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Apple–Intel architecture

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cannot be used on Intel Macs; the EFI firmware can recognize and boot from USB drives, but it can only do this in EFI mode–when the firmware switches to BIOS mode, it no longer recognizes USB drives, due to lack of a BIOS-mode USB driver. Many operating systems, such as earlier versions of Windows
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GUID Partition Table (GPT) is a standard for the layout of the partition table on a physical hard disk. It is a part of the Extensible Firmware Interface (EFI) standard proposed by Intel as a substitute for the earlier PC BIOS. The GPT replaces the Master Boot Record (MBR) used with BIOS.
1023:. Its presence enforces a form of digital rights management, preventing Mac OS X being installed on stock PCs. The name of the kext is a reference to the Mac OS X license conditions, which allow installation on Apple hardware only. According to Apple, anything else is 1086:, a component exclusive to Apple computers, and can be easily retrieved from it. These two 32-byte keys form a human-readable ASCII string copyrighted by Apple, establishing another possible line of legal defence against prospective clone makers. 1117:), which had a first public beta release for Mac OS X in April 2007. It supports VT-x and can run multiple other guest operating systems, including Windows XP and later. It is available free of charge under either a proprietary license or the 938:
partners to use UEFI boot process on PCs, which made the differences smaller. However, Apple's version of EFI also includes some custom extensions that are utilized during regular macOS boot process, which include the following:
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used on PowerPC-based Macs to the Intel-designed Extensible Firmware Interface (EFI). With the change in processor architecture to x86, Macs gained the ability to boot into x86-native operating systems (such as
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Regardless of the product used, there are inherent limitations and performance penalties in using a virtualized guest OS versus the native macOS or booting an alternative OS solution offered via Boot Camp.
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and Linux, could only be booted in BIOS mode, or were more easily booted or perform better when booted in BIOS mode, and thus USB booting on Intel-based Macs was for a time largely limited to
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among system components, it was believed that the TPM is responsible for handling the DRM protection. It was later proven to not be the case. The keys are actually contained within the
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that gives the user the ability to run and switch between two or more operating systems simultaneously, rather than having to dual-boot and run only one operating system at a time.
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introduction (lead) presents unsourced information, potentially resolvable by adding citations to main body. Furthermore, the article scope is not yet fully reflected in the lead.
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in the Apple–Intel architecture is accomplished via the "Dont Steal Mac OS X.kext," sometimes referred to as DSMOS or DSMOSX, a file present in Intel-capable versions of the
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Booting to non-Mac operating systems is possible by holding the option key while booting to select an operating system other than macOS to which the user would like to boot.
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architectures. Since many operating systems, such as Windows XP and many versions of Windows Vista, are incompatible with EFI, Apple released a firmware upgrade with a
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Mac OS X. The kext is located at /System/Library/Extensions on the volume containing the operating system. The extension contains a kernel function called
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keyboard interconnect. PS/2 also used to be the standard for PC laptop pointing devices, although a variety of other interfaces, including USB,
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decryption of "apple-protected" programs. A system lacking a proper key will not be able to run the Apple-restricted binaries, which include
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as the boot firmware. At the time the platform debuted in 2006, it was in a stark contrast to PCs, which almost universally employed legacy
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are entirely compatible. However, Apple computers also include some custom hardware and design choices not found in competing systems:
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that would allow booting contemporary standard PC operating systems. Apple updated the firmware with CSM support with the release of
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rely on BIOS mode to initialize the video hardware, and hence under EFI-booting, Linux and X do not have hardware accelerated video.
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with support locating the bootloader based on the "blessed directory" and "blessed file" properties of HFS+ and APFS volumes. The
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Rudimentary pre-boot GUI framework, including support for image drawing, mouse cursor and events. This is used by
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additionally uses a custom internal USB device dubbed "iBridge" as an interface to the Touch Bar and
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Intel-based Mac computers use very similar hardware to PCs from other manufacturers that ship with
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became necessary. Extensible Firmware Interface (EFI) is the firmware-based replacement for the PC
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Intel Macs can boot in two ways: directly via EFI, or in a "legacy" BIOS compatibility mode. For
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of Intel-based Apple computers. For information about the transition to this architecture, see
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Other non-standard EFI services for managing various firmware features such as the computer's
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used in their successors. As Apple changed the architecture of its products, they changed the
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After the initial announcement of first Intel-based Mac hardware configurations, reporting a
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Please help update this article to reflect recent events or newly available information.
