| Also known as | M0001W |
|---|---|
| Manufacturer | Apple Computer, Inc. |
| Product family | Compact Macintosh |
| Release date | September 10, 1984; 36 years ago |
| Introductory price | US$2,795 (equivalent to $6,878 in 2019) |
| Discontinued | April 14, 1986 |
| Operating system | 1.0, 1.1, 2.0, 2.1, 3.0, 3.2,[1]3.3, 3.4, 4.0, 4.1 |
| CPU | Motorola 68000 @ 7.8338 MHz(Effectively 6 MHz) |
| Memory | 512 kB RAM (built-in) |
| Predecessor | Macintosh 128K |
| Successor | Macintosh 512Ke Macintosh Plus |
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The Macintosh 512K is a personal computer that was designed, manufactured and sold by Apple Computer, inc. from September 1984 to April 1986. It is the first update to the original Macintosh 128K. It was virtually identical to the previous Macintosh, differing primarily in the amount of built-in random-access memory. The increased memory turned the Macintosh into a more business-capable computer and gained the ability to run more software. Ac3d keygen free.
The Mac 512K originally shipped with Macintosh System 1.1 but was able to run all versions of Mac OS up to System 4.1. It was replaced by the Macintosh 512Ke and the Macintosh Plus. All support for the Mac 512K was discontinued on September 1, 1998.
Features[edit]
Processor and memory[edit]
Like the Macintosh 128K before it, the 512K contained a Motorola 68000 connected to a 512 kBDRAM by a 16-bitdata bus. Though the memory had been quadrupled, it could not be upgraded. The large increase earned it the nickname Fat Mac. A 64 kB ROM chip boosts the effective memory to 576 kB, but this is offset by the display's 22 kB framebuffer, which is shared with the DMA video controller. This shared arrangement reduces CPU performance by up to 35%. It shared a revised logic board with the re-badged Macintosh 128K (previously just called the Macintosh), which streamlined manufacturing. The resolution of the display was the same, at 512 × 342.
Apple sold a memory upgrade for the Macintosh 128K for $995 initially, and reduced the price when 256kb DRAM prices fell months later.[2]
Software[edit]
The applications MacPaint and MacWrite were still bundled with the Mac. Soon after this model was released, several other applications became available, including MacDraw, MacProject, Macintosh Pascal and others. In particular, Microsoft Excel, which was written specifically for the Macintosh, required a minimum of 512 kB of RAM, but solidified the Macintosh as a serious business computer. Models with the enhanced ROM also supported Apple's Switcher, allowing cooperative multitasking among (necessarily few) applications.
New uses[edit]
The LaserWriter printer became available shortly after the 512K's introduction, as well as the number pad, mic, tablet, keyboard, mouse, basic mouse, and much more. It utilized Apple's built-in networking scheme LocalTalk which allows sharing of devices among several users. The 512K was the oldest Macintosh capable of supporting Apple's AppleShare built-in file sharing network, when introduced in 1987. The expanded memory in the 512K allowed it to better handle large word-processing documents and make better use of the graphical user interface and generally increased speed over the 128K model.
System software[edit]
The original 512K could accept Macintosh system software up to version 4.1; System Software 5 was possible if used with the Hard Disk 20.
Upgrades[edit]
System tracking software free download. An updated version replaced the Macintosh 512K and debuted as the Macintosh 512K enhanced in April 1986. It differed from the original 512K in that it had an 800 kB floppy disk drive[3] and the same improved ROM as the Macintosh Plus. With the exception of the new model number (M0001E), they were otherwise cosmetically identical. Spot maps 1 3 2 – map your network using. The stock 512K could also use an 800 kB floppy disk drive as well as the Hard Disk 20, the first hard disk manufactured by Apple exclusively for use with the 512K, but required a special system file (not required by the 512Ke) that loaded the improved ROM code into RAM, thus reducing the available RAM for other uses. Apple offered an upgrade kit which replaced the floppy disk drive and ROMs essentially turning it into a 512Ke. One further OEM upgrade replaced the logicboard and the rear case entirely with that of the Macintosh Plus.[4]
As with the original Macintosh, the 512K was designed with no slots for upgrade boards and had no hard-disk controller, so the few internal upgrades that were available for the 512K, such as General Computer's US$2,795 Hyperdrive hard drive, had to plug directly into the 68000 processor socket.[5] Other such upgrades included 'snap-on' SCSI cards and RAM upgrades of 2 MB or more.
