How to install MacOS High Sierra on an older Mac
How to install MacOS High Sierra on an older Mac
Think your pre-2009 Mac is too old to run macOS High Sierra? Think again! Here's how to install macOS High Sierra on older Macs, using the macOS High Sierra Patch Tool
Specifically, this hack works on Macs with Penryn architecture: early-2008 or newer Mac Pro, iMac, or MacBook Pro (MacPro 3,1 and 4,1, iMac 8,1 and 9,1, MacBook Pro 4,1, 5,1 5,2, 5,3, 5,4, and 5,5); late-2008 or newer MacBook Air or aluminium unibody MacBook (MacBookAir 2,1, MacBook 5,1); early-2009 or newer Mac Mini or white MacBook (Macmini 3,1, MacBook 5,2); or early-2008 or newer Xserve (Xserve 2,1).
DOSDude1, who wrote the patch for this hack, stresses that the following Macs are not compatible: 2006-2007 Mac Pros, iMacs, MacBook Pros and Mac Minis (MacPro 1,1 and 2,1, iMac 4,1, 5,1, 5,2, 6,1 and 7,1, MacBook Pro 1,1, 2,1, and 3,1, Macmini 1,1 and 2,1), although the 2007 iMac 7,1 is compatible if the CPU is upgraded to a Penryn-based Core 2 Duo, such as a T9300; 2006-2008 MacBooks (MacBook 1,1, 2,1 3,1 and 4,1); and 2008 MacBook Air (MacBookAir 1,1).
Other than one of the Penryn Macs listed above, you'll need the macOS High Sierra Patch Tool, a copy of macOS High Sierra and a USB drive with a capacity of at least 8GB.
The macOS Sierra Patch Tool is available from dosdude1.com, and is free to download - but if you find the tool useful we would encourage you to donate to the developer.
STEP BY STEP
1 First of all you need to format your USB drive as Mac OS Extended (Journaled) using Disk Utility.
2 Open the macOS High Sierra Patch Tool, navigate to the High Sierra Installer App, select your USB drive and hit Start Operation. Boot from the USB drive.
3 If you want to do a clean install, you'll need to open Disk Utility again when the installer boots, then erase the disk or partition you want to put High Sierra on - this time you have the choice of using Mac OS Extended (Journaled), or the new APFS filesystem type. (You shoudl only use APFS if your target drive is a SSD, plus if you use APFS you will not have a bootable Recovery partition - there is more detail about this on DOSDude1's page).
4 Install macOS normally, then reboot back on to the installer drive. This time, open the macOS Post Install application and select the correct model of Mac. Select the appropriate volume and choose Patch, then Reboot when it's finished.
5 When it reboots, your Mac should now boot into a fully working copy of macOS High Sierra.
macOS High Sierra Patcher Tool for Unsupported Macs
Requirements:
- Early-2008 or newer Mac Pro, iMac, or MacBook Pro (MacPro 3,1 and 4,1, iMac 8,1 and 9,1, MacBook Pro 4,1, 5,1 5,2, 5,3, 5,4, and 5,5)
- Late-2008 or newer MacBook Air or Aluminum Unibody MacBook (MacBookAir 2,1, MacBook 5,1)
- Early-2009 or newer Mac Mini or white MacBook (Macmini 3,1, MacBook 5,2)
- Early-2008 or newer Xserve (Xserve 2,1, Xserve 3,1)
Machines that ARE NOT supported:
- 2006-2007 Mac Pros, iMacs, MacBook Pros, and Mac Minis (MacPro 1,1 and 2,1, iMac 4,1, 5,1, 5,2, 6,1 and 7,1, MacBook Pro 1,1, 2,1, and 3,1, Macmini 1,1 and 2,1)
-- The 2007 iMac 7,1 is compatible if the CPU is upgraded to a Penryn-based Core 2 Duo, such as a T9300.
- 2006-2008 MacBooks (MacBook 1,1, 2,1 3,1 and 4,1)
- 2008 MacBook Air (MacBookAir 1,1)
-- Note: Make sure SIP is disabled on the system you intend to install High Sierra on. If it's not or you're unsure, just boot into your Recovery partition of your currently installed copy of OS X, open Terminal, and run "csrutil disable".
