Apple macOS High Sierra Exploit Lets Hackers Steal Keychain Passwords in Plaintext September 26, 2017 Swati Khandelwal Apple yesterday rolled out a new version of its macOS operating system, dubbed High Sierra 10.13 —a few hours before an ex-NSA hacker publicly disclosed the details of a critical vulnerability that affects High Sierra as well. The exploit appears to be a second-stage payload, as it would require an initial hack that would run malicious code on an macOS High Sierra device. Wardle added that it is no longer difficult to. MacOS High Sierra installer. Time: make sure you have 30 minutes and 1 hour for this because this process takes time. How to Download the macOS High Sierra installer.app for Unsupported mac (2021 updated) just visit dosdude1.com and download the complete macOS high sierra installer app (need a fast internet connection).
With some time to kill and an array of old Apple computers on hand, [Pierre Dandumont] wondered if he could continuously upgrade a single OS drive from the oldest system he had, System 7.1 on a Performa 630, to the latest version of MacOS on a MacBook Air. He recalled watching an old video which demonstrated a continuous upgrade from DOS to Windows 10 (we think this video from 2016 may be the one), which gave him the inspiration for this journey. [Pierre] documents his efforts on his blog (in French; English translated link is here).
Along the way, he installed 24 different operating systems
- System 7.1.2, 7.5
- Mac OS 7.6
- Mac OS 8.0, 8.1, 8.5, 8.6
- Mac OS 9.0, 9.1, 9.2
- Mac OS X 10.0 – 10.11
- macOS 10.12, 10.13
on seven Mac computers
- Performa 630 (ca. 1994, Motorola 68040)
- Power Mac G3 Beige (ca. 1997, Motorola PowerPC 730)
- Power Mac G3 Blue (ca. 1999, Motorola PowerPC 730)
- Power Mac G4 Digital Audio (ca. 2001, Motorola PowerPC 7400)
- Mac mini G4 (ca. 2005, Motorola PowerPC 7447)
- Mac mini 2009 (Intel Core 2 Duo Penryn)
- MacBook Air 2012 (Intel Core i5/i7)
across three of the four processor families spanned by the Macintosh line of computers since their introduction in 1984. You can see in the lead photo the success, where the Mac OS 8 search tool Sherlock is shown in the dock of a MacBook Air running High Sierra.
The process was not without its glitches, most of them having to do with the OS disk partitioning and format. [Pierre] selected an M.2 SATA solid state disk drive, which with the appropriate adaptors, can present itself as a parallel ATA drive, a serial ATA drive, or just used directly as an M.2 SSD in the more modern computers. Making the project more challenging was that [Pierre] wanted to record the video of the process, which involved capturing the computer screen during all the various upgrades. He kept a disk image backup at each stage of the process, so he could recover from errors without having to start all over again.
What eventually stopped the journey was the file system. [Pierre]’s SSD began using HFS file system, but somewhere during the Power Mac G3 Beige phase of the migration, he had to upgrade to the HFS+ (extended HFS) file system, an exercise not for the faint hearted. This HFS+ file system had to be extended and tweaked a couple of times along the way, as well. But the journey came to an abrupt halt at macOS 10.13 High Sierra. The next release, 10.14 Mojave, requires the APFS file system (not to be confused with the now-deprecated AFP file system). [Pierre] believes even that could be overcome, as the issue seems to stem from the minimum block size of 4096 bytes imposed by APFS. It seems possible this could be overcome by cloning the drive, but that would go against the spirit of his original challenge.
Be forewarned, the video below the break is a 2 hour “abbreviated” version of the whole process (the DOS to Windows 10 video clocks in at 11 hours). We’re not sure what practical purpose this serves, but it was certainly intriguing to read about the process and the hiccups that [Pierre] had to solve along the way. What’s the longest that you’ve kept migrating a system drive on your computers? Let us know in the comments down below.
To get the latest features and maintain the security, stability, compatibility, and performance of your Mac, it's important to keep your software up to date. Apple recommends that you always use the latest macOS that is compatible with your Mac.
Learn how to upgrade to macOS Big Sur, the latest version of macOS.
Check compatibility
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The version of macOS that came with your Mac is the earliest version it can use. For example, if your Mac came with macOS Big Sur, it will not accept installation of macOS Catalina or earlier.
If a macOS can't be used on your Mac, the App Store or installer will let you know. For example, it might say that it's not compatible with this device or is too old to be opened on this version of macOS. To confirm compatibility before downloading, check the minimum hardware requirements:
High Sierra Hackintosh Guide
- macOS Catalina 10.15 hardware requirements
- macOS Mojave 10.14 hardware requirements
- macOS High Sierra 10.13 hardware requirements
- macOS Sierra 10.12 hardware requirements
- OS X El Capitan 10.11 hardware requirements
- OS X Yosemite 10.10 hardware requirements
Download macOS using Safari on your Mac
Safari uses these links to find the old installers in the App Store. After downloading from the App Store, the installer opens automatically.
High Sierra Hackamores
- macOS Catalina 10.15 can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks
- macOS Mojave 10.14 can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
- macOS High Sierra 10.13 can upgrade Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
Safari downloads the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [Version Name]. Open that app from your Applications folder to begin installing the operating system.
- macOS Sierra 10.12 can upgrade El Capitan, Yosemite, Mavericks, Mountain Lion, or Lion
- OS X El Capitan 10.11 can upgrade Yosemite, Mavericks, Mountain Lion, Lion, or Snow Leopard
- OS X Yosemite 10.10can upgrade Mavericks, Mountain Lion, Lion, or Snow Leopard