Timeline of compact Macintosh models
See also[edit]
Apple Fat Mac Cheese
References[edit]
The applications MacPaint and MacWrite were still bundled with the Mac. Soon after this model was released, several other applications became available, including MacDraw, MacProject, Macintosh Pascal and others. In particular, Microsoft Excel, which was written specifically for the Macintosh, required a minimum of 512 kB of RAM, but solidified the Macintosh as a serious business computer. Models with the enhanced ROM also supported Apple's Switcher, allowing cooperative multitasking among (necessarily few) applications.
New uses[edit]
The LaserWriter printer became available shortly after the 512K's introduction, as well as the number pad, mic, tablet, keyboard, mouse, basic mouse, and much more. It utilized Apple's built-in networking scheme LocalTalk which allows sharing of devices among several users. The 512K was the oldest Macintosh capable of supporting Apple's AppleShare built-in file sharing network, when introduced in 1987. The expanded memory in the 512K allowed it to better handle large word-processing documents and make better use of the graphical user interface and generally increased speed over the 128K model.
System software[edit]
The original 512K could accept Macintosh system software up to version 4.1; System Software 5 was possible if used with the Hard Disk 20.
Upgrades[edit]
System tracking software free download. An updated version replaced the Macintosh 512K and debuted as the Macintosh 512K enhanced in April 1986. It differed from the original 512K in that it had an 800 kB floppy disk drive[3] and the same improved ROM as the Macintosh Plus. With the exception of the new model number (M0001E), they were otherwise cosmetically identical. Spot maps 1 3 2 – map your network using. The stock 512K could also use an 800 kB floppy disk drive as well as the Hard Disk 20, the first hard disk manufactured by Apple exclusively for use with the 512K, but required a special system file (not required by the 512Ke) that loaded the improved ROM code into RAM, thus reducing the available RAM for other uses. Apple offered an upgrade kit which replaced the floppy disk drive and ROMs essentially turning it into a 512Ke. One further OEM upgrade replaced the logicboard and the rear case entirely with that of the Macintosh Plus.[4]
As with the original Macintosh, the 512K was designed with no slots for upgrade boards and had no hard-disk controller, so the few internal upgrades that were available for the 512K, such as General Computer's US$2,795 Hyperdrive hard drive, had to plug directly into the 68000 processor socket.[5] Other such upgrades included 'snap-on' SCSI cards and RAM upgrades of 2 MB or more.
Timeline of compact Macintosh models
See also[edit]
Apple Fat Mac Cheese
References[edit]
- ^'System Software: Configs for Mac 128K, XL, 512, & 512KE (7/94)'. Archived from the original on February 24, 2008. Retrieved January 21, 2008.
- ^Sandberg-Diment, Erik (March 19, 1985). 'Apple Might Learn a Thing or Two from I.B.M.'The New York Times. p. C4. ISSN0362-4331. Retrieved July 3, 2017.
- ^Apple Inc. (August 22, 1991). 'Double-Density Versus High-Density Disks'. Article ID: 3802. Apple Inc. Archived from the original on March 27, 2008. Retrieved June 28, 2008. 'This article gives the specifications for the 800K floppy disks and the 1.44 MB floppy disks.' 800K Disk has 1600 sectors and 1.44 MB Disk has 2880 sectors. A sector is 512 bytes.
- ^Macintosh Plus: Description (Discontinued) The Macintosh Plus Logic Board Kit
- ^Pournelle, Jerry (March 1985). 'On the Road: Hackercon and COMDEX'. BYTE. p. 313. Retrieved March 19, 2016.
External links[edit]
| Wikimedia Commons has media related to Macintosh 512K. |
- Macintosh 512K technical specifications at apple.com
Erasing your disk: For most reasons to erase, including when reformatting a disk or selling, giving away, or trading in your Mac, you should erase your entire disk. Apple mac high sierra download.
Erasing a volume on your disk: Macbooster 3 0 6 download free. In other cases, such as when your disk contains multiple volumes (or partitions) and you don't want to erase them all, you can erase specific volumes on the disk.
Erasing a disk or volume permanently deletes all of its files. Before continuing, make sure that you have a backup of any files that you want to keep.
How to erase your disk
- Start up from macOS Recovery. Then select Disk Utility from the Utilities window and click Continue.
If you're not erasing the disk your Mac started up from, you don't need to start up from macOS Recovery: just open Disk Utility from the Utilities folder of your Applications folder. - Choose View > Show All Devices from the menu bar in Disk Utility. The sidebar now shows your disks (devices) and any containers and volumes within them. The disk your Mac started up from is at the top of the list. In this example, Apple SSD is the startup disk:
- Select the disk that you want to erase. Don't see your disk?
- Click Erase, then complete these items:
- Name: Type the name that you want the disk to have after you erase it.
- Format: Choose APFS or Mac OS Extended (Journaled). Disk Utility shows a compatible format by default.
- Scheme: Choose GUID Partition Map.
- Click Erase to begin erasing your disk and every container and volume within it. You might be asked to enter your Apple ID. Forgot your Apple ID?
- When done, quit Disk Utility.
- If you want your Mac to be able to start up from the disk you erased, reinstall macOS on the disk.
How to erase a volume on your disk
- Start up from macOS Recovery. Then select Disk Utility from the Utilities window and click Continue.
If you're not erasing the volume your Mac started up from, you don't need to start up from macOS Recovery: just open Disk Utility from the Utilities folder of your Applications folder. - In the sidebar of Disk Utility, select the volume that you want to erase. The volume your Mac started up from is named Macintosh HD, unless you changed its name. Don't see your volume?
- Click Erase, then complete these items:
- Name: Type the name that you want the volume to have after you erase it.
- Format: Choose APFS or Mac OS Extended (Journaled). Disk Utility shows a compatible format by default.
- If you see an Erase Volume Group button, the volume you selected is part of a volume group. In that case, you should erase the volume group. Otherwise, click Erase to erase just the selected volume. You might be asked to enter your Apple ID. Forgot your Apple ID?
- When done, quit Disk Utility.
- If you want your Mac to be able to start up from the volume you erased, reinstall macOS on that volume.
Reasons to erase
You can erase at any time, including in circumstances such as these:
- You want to permanently erase all content from your Mac and restore it to factory settings. This is one of the final steps before selling, giving away, or trading in your Mac.
- You're changing the format of a disk, such as from a PC format (FAT, ExFAT, or NTFS) to a Mac format (APFS or Mac OS Extended).
- You received a message that your disk isn't readable by this computer.
- You're trying to resolve a disk issue that Disk Utility can't repair.
- The macOS installer doesn't see your disk or can't install on it. For example, the installer might say that your disk isn't formatted correctly, isn't using a GUID partition scheme, contains a newer version of the operating system, or can't be used to start up your computer.
- The macOS installer says that you may not install to this volume because it is part of an Apple RAID.
About APFS and Mac OS Extended
Disk Utility in macOS High Sierra or later can erase using either the newer APFS (Apple File System) format or the older Mac OS Extended format, and it automatically chooses a compatible format for you.
How to choose between APFS and Mac OS Extended
Disk Utility tries to detect the type of storage and show the appropriate format in the Format menu. If it can't, it chooses Mac OS Extended, which works with all versions of macOS. If you want to change the format, answer these questions:
- Are you formatting the disk that came built into your Mac?
If the built-in disk came APFS-formatted, Disk Utility suggests APFS. Don't change it to Mac OS Extended. - Are you about to install macOS High Sierra or later for the first time on the disk?
If you need to erase your disk before installing High Sierra or later for the first time on that disk, choose Mac OS Extended (Journaled). During installation, the macOS installer decides whether to automatically convert to APFS—without erasing your files. - Are you preparing a Time Machine backup disk or bootable installer?
Choose Mac OS Extended (Journaled) for any disk that you plan to use as a Time Machine backup disk or as a bootable installer. - Will you be using the disk with another Mac?
If the other Mac isn't using macOS High Sierra or later, choose Mac OS Extended (Journaled). Earlier versions of macOS don't work with APFS-formatted volumes.
How to identify the format currently in use
If you want to know which format is currently in use, use any of these methods:
- Select the volume in the Disk Utility sidebar, then check the information shown on the right. For more detail, choose File > Get Info from the Disk Utility menu bar.
- Open System Information and select Storage in the sidebar. The File System column on the right shows the format of each volume.
- Select the volume in the Finder, then choose File > Get Info from the menu bar. The Get Info window shows the Format of that volume.
Apple Fat Mac And Cheese
If your disk or volume doesn't appear, or the erase fails
- Shut down your Mac, then unplug all nonessential devices from your Mac.
- If you're erasing an external drive, make sure that it's connected directly to your Mac using a cable that you know is good. Then turn the drive off and back on.
- If your disk or volume still doesn't appear in Disk Utility, or Disk Utility reports that the erase process failed, your disk or Mac might need service. If you need help, please contact Apple Support.
Learn more
Apple Fat Grams
- If you can't start up from macOS Recovery, you can use a different startup disk instead.
- If Disk Utility shows a Security Options button in the Erase window, you can click that button to choose between a faster (but less secure) erase and a slower (but more secure) erase. Some older versions of Disk Utility offer the option to zero all data instead. These secure-erase options aren't offered or needed for solid-state drives (SSDs) and flash storage.