Things you'll need:
- A copy of the macOS High Sierra Installer App. This can be obtained from the Mac App Store using a machine that supports High Sierra, or by using the built-in downloading feature of the tool. In the Menu Bar, simply select "Tools > Download macOS High Sierra..."
- A USB drive that's at least 8 GB in size
- A copy of the tool - Download here (Current version: 2.6.2, SHA1: d717ca2bd7c5a162788af244e59205ed0ca58af5)
-- View changelog and download older versions here
Known issues:
- Unsupported WiFi modules in some systems. Macs that use the Broadcom BCM4321 WiFi module will not have functional WiFi when running High Sierra. A fix for this is to open up your machine and install a compatible WiFi card. Machines affected include some MacPro3,1, MacBook5,2, MacBookPro4,1, iMac8,1, Macmini3,1, and MacBookAir2,1 systems. Please note that not all these machines will have an unsupported card, this is just a list of machines known to have shipped with that card in some configurations.
-- You can find out whether or not you have an unsupported card by opening System Profiler (About this Mac>System Report...), and clicking on WiFi under the Network section. Take note of the value listed for "Card Type".
IDs that DO NOT work under High Sierra:
- (0x14E4, 0x8C)
- (0x14E4, 0x9D)
- (0x14E4, 0x87)
- (0x14E4, 0x88)
- (0x14E4, 0x8B)
- (0x14E4, 0x89)
- (0x14E4, 0x90)
Any ID not listed, such as (0x14E4, 0x8D), is a supported card, and will work perfectly fine under High Sierra.
- Trackpad (MacBook5,2 affected only). The trackpad in the MacBook5,2 isn't fully supported in High Sierra. While it works and is fully usable, High Sierra detects it as just a standard mouse, preventing you from changing some trackpad-oriented settings.
How to use:
1. Insert your desired USB drive, open Disk Utility, and format it as OS X Extended (Journaled).
2. Open the "macOS High Sierra Patcher" tool, and browse for your copy of the macOS High Sierra Installer App.
*Ensure that the tool successfully verifies the app.
3. Next, select your USB drive in the Target Volume list, and click "Start Operation."
4. When the operation completes, boot your target unsupported Mac off the USB drive you just created by holding down the Option key while turning on the machine, and selecting the drive.
Note: Only perform steps 5 and 6 if you intend to do a clean install. Otherwise, you can simply skip these steps and install to your volume containg a previous version of OS X, and it'll do an in-place upgrade.
5. When the installer boots, open Disk Utility from the Utilities menu, or by double-clicking it in the Utilities window on the bottom left corner of the screen.
6. Select the disk or partition you want to install on, and erase it, ensuring to use either Mac OS Extended (Journaled), or APFS as the filesystem type. If formatting an entire drive, ensure GUID is selected.
-- Please note that if you use APFS, you will not have a bootable Recovery partition.
-- It is recommended that you only use APFS if the target drive is an SSD.
-- If you decide to use APFS, a custom booting method will be installed by the post-install tool, as the firmware of these unsupported machines does not natively support booting from APFS volumes. It is not quite as clean as native booting, but will not cause any issues while running High Sierra. A demo of the modified booting process can be viewed here.
7. Install macOS normally onto the desired volume.
8. When the install completes, reboot back onto the installer drive. This time, open the "macOS Post Install" application.
9. In the application, select the Mac model you are using. The optimal patches will be selected for you based on the model you select. You can also select other patches of your choosing.
-- The "i" button next to each patch will show more details about the respective patch.
10. Select the volume you have just installed macOS High Sierra on, and click "Patch." When it finishes patching, click "Reboot". It may sit there for a few moments rebuilding caches before rebooting.
-- If for some reason the system fails to work correctly after rebooting, boot back into your installer drive, run the post install patch again, and select "Force Cache Rebuild" before rebooting. This isn't necessary under most circumstances.
11. When it reboots, it should now boot into a fully working copy of macOS High Sierra.
Additional Info:
- If selected in the macOS Post Install tool, your High Sierra install will have a program named "Patch Updater" located in your /Applications/Utilities folder. This program will alert you when new updates to patches are available for your machine, and will prompt you to install them. If you do not have Patch Updater installed, but would like it, you can download and run the script found here to do so.
Updates
System updates, such as 10.13.1, should install normally if "Software Update Patch" was selected in the macOS Post Install tool, or installed using the Patch Updater program. If for some reason updates aren't showing up, or you did not apply the patch, you can install it manually using the script found here.
