcover installation using either type of media. If you have an olderMac OS computer, see ARCHIVED: For my older Macintosh computer, where can I get system software? If you are installing MacOS X, see ARCHIVED: How do I install or upgrade Mac OS X 10.6 (Snow Leopard)?
To install Mac OS:
- Boot up with the CD-ROM or, if you have the system on floppydisks, the System Tools disk.
For instructions on how to boot from a CD-ROM, see ARCHIVED: On a Mac, how do I change my startup volume or boot from analternative volume, disc, or device?
To boot from a floppy disk, shut down the computer and insert theSystem Tools disk or the first installation disk. When you restart thecomputer, it should boot from the floppy.
Note: If you have downloaded a Net Install of System7.5.3 for an older computer from Apple, you should also download theNetwork Access disk image, so-called because it contains aSystem Folder and the minimum software needed to make anetwork connection. You will need Disk Copy to convert thedisk image into a boot-up floppy. Apple recommends you boot from sucha floppy before running a Net Install of System 7.5.3.
- Run Disk First Aid on the volume on which you will beinstalling the Mac OS. In older versions of the system software, DiskFirst Aid is on the Disk Tools or System Tools disk, while in newerversions it is in a folder named
Utilities
on the CD-ROM.Newer Mac OS installers automatically check the disk as part of theinstallation process. - Double-click the installer program. In the Mac OS 7.6 through 9installers, you will need to click Continue on the firstscreen and then select the drive you want to install to on the secondscreen. For earlier installers, click OK in thedialog box telling you what you are about to do. If installing from aCD-ROM, make sure you select the volume on which you want the systemto be installed.
- There are various types of installation from which to choose.Choose the method that best suits your situation. If you already haveMac OS 7.6 through 9 installed, the installers for these systems willdetect that and give you the options Reinstall andAdd/Remove. Other options are as follows:
- Easy Install will install the default system (the systemfor that particular computer) and all printer software.
- Custom Install allows you to specify a systemconfiguration other than the default. You can choose to install aversion configured for the particular Macintosh model you have or onethat will work with any model. You can also choose a minimal systemconfiguration that does not install some optional components of thesystem, or you can separately specify what networking software,multimedia support software, specific printers drivers, etc., toinstall.
- Custom Remove allows you to remove selected systemcomponents from the system. Make sure the applications you are usingdon't require these components before removing them.
- Clean Install creates a brand new
SystemFolder
. The oldSystem Folder
is renamedPrevious System Folder
. For instructions on performingthis type of installation, consult ARCHIVED: In Mac OS 9.x and earlier, what is a clean system install, and how canI do it?
- Once the installer has finished updating or installing youroperating system, restart your computer. You should then install anyupdates to the operating system; see ARCHIVED: For Mac OS X, how do I obtain and install system softwareupdates?
Download Disk Aid: System Cleaner for macOS 10.7 or later and enjoy it on your Mac. Disk Aid is a professional grade system utility app for keeping your Mac running at its very best. It is lovingly developed by the leaders in utility software, FIPLAB, who have created award-winning and extremely popular apps used by millions of Mac users. Download Disk Aid: System Cleaner for macOS 10.7 or later and enjoy it on your Mac. Disk Aid is a professional grade system utility app for keeping your Mac running at its very best. It is lovingly developed by the leaders in utility software, FIPLAB, who have created award-winning and extremely popular apps used by millions of Mac users.
Editor’s Note:Shortly after MacCentral posted this article, the file was apparently pulled from circulation on Apple’s download site. In the interim, readers have successfully downloaded and installed the new version of Disk First Aid by using the Software Update control panel.
Apple has posted its hard disk repair utility Disk First Aid 8.6.1 to its Download Web site. The new version is for Mac OS 9.0.4 and later.
Apple notes the following changes in Disk First Aid 8.6.1:
Mac Os Boot Disk Download
Disk First Aid Mac Os X Download
The software itself is available as an .SMI file, or a self-mounting disk image. The download clocks in at about 685K. More details are available from Apple’s Download site.
Disk First Aid Mac Download
Disk First Aid is distributed for free from Apple. The software is provided as part of Apple’s basic installation suite for Mac OS 9.1 and lower. Disk First Aid 8.6.1 is intended for PowerPC-based Macs running the U.S. English version of Mac OS 9.0.4 or later, according to documentation included with the software.