The process in El Capitan is (compared with root-canal work, income taxes, or previous versions of OS X) relatively painless. How to install (or reinstall) OS X. In theory, you should have to install El Capitan only once, or never if your Mac came with El Capitan preinstalled. And in a perfect world, that would be the case. OS X El Capitan is the twelfth major release of OS X for Mac computers. It was released on September 30, 2015. Some users have reported an issue where Mac refuses to finish booting after updating to OS X EL Capitan. If your Mac will not start up, stalls on a gray screen with an Apple logo, here is how you troubleshoot.
Check compatibility
You can upgrade to OS X El Capitan from OS X Snow Leopard or later on any of the following Mac models. Your Mac also needs at least 2GB of memory and 8.8GB of available storage space.
MacBook introduced in 2009 or later, plus MacBook (13-inch, Aluminum, Late 2008)
MacBook Air introduced in late 2008 or later
MacBook Pro introduced in mid 2007 or later
Mac mini introduced in early 2009 or later
iMac introduced in mid 2007 or later
Mac Pro introduced in early 2008 or later
Xserve models introduced in early 2009
To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . If your Mac isn't compatible with OS X El Capitan, the installer will let you know.
Make a backup
Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.
Get connected
It takes time to download and install OS X, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.
Download OS X El Capitan
For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of macOS.
If you still need OS X El Capitan, use this link: Download OS X El Capitan. A file named InstallMacOSX.dmg will download to your Mac.
Install the macOS installer
Double-click the downloaded file to open a window showing its contents. Then double-click the file within, named InstallMacOSX.pkg.
Follow the onscreen instructions, which will guide you through the steps necessary to install.
Begin installation
After installation of the installer is complete, open the Applications folder on your Mac, then double-click the file named Install OS X El Capitan.
Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.
Office For Mac El Capitan
Allow installation to complete
Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both OS X and related updates to your Mac firmware.
Learn more
- OS X El Capitan won't install on top of a later version of macOS, but you can erase your disk first or install on another disk.
- You can use macOS Recovery to reinstall macOS.
For the protection of our customers, Apple does not disclose, discuss, or confirm security issues until a full investigation has occurred and any necessary patches or releases are available. To learn more about Apple Product Security, see the Apple Product Security website.
For information about the Apple Product Security PGP Key, see How to use the Apple Product Security PGP Key.
Where possible, CVE IDs are used to reference the vulnerabilities for further information.
To learn about other security updates, see Apple security updates.
OS X El Capitan 10.11.2, Security Update 2015-005 Yosemite, and Security Update 2015-008 Mavericks
apache_mod_php
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: Multiple vulnerabilities in PHP
Description: Multiple vulnerabilities existed in PHP versions prior to 5.5.29, the most serious of which may have led to remote code execution. These were addressed by updating PHP to version 5.5.30.
CVE-ID
CVE-2015-7803
Apr 17, 2015 How to Transfer iPhoto Library to Photos App on Mac OS X Yosemite. Click on Finder and Go to your Pictures folder. You’ll see Photos Library and iPhoto Library. Open Photos Library and make sure there is nothing inside. Mar 20, 2015 Apple fixed things so that version 9.6 was not going to launch under Yosemite, so many iPhoto fans, who did not check in at the App Store to download the final upgrade before the window abruptly closed, got angry and cursed Apple for leaving them in the lurch. Sep 10, 2015 From what I read elsewhere, Apple no longer has iPhoto available in the apps tore at all. It would appear they have removed it in order to force everyone who doesn’t have the latest version of iPhoto (which runs on Yosemite and El Capitan) to move over to Photo. Jul 11, 2015 Getting iPhoto Working Again in OS X Yosemite Just to make sure that you are facing the exact issue that we have a solution for, you need to first launch the app and see the error message. Click on Launchpad in your dock, search for and click on iPhoto, and it will open (to show you an error message). Iphoto download.
CVE-2015-7804
El Capitan For Mac Download
AppSandbox
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A malicious application may maintain access to Contacts after having access revoked
Description: An issue existed in the sandbox's handling of hard links. This issue was addressed through improved hardening of the app sandbox.
CVE-ID
CVE-2015-7001 : Razvan Deaconescu and Mihai Bucicoiu of University POLITEHNICA of Bucharest; Luke Deshotels and William Enck of North Carolina State University; Lucas Vincenzo Davi and Ahmad-Reza Sadeghi of TU Darmstadt
Bluetooth
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A local user may be able to execute arbitrary code with system privileges
Description: A memory corruption issue existed in the Bluetooth HCI interface. This issue was addressed through improved memory handling.
CVE-ID
CVE-2015-7108 : Ian Beer of Google Project Zero
CFNetwork HTTPProtocol
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: An attacker with a privileged network position may be able to bypass HSTS
Description: An input validation issue existed within URL processing. This issue was addressed through improved URL validation.
CVE-ID
CVE-2015-7094 : Tsubasa Iinuma (@llamakko_cafe) of Gehirn Inc. and Muneaki Nishimura (nishimunea)
Compression
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: Visiting a maliciously crafted website may lead to arbitrary code execution
Description: An uninitialized memory access issue existed in zlib. This issue was addressed through improved memory initialization and additional validation of zlib streams.
CVE-ID
CVE-2015-7054 : j00ru
Configuration Profiles
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A local attacker may be able to install a configuration profile without admin privileges
Description: An issue existed when installing configuration profiles. This issue was addressed through improved authorization checks.
CVE-ID
CVE-2015-7062 : David Mulder of Dell Software
CoreGraphics
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, OS X El Capitan v10.11 and v10.11.1
Impact: Processing a maliciously crafted font file may lead to arbitrary code execution
Description: A memory corruption issue existed in the processing of font files. This issue was addressed through improved input validation.
CVE-ID
CVE-2015-7105 : John Villamil (@day6reak), Yahoo Pentest Team
CoreMedia Playback
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, OS X El Capitan v10.11 and v10.11.1
Impact: Visiting a maliciously crafted website may lead to arbitrary code execution
Description: Multiple memory corruption issues existed in the processing of malformed media files. These issues were addressed through improved memory handling.
CVE-ID
CVE-2015-7074 : Apple
CVE-2015-7075
Disk Images
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A local user may be able to execute arbitrary code with kernel privileges
Description: A memory corruption issue existed in the parsing of disk images. This issue was addressed through improved memory handling.
CVE-ID
CVE-2015-7110 : Ian Beer of Google Project Zero
EFI
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A local user may be able to execute arbitrary code with system privileges
Description: A path validation issue existed in the kernel loader. This was addressed through improved environment sanitization.
CVE-ID
CVE-2015-7063 : Apple
File Bookmark
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A sandboxed process may be able to circumvent sandbox restrictions
Description: A path validation issue existed in app scoped bookmarks. This was addressed through improved environment sanitization.
CVE-ID
CVE-2015-7071 : Apple
Hypervisor
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A local user may be able to execute arbitrary code with system privileges
Description: A use after free issue existed in the handling of VM objects. This issue was addressed through improved memory management.
CVE-ID
CVE-2015-7078 : Ian Beer of Google Project Zero
iBooks
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: Parsing a maliciously crafted iBooks file may lead to disclosure of user information
Description: An XML external entity reference issue existed with iBook parsing. This issue was addressed through improved parsing.
CVE-ID
CVE-2015-7081 : Behrouz Sadeghipour (@Nahamsec) and Patrik Fehrenbach (@ITSecurityguard)
ImageIO
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, OS X El Capitan v10.11 and v10.11.1
Impact: Processing a maliciously crafted image may lead to arbitrary code execution
Description: A memory corruption issue existed in ImageIO. This issue was addressed through improved memory handling.
CVE-ID
CVE-2015-7053 : Apple
Mac Yosemite
Intel Graphics Driver
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A local user may be able to execute arbitrary code with system privileges
Description: A null pointer dereference issue was addressed through improved input validation.
CVE-ID
CVE-2015-7076 : Juwei Lin of TrendMicro, beist and ABH of BoB, and JeongHoon Shin@A.D.D
Intel Graphics Driver
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A local user may be able to execute arbitrary code with system privileges
Description: A memory corruption issue existed in the Intel Graphics Driver. This issue was addressed through improved memory handling.
CVE-ID
CVE-2015-7106 : Ian Beer of Google Project Zero, Juwei Lin of TrendMicro, beist and ABH of BoB, and JeongHoon Shin@A.D.D
Intel Graphics Driver
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A local user may be able to execute arbitrary code with system privileges
Description: An out of bounds memory access issue existed in the Intel Graphics Driver. This issue was addressed through improved memory handling.
CVE-ID
CVE-2015-7077 : Ian Beer of Google Project Zero
IOAcceleratorFamily
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A malicious application may be able to execute arbitrary code with system privileges
Description: A memory corruption issue existed in IOAcceleratorFamily. This issue was addressed through improved memory handling.
CVE-ID
CVE-2015-7109 : Juwei Lin of TrendMicro
IOHIDFamily
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A malicious application may be able to execute arbitrary code with system privileges
Description: Multiple memory corruption issues existed in IOHIDFamily API. These issues were addressed through improved memory handling.
CVE-ID
CVE-2015-7111 : beist and ABH of BoB
CVE-2015-7112 : Ian Beer of Google Project Zero
IOKit SCSI
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A malicious application may be able to execute arbitrary code with kernel privileges
Description: A null pointer dereference existed in the handling of a certain userclient type. This issue was addressed through improved validation.
CVE-ID
CVE-2015-7068 : Ian Beer of Google Project Zero
IOThunderboltFamily
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A local user may be able to cause a system denial of service
Description: A null pointer dereference existed in IOThunderboltFamily's handling of certain userclient types. This issue was addressed through improved validation of IOThunderboltFamily contexts.
CVE-ID
CVE-2015-7067 : Juwei Lin of TrendMicro
Kernel
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A local application may be able to cause a denial of service
Description: Multiple denial of service issues were addressed through improved memory handling.
CVE-ID
CVE-2015-7040 : Lufeng Li of Qihoo 360 Vulcan Team
CVE-2015-7041 : Lufeng Li of Qihoo 360 Vulcan Team
CVE-2015-7042 : Lufeng Li of Qihoo 360 Vulcan Team
CVE-2015-7043 : Tarjei Mandt (@kernelpool)
Kernel
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A local user may be able to execute arbitrary code with kernel privileges
Description: Multiple memory corruption issues existed in the kernel. These issues were addressed through improved memory handling.
CVE-ID
CVE-2015-7083 : Ian Beer of Google Project Zero
CVE-2015-7084 : Ian Beer of Google Project Zero
Kernel
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A local user may be able to execute arbitrary code with kernel privileges
Description: An issue existed in the parsing of mach messages. This issue was addressed through improved validation of mach messages.
CVE-ID
CVE-2015-7047 : Ian Beer of Google Project Zero
kext tools
Available for: OS X El Capitan v10.11 and v10.11.1
Icons for mac os catalina download and application folders for windows 7. Let go of the keysTo reset SMC1. Hold down the keys until your Mac reboots5. Immediately press Command + Option + P + R keys4.
Impact: A local user may be able to execute arbitrary code with kernel privileges
Description: A validation issue existed during the loading of kernel extensions. This issue was addressed through additional verification.
CVE-ID
CVE-2015-7052 : Apple
Keychain Access
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A malicious application may be able to masquerade as the Keychain Server.
Description: An issue existed in how Keychain Access interacted with Keychain Agent. This issue was resolved by removing legacy functionality.
CVE-ID
CVE-2015-7045 : Luyi Xing and XiaoFeng Wang of Indiana University Bloomington, Xiaolong Bai of Indiana University Bloomington and Tsinghua University, Tongxin Li of Peking University, Kai Chen of Indiana University Bloomington and Institute of Information Engineering, Xiaojing Liao of Georgia Institute of Technology, Shi-Min Hu of Tsinghua University, and Xinhui Han of Peking University
libarchive
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, OS X El Capitan v10.11 and v10.11.1
Impact: Visiting a maliciously crafted website may lead to arbitrary code execution
Description: A memory corruption issue existed in the processing of archives. This issue was addressed through improved memory handling.
CVE-ID
CVE-2011-2895 : @practicalswift
libc
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: Processing a maliciously crafted package may lead to arbitrary code execution
Description: Multiple buffer overflows existed in the C standard library. These issues were addressed through improved bounds checking.
CVE-ID
CVE-2015-7038 : Brian D. Wells of E. W. Scripps, Narayan Subramanian of Symantec Corporation/Veritas LLC
CVE-2015-7039 : Maksymilian Arciemowicz (CXSECURITY.COM)
Entry updated March 3, 2017
libexpat
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: Multiple vulnerabilities in expat
Description: Multiple vulnerabilities existed in expat version prior to 2.1.0. These were addressed by updating expat to versions 2.1.0.