-- If the machine does not start up properly after applying a system update, you will need to boot off your patched installer volume, and re-run the post-install patch on your High Sierra volume. Ensure you select "Force Cache Rebuild" before rebooting.
Thanks to www.macworld.co.uk and dosdude1.com
Think your pre-2009 Mac is too old to run macOS High Sierra? Think again! Here's how to install macOS High Sierra on older Macs, using the macOS High Sierra Patch Tool
Specifically, this hack works on Macs with Penryn architecture: early-2008 or newer Mac Pro, iMac, or MacBook Pro (MacPro 3,1 and 4,1, iMac 8,1 and 9,1, MacBook Pro 4,1, 5,1 5,2, 5,3, 5,4, and 5,5); late-2008 or newer MacBook Air or aluminium unibody MacBook (MacBookAir 2,1, MacBook 5,1); early-2009 or newer Mac Mini or white MacBook (Macmini 3,1, MacBook 5,2); or early-2008 or newer Xserve (Xserve 2,1).
DOSDude1, who wrote the patch for this hack, stresses that the following Macs are not compatible: 2006-2007 Mac Pros, iMacs, MacBook Pros and Mac Minis (MacPro 1,1 and 2,1, iMac 4,1, 5,1, 5,2, 6,1 and 7,1, MacBook Pro 1,1, 2,1, and 3,1, Macmini 1,1 and 2,1), although the 2007 iMac 7,1 is compatible if the CPU is upgraded to a Penryn-based Core 2 Duo, such as a T9300; 2006-2008 MacBooks (MacBook 1,1, 2,1 3,1 and 4,1); and 2008 MacBook Air (MacBookAir 1,1).
Other than one of the Penryn Macs listed above, you'll need the macOS High Sierra Patch Tool, a copy of macOS High Sierra and a USB drive with a capacity of at least 8GB.
The macOS Sierra Patch Tool is available from dosdude1.com, and is free to download - but if you find the tool useful we would encourage you to donate to the developer.
STEP BY STEP
1 First of all you need to format your USB drive as Mac OS Extended (Journaled) using Disk Utility.
2 Open the macOS High Sierra Patch Tool, navigate to the High Sierra Installer App, select your USB drive and hit Start Operation. Boot from the USB drive.
3 If you want to do a clean install, you'll need to open Disk Utility again when the installer boots, then erase the disk or partition you want to put High Sierra on - this time you have the choice of using Mac OS Extended (Journaled), or the new APFS filesystem type. (You shoudl only use APFS if your target drive is a SSD, plus if you use APFS you will not have a bootable Recovery partition - there is more detail about this on DOSDude1's page).
4 Install macOS normally, then reboot back on to the installer drive. This time, open the macOS Post Install application and select the correct model of Mac. Select the appropriate volume and choose Patch, then Reboot when it's finished.
5 When it reboots, your Mac should now boot into a fully working copy of macOS High Sierra.
macOS High Sierra Patcher Tool for Unsupported Macs
Requirements:
- Early-2008 or newer Mac Pro, iMac, or MacBook Pro (MacPro 3,1 and 4,1, iMac 8,1 and 9,1, MacBook Pro 4,1, 5,1 5,2, 5,3, 5,4, and 5,5)
- Late-2008 or newer MacBook Air or Aluminum Unibody MacBook (MacBookAir 2,1, MacBook 5,1)
- Early-2009 or newer Mac Mini or white MacBook (Macmini 3,1, MacBook 5,2)
- Early-2008 or newer Xserve (Xserve 2,1, Xserve 3,1)
Machines that ARE NOT supported:
- 2006-2007 Mac Pros, iMacs, MacBook Pros, and Mac Minis (MacPro 1,1 and 2,1, iMac 4,1, 5,1, 5,2, 6,1 and 7,1, MacBook Pro 1,1, 2,1, and 3,1, Macmini 1,1 and 2,1)
-- The 2007 iMac 7,1 is compatible if the CPU is upgraded to a Penryn-based Core 2 Duo, such as a T9300.
- 2006-2008 MacBooks (MacBook 1,1, 2,1 3,1 and 4,1)
- 2008 MacBook Air (MacBookAir 1,1)
-- Note: Make sure SIP is disabled on the system you intend to install High Sierra on. If it's not or you're unsure, just boot into your Recovery partition of your currently installed copy of OS X, open Terminal, and run "csrutil disable".
Things you'll need:
- A copy of the macOS High Sierra Installer App. This can be obtained from the Mac App Store using a machine that supports High Sierra, or by using the built-in downloading feature of the tool. In the Menu Bar, simply select "Tools > Download macOS High Sierra..."
- A USB drive that's at least 8 GB in size
- A copy of the tool - Download here (Current version: 2.6.2, SHA1: d717ca2bd7c5a162788af244e59205ed0ca58af5)
-- View changelog and download older versions here
Known issues:
- Unsupported WiFi modules in some systems. Macs that use the Broadcom BCM4321 WiFi module will not have functional WiFi when running High Sierra. A fix for this is to open up your machine and install a compatible WiFi card. Machines affected include some MacPro3,1, MacBook5,2, MacBookPro4,1, iMac8,1, Macmini3,1, and MacBookAir2,1 systems. Please note that not all these machines will have an unsupported card, this is just a list of machines known to have shipped with that card in some configurations.
-- You can find out whether or not you have an unsupported card by opening System Profiler (About this Mac>System Report...), and clicking on WiFi under the Network section. Take note of the value listed for "Card Type".
IDs that DO NOT work under High Sierra:
- (0x14E4, 0x8C)
- (0x14E4, 0x9D)
- (0x14E4, 0x87)
- (0x14E4, 0x88)
- (0x14E4, 0x8B)
- (0x14E4, 0x89)
- (0x14E4, 0x90)
Any ID not listed, such as (0x14E4, 0x8D), is a supported card, and will work perfectly fine under High Sierra.
- Trackpad (MacBook5,2 affected only). The trackpad in the MacBook5,2 isn't fully supported in High Sierra. While it works and is fully usable, High Sierra detects it as just a standard mouse, preventing you from changing some trackpad-oriented settings.
How to use:
1. Insert your desired USB drive, open Disk Utility, and format it as OS X Extended (Journaled).
2. Open the "macOS High Sierra Patcher" tool, and browse for your copy of the macOS High Sierra Installer App.
*Ensure that the tool successfully verifies the app.
3. Next, select your USB drive in the Target Volume list, and click "Start Operation."
4. When the operation completes, boot your target unsupported Mac off the USB drive you just created by holding down the Option key while turning on the machine, and selecting the drive.
Note: Only perform steps 5 and 6 if you intend to do a clean install. Otherwise, you can simply skip these steps and install to your volume containg a previous version of OS X, and it'll do an in-place upgrade.
5. When the installer boots, open Disk Utility from the Utilities menu, or by double-clicking it in the Utilities window on the bottom left corner of the screen.
6. Select the disk or partition you want to install on, and erase it, ensuring to use either Mac OS Extended (Journaled), or APFS as the filesystem type. If formatting an entire drive, ensure GUID is selected.
-- Please note that if you use APFS, you will not have a bootable Recovery partition.
-- It is recommended that you only use APFS if the target drive is an SSD.
-- If you decide to use APFS, a custom booting method will be installed by the post-install tool, as the firmware of these unsupported machines does not natively support booting from APFS volumes. It is not quite as clean as native booting, but will not cause any issues while running High Sierra. A demo of the modified booting process can be viewed here.
7. Install macOS normally onto the desired volume.
8. When the install completes, reboot back onto the installer drive. This time, open the "macOS Post Install" application.
9. In the application, select the Mac model you are using. The optimal patches will be selected for you based on the model you select. You can also select other patches of your choosing.
-- The "i" button next to each patch will show more details about the respective patch.
10. Select the volume you have just installed macOS High Sierra on, and click "Patch." When it finishes patching, click "Reboot". It may sit there for a few moments rebuilding caches before rebooting.
-- If for some reason the system fails to work correctly after rebooting, boot back into your installer drive, run the post install patch again, and select "Force Cache Rebuild" before rebooting. This isn't necessary under most circumstances.
11. When it reboots, it should now boot into a fully working copy of macOS High Sierra.
Additional Info:
- If selected in the macOS Post Install tool, your High Sierra install will have a program named "Patch Updater" located in your /Applications/Utilities folder. