This should create a bootable CD. The above process may yield clues as to how to make a bootable CD in Mac OS X 10.3, though since Apple moved Disk Copy's functions to the Disk Utility application in creating Mac OS X 10.3, the location of the various functions in the above steps have moved to other menus. Panther/Tiger/Leopard method. That hidden technical side of the Mac booting process is what an excellent visual diagram from Howard Oakey at EclecticLight helps to demonstrate. If you’re curious about the technical aspects of the Mac boot sequence, and the variables involved, check out the graphic below from EclecticLight to learn a bit about the underpinnings of the startup process.
Developer(s) | Apple |
---|---|
Initial release | January 5, 1999 |
Operating system | macOS Mac OS 9 Mac OS 8 |
License | proprietary |
Website | apple.com |
NetBoot was a technology from Apple which enabled Macs with capable firmware (i.e. New World ROM) to boot from a network, rather than a local hard disk or optical disc drive. NetBoot is a derived work from the Bootstrap Protocol (BOOTP), and is similar in concept to the Preboot Execution Environment. The technology was announced as a part of the original version of Mac OS X Server at Macworld Expo on 5 January 1999.[1] NetBoot has continued to be a core systems management technology for Apple,[2] and has been adapted to support modern Mac Intel machines. NetBoot, USB, and FireWire are some of the external volume options for Mac OS re-install.
Process[edit]
A disk image with a copy of macOS, macOS Server, Mac OS 9, or Mac OS 8 is created using System Image Utility and is stored on a server, typically macOS Server. Clients receive this image across a network using many popular protocols including: HTTPS, AFP, TFTP, NFS, and multicastApple Software Restore (ASR). Server-side NetBoot image can boot entire machines, although NetBoot is more commonly used for operating system and software deployment, somewhat similar to Norton Ghost.
To NetBoot a client machine, hold the 'N' key as the Mac boots, or select the NetBoot server using the Startup Disk preference pane (macOS) or control panel (Mac OS 8 and 9). Alternatively, New World Macs can be started with the Command (⌘), Option (⌥), O and F keys pressed to enter the Open Firmware prompt. Once in the Open Firmware one can tell the client to attempt the NetBoot procedure by entering '
boot enet:0
' and pressing the return key.Client machines first request network configuration information through DHCP, then a list of boot images and servers with BSDP and then proceed to download images with protocols mentioned above.
Both Intel and PowerPC-based servers can serve images for Intel and PowerPC-based clients.
NetInstall[edit]
NetInstall is a similar feature of macOS Server which utilizes NetBoot and ASR to deliver installation images to network clients (typically on first boot). Like NetBoot, NetInstall images can be created using the System Image Utility. NetInstall performs a function for macOS similar to Windows Deployment Services for Microsoft clients, which depend on the Preboot Execution Environment.
![What What](/uploads/1/1/4/2/114242667/740296612.png)
Legacy[edit]
Mac OS 8.5 and Mac OS 9 use only BOOTP/DHCP to get IP information, followed by a TFTP transfer of the Mac OS ROM file. Next, two volumes are mounted via AppleTalk over TCP on which the client disk images reside. All in all, the Classic Mac OS uses three images; a System image which contains the operating system and may contain applications. Next a private image (or scratch disk) is mounted in an overlay over the read-only System image. Finally, an applications image is mounted. This image, however, may be empty.
See also[edit]
References[edit]
- ^'Apple Announces Mac OS X Server'. Apple, Inc. 1999-01-05. Retrieved 2010-08-12.
NetBoot, a new feature which allows a network of Macs to be booted and configured from a single server
- ^Ryan Faas (2007-09-11). 'Hands on: Configuring Apple's NetBoot service'. Computerworld. Retrieved 2010-08-12.
Apple's NetBoot technology has been a staple part of Mac OS X Server since the latter's original release.
External links[edit]
Retrieved from 'https://en.wikipedia.org/w/index.php?title=NetBoot&oldid=972117063'
To boot or boot up a computer means to start it up, during which process, the operating system is loaded into memory. This is generally done by pressing a button on the computer itself, at which point the computer boots from its internal hard drive. The term boot disk, also bootable disk, is usually used to refer not to the built-in drive from which the computer normally boots but to a removable storage medium on which the operating system is stored and from which the computer can be started, if necessary. Since computers may be designed to boot up from their own hard drive, they can require a particular instruction given from the keyboard in order to start up from a boot disk.
A boot disk could be any of several different types of media, including a CD-ROM, a DVD-ROM, a flash drive, an external Firewire hard drive, or a floppy disk. In order for the boot disk to work, it must hold an operating system that is appropriate to the computer. You cannot, for example, boot a Windows computer with a boot disk holding a Macintosh operating system.
Many computers come with a boot disk. One type is LiveCD or LiveDVD. This refers to a version of the operating system that runs without needing to be installed. Additionally, there are specialized boot disks for sale.
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A boot disk may have several functions, depending what is installed on it, if anything, besides the operating system. A bootable disk can be used when the computer cannot boot from its internal hard drive, or when that internal hard drive needs repair. In this case, booting from an external source allows the user to run a disk repair utility, which may be able to fix the internal hard drive and allow it to reboot. A bootable disk may also be employed in any attempts made at data recovery. Data recovery can be necessary if a computer’s hard disk fails, the computer is damaged, or for other reasons.
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A bootable disk is also the mechanism for making changes to the operating system. A boot disk may be used to perform the initial installation of an operating system on a computer. It may also be used to reinstall the operating system, which might be necessary if, for example, one needed to securely erase the data on the system before selling it or in ridding the computer of a virus. It can also be used to replace an operating system, that is, upgrade it to a newer version or downgrade it to a previous version.