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is a custom Apple chip that controls various functions of the computer related to
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and booting alternative operating systems on Mac computers – Apple only provides
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The references used may be made clearer with a different or consistent style of
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also offers a Mac virtualization product competing with Parallels called
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is another piece of virtualization software originally from Innotek (now
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Service Pack 2. The first non-beta version of Boot Camp is included in
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Unofficial name used for Macintosh models that use Intel x86 processors
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Boot process. All Intel-based Macs have been using some version of
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Additional custom hardware may include a GMUX chip that controls
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from Intel. Designed by Intel, it was chosen by Apple to replace
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to present the login screen before loading the operating system.
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is thus not used or necessary for regular macOS boot process.
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On April 5, 2006, Apple made available for download a public
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that provides a subset of traditional BIOS support with its
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Some of these differences can pose as obstacles both to
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Intel EFI open-source implementation, code-name 'Tiano'
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need to be written by third parties, usually volunteer
873:(Mac) keys function equivalently; the same is true for 1213:"Apple to Use Intel Microprocessors Beginning in 2006" 860:, some functional differences occur. For example, the 30:"Apple Intel" redirects here. Not to be confused with 1753:"Understanding Apple's Binary Protection in Mac OS X" 1369:"Program crash on open, will not load iTunes library" 1105:
The first virtualization software for Intel Macs was
1298:"Technology | Apple makes Macs run Windows XP" 901:, although some of them are accessible through the 599: 169:. Unsourced material may be challenged and removed. 1098:, which allows for high performance (near-native) 1725: 1944: 1879:"The GNU General Public License (GPL) Version 3" 722: 1557:"Print Screen on Windows 7 with Apple Keyboard" 997:); drivers for other operating systems such as 681: 1775:""TPM DRM" In Mac OS X: A Myth That Won't Die" 1189:"UEFI firmware security in an Intel-based Mac" 760: 1483:"GPU switching support for Apple Macbook Pro" 614:With the change in architecture, a change in 489: 387:processors used in their predecessors or the 1798: 1008: 666:is commonly used for added configurability. 1690:: CS1 maint: numeric names: authors list ( 1094:The processors found in Intel Macs support 650: 547:. Unsourced material may be challenged and 71:Learn how and when to remove these messages 1530: 1480: 1413: 764:below). Intel-based Mac doesn't implement 496: 482: 1719: 1438: 791:interconnect. Since the 2013 revision of 567:Learn how and when to remove this message 341:Learn how and when to remove this message 287:Learn how and when to remove this message 229:Learn how and when to remove this message 127:Learn how and when to remove this message 1668:"FileVault 2 – UEFI – InsanelyMac Forum" 1602: 1600: 1441:"Linux driver for Synaptics USB devices" 1416:"State of Linux on the MacBook Pro 2016" 926:in April 2006, and since the release of 691: 1665: 1150: 1945: 1801:"Running Mac OS X as a QEMU/KVM Guest" 1772: 1750: 1726:Victor Mihailescu (January 13, 2006). 779:computers used an internal variant of 678:, which can easily be booted via EFI. 1901: 1597: 852:. While PC keyboards can be used in 844:has significant differences between 545:adding citations to reliable sources 512: 298: 240: 167:adding citations to reliable sources 138: 77: 36: 979:running macOS on non-Apple hardware 834:and non-standard configurations of 830:, non-compliant implementations of 13: 1608:"Myths and Facts About Intel Macs" 1505: 1145:Mac transition to Intel processors 735:operating systems. In particular, 25:Mac transition to Intel processors 14: 1979: 1931: 1089: 361:, is an unofficial name used for 52:This article has multiple issues. 795:, Apple started to use a custom 600:The EFI and GUID Partition Table 517: 433: 303: 245: 143: 82: 41: 1916:from the original on 2023-08-11 1895: 1871: 1860:from the original on 2023-08-11 1842: 1831:from the original on 2023-08-11 1813: 1792: 1766: 1744: 1698: 1659: 1646:"bless(8) Mac OS X Manual Page" 1638: 1624: 1573: 1549: 1524: 1499: 1474: 1453: 1432: 1407: 1386: 1361: 508: 154:needs additional citations for 60:or discuss these issues on the 1340: 1315: 1290: 1274:"Change your Mac startup disk" 1266: 1250:"Mac startup key combinations" 1242: 1229: 1205: 1181: 1157: 856:, as well as Mac keyboards in 368:developed and manufactured by 1: 1777:. Osxbook.com. Archived from 723:Differences from standard PCs 606:Extensible Firmware Interface 594:Extensible Firmware Interface 579: 385:Motorola 68000 ("68k") series 1902:Cheng, Jacqui (2007-02-08). 1325:. 2007-03-06. Archived from 1084:System Management Controller 985:for its custom hardware for 920:Compatibility Support Module 771:Laptop input devices. Early 752:System Management Controller 682:To non-Mac operating systems 632:Compatibility Support Module 379:processors, rather than the 7: 1138: 807:components, as well as the 797:Serial Peripheral Interface 418:with macOS as the host OS. 10: 1984: 1634:. Microsoft. January 2013. 1396:. The Register. 2013-07-15 685: 645: 603: 178:"Apple–Intel architecture" 29: 19:This article is about the 18: 1531:Leif Liddy (2016-01-09). 1461:"TouchPad Driver Support" 1169:docs.elementscompiler.com 1107:Parallels Desktop for Mac 1014:Digital rights management 1009:Digital rights management 761:Digital Rights Management 312:This article needs to be 1375:. serato.com. 2009-10-29 799:controller instead. The 696:Mac Mini with Intel Core 651:To Mac operating systems 590:standard PC architecture 470:Developer Transition Kit 355:Apple–Intel architecture 96:may need to be rewritten 1728:"Don't Steal Mac OS X!" 1080:Trusted Platform Module 98:. The reason given is: 1850:"News (older entries)" 1666:vit9696 (2016-10-28). 697: 1612:refit.sourceforge.net 1373:Software help archive 695: 416:native virtualization 1708:. Oracle Corporation 1151:References and notes 955:EFI System Partition 688:Boot Camp (software) 610:GUID Partition Table 541:improve this section 163:improve this article 1537:bugzilla.kernel.org 1512:bugzilla.kernel.org 1165:"CPU Architectures" 971:and boot arguments. 832:solid-state storage 823:, may also be used. 1958:IBM PC compatibles 1953:Macintosh platform 1799:Gabriel L. Somlo. 1115:Oracle Corporation 698: 366:personal computers 32:Apple Intelligence 1506:TJ (2015-09-29). 991:Microsoft Windows 934:has required its 858:Microsoft Windows 729:Microsoft Windows 577: 576: 569: 506: 505: 425:Mac transition to 408:Microsoft Windows 351: 350: 343: 333: 332: 297: 296: 289: 239: 238: 231: 213: 137: 136: 129: 109:lead layout guide 75: 1975: 1968:64-bit computers 1963:32-bit computers 1925: 1924: 1922: 1921: 1899: 1893: 1892: 1890: 1889: 1875: 1869: 1868: 1866: 1865: 1846: 1840: 1839: 1837: 1836: 1817: 1811: 1810: 1808: 1807: 1796: 1790: 1789: 1787: 1786: 1770: 1764: 1763: 1761: 1760: 1748: 1742: 1741: 1739: 1738: 1723: 1717: 1716: 1714: 1713: 1702: 1696: 1695: 1689: 1681: 1679: 1678: 1663: 1657: 1656: 1654: 1653: 1642: 1636: 1635: 1628: 1622: 1621: 1619: 1618: 1604: 1595: 1594: 1592: 1591: 1577: 1571: 1570: 1568: 1567: 1553: 1547: 1546: 1544: 1543: 1528: 1522: 1521: 1519: 1518: 1503: 1497: 1496: 1494: 1493: 1481:Andreas Heider. 1478: 1472: 1471: 1469: 1468: 1457: 1451: 1450: 1448: 1447: 1436: 1430: 1429: 1427: 1426: 1414:Daniel Roschka. 1411: 1405: 1404: 1402: 1401: 1390: 1384: 1383: 1381: 1380: 1365: 1359: 1358: 1356: 1355: 1344: 1338: 1337: 1335: 1334: 1319: 1313: 1312: 1310: 1309: 1294: 1288: 1287: 1285: 1284: 1270: 1264: 1263: 1261: 1260: 1246: 1240: 1235:Note, Linux and 1233: 1227: 1226: 1224: 1223: 1209: 1203: 1202: 1200: 1199: 1185: 1179: 1178: 1176: 1175: 1161: 1074: 1070: 1066: 1062: 1058: 1054: 1050: 1046: 1042: 1038: 1030: 1029:page_transform() 1021:operating system 942:Drivers for the 850:IBM PC keyboards 801:2016 MacBook Pro 756:power management 572: 565: 561: 558: 552: 521: 513: 498: 491: 484: 455:Universal binary 437: 427:Intel processors 421: 420: 346: 339: 328: 325: 319: 307: 306: 299: 292: 285: 281: 278: 272: 249: 248: 241: 234: 227: 223: 220: 214: 212: 171: 147: 139: 132: 125: 121: 118: 112: 105:improve the lead 86: 85: 78: 67: 45: 44: 37: 1983: 1982: 1978: 1977: 1976: 1974: 1973: 1972: 1943: 1942: 1934: 1929: 1928: 1919: 1917: 1900: 1896: 1887: 1885: 1877: 1876: 1872: 1863: 1861: 1848: 1847: 1843: 1834: 1832: 1819: 1818: 1814: 1805: 1803: 1797: 1793: 1784: 1782: 1771: 1767: 1758: 1756: 1749: 1745: 1736: 1734: 1724: 1720: 1711: 1709: 1704: 1703: 1699: 1683: 1682: 1676: 1674: 1672:insanelymac.com 1664: 1660: 1651: 1649: 1644: 1643: 1639: 1630: 1629: 1625: 1616: 1614: 1606: 1605: 1598: 1589: 1587: 1579: 1578: 1574: 1565: 1563: 1555: 1554: 1550: 1541: 1539: 1529: 1525: 1516: 1514: 1504: 1500: 1491: 1489: 1479: 1475: 1466: 1464: 1459: 1458: 1454: 1445: 1443: 1439:Jan Steinhoff. 1437: 1433: 1424: 1422: 1412: 1408: 1399: 1397: 1392: 1391: 1387: 1378: 1376: 1367: 1366: 1362: 1353: 1351: 1346: 1345: 1341: 1332: 1330: 1321: 1320: 1316: 1307: 1305: 1296: 1295: 1291: 1282: 1280: 1272: 1271: 1267: 1258: 1256: 1248: 1247: 1243: 1234: 1230: 1221: 1219: 1211: 1210: 1206: 1197: 1195: 1187: 1186: 1182: 1173: 1171: 1163: 1162: 1158: 1153: 1141: 1092: 1072: 1068: 1064: 1060: 1056: 1052: 1048: 1044: 1040: 1036: 1028: 1011: 906: 898: 892: 886: 879: 872: 865: 842:Keyboard layout 809:FaceTime Camera 725: 690: 684: 653: 648: 612: 604:Main articles: 602: 582: 573: 562: 556: 553: 538: 522: 511: 502: 426: 347: 336: 335: 334: 329: 323: 320: 317: 308: 304: 293: 282: 276: 273: 262: 256:has an unclear 250: 246: 235: 224: 218: 215: 172: 170: 160: 148: 133: 122: 116: 113: 102: 87: 83: 46: 42: 35: 28: 17: 12: 11: 5: 1981: 1971: 1970: 1965: 1960: 1955: 1941: 1940: 1933: 1932:External links 1930: 1927: 1926: 1894: 1883:virtualbox.org 1870: 1854:virtualbox.org 1841: 1827:. 2016-06-14. 1812: 1791: 1765: 1743: 1718: 1697: 1658: 1637: 1623: 1596: 1572: 1548: 1523: 1498: 1473: 1452: 1431: 1406: 1385: 1360: 1339: 1314: 1289: 1265: 1241: 1228: 1217:Apple Newsroom 1204: 1180: 1155: 1154: 1152: 1149: 1148: 1147: 1140: 1137: 1100:virtualization 1091: 1090:Virtualization 1088: 1049:SystemUIServer 1031:that performs 1010: 1007: 975: 974: 973: 972: 965: 958: 908: 902: 896: 888: 881: 874: 867: 861: 839: 824: 769: 724: 721: 717:Mac OS X v10.5 686:Main article: 683: 680: 652: 649: 647: 644: 601: 598: 581: 578: 575: 574: 525: 523: 516: 510: 507: 504: 503: 501: 500: 493: 486: 478: 475: 474: 473: 472: 467: 462: 457: 452: 447: 439: 438: 430: 429: 349: 348: 331: 330: 311: 309: 302: 295: 294: 258:citation style 253: 251: 244: 237: 236: 151: 149: 142: 135: 134: 91:The article's 90: 88: 81: 76: 50: 49: 47: 40: 15: 9: 6: 4: 3: 2: 1980: 1969: 1966: 1964: 1961: 1959: 1956: 1954: 1951: 1950: 1948: 1939: 1936: 1935: 1915: 1911: 1910: 1905: 1898: 1884: 1880: 1874: 1859: 1855: 1851: 1845: 1830: 1826: 1822: 1816: 1802: 1795: 1781:on 2020-01-03 1780: 1776: 1769: 1755:. 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Index

architecture
Mac transition to Intel processors
Apple Intelligence
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talk page
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lead section
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lead layout guide
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verification
improve this article
adding citations to reliable sources
"Apple–Intel architecture"
news
newspapers
books
scholar
JSTOR
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citation style
citation
footnoting
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Macintosh
personal computers
Apple Inc.
Intel

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