CVE-ID
CVE-2012-0876 : Vincent Danen
CVE-2012-1147 : Kurt Seifried
CVE-2012-1148 : Kurt Seifried
libxml2
Android emulator for el capitan mac. The necessities for this are as follows:. The Mac Os ought to be higher than 10.12, i.e., Sierra.
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, OS X El Capitan v10.11 and v10.11.1
Impact: Parsing a maliciously crafted XML document may lead to disclosure of user information
Description: A memory corruption issue existed in the parsing of XML files. This issue was addressed through improved memory handling.
CVE-ID
CVE-2015-7115 : Wei Lei and Liu Yang of Nanyang Technological University
CVE-2015-7116 : Wei Lei and Liu Yang of Nanyang Technological University
OpenGL
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, OS X El Capitan v10.11 and v10.11.1
Impact: Visiting a maliciously crafted website may lead to arbitrary code execution
Description: Multiple memory corruption issues existed in OpenGL. These issues were addressed through improved memory handling.
CVE-ID
CVE-2015-7064 : Apple
CVE-2015-7065 : Apple
CVE-2015-7066 : Tongbo Luo and Bo Qu of Palo Alto Networks
OpenLDAP
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A remote unauthenticated client may be able to cause a denial of service
Description: An input validation issue existed in OpenLDAP. This issue was addressed through improved input validation.
CVE-ID
CVE-2015-6908
OpenSSH
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: Multiple vulnerabilities in LibreSSL
Description: Multiple vulnerabilities existed in LibreSSL versions prior to 2.1.8. These were addressed by updating LibreSSL to version 2.1.8.
CVE-ID
CVE-2015-5333
CVE-2015-5334
QuickLook
Or, they changed the URLs and the CS6 apps can't find them as they're looking for them in the original locations.I don't have a suggestion for Acrobat Pro, other than that app in particular has always been very fussy about the OS it's running under. Dc for mac mojave. Apple Footer.This site contains user submitted content, comments and opinions and is for informational purposes only. Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Apple can therefore provide no guarantee as to the efficacy of any proposed solutions on the community forums. If the OS is even just one level newer than Adobe notes it's supported for, you can pretty much expect it to hiccup.
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, OS X El Capitan v10.11 and v10.11.1
Impact: Opening a maliciously crafted iWork file may lead to arbitrary code execution
Description: A memory corruption issue existed in the handling of iWork files. This issue was addressed through improved memory handling.
CVE-ID
CVE-2015-7107
Sandbox
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A malicious application with root privileges may be able to bypass kernel address space layout randomization
Description: An insufficient privilege separation issue existed in xnu. This issue was addressed by improved authorization checks.
CVE-ID
CVE-2015-7046 : Apple
Security
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A remote attacker may cause an unexpected application termination or arbitrary code execution
Description: A memory corruption issue existed in handling SSL handshakes. This issue was addressed through improved memory handling.
CVE-ID
CVE-2015-7073 : Benoit Foucher of ZeroC, Inc.
Security
Available for: OS X Mavericks v10.9.5 and OS X Yosemite v10.10.5
Impact: Processing a maliciously crafted certificate may lead to arbitrary code execution
Description: Multiple memory corruption issues existed in the ASN.1 decoder. These issues were addressed through improved input validation
CVE-ID
CVE-2015-7059 : David Keeler of Mozilla
CVE-2015-7060 : Tyson Smith of Mozilla
CVE-2015-7061 : Ryan Sleevi of Google
Security
Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, OS X El Capitan v10.11 and v10.11.1
Impact: A malicious application may gain access to a user's Keychain items
Description: An issue existed in the validation of access control lists for keychain items. This issue was addressed through improved access control list checks.
CVE-ID
CVE-2015-7058
System Integrity Protection
Available for: OS X El Capitan v10.11 and v10.11.1
Impact: A malicious application with root privileges may be able to execute arbitrary code with system privileges
Description: A privilege issue existed in handling union mounts. This issue was addressed by improved authorization checks.
CVE-ID
CVE-2015-7044 : MacDefender
Notes
- Security Update 2015-005 and 2015-008 is recommended for all users and improves the security of OS X. After installing this update, the QuickTime 7 web browser plug-in will no longer be enabled by default. Learn what to do if you still need this legacy plug-in.
- OS X El Capitan v10.11.2 includes the security content of Safari 9.0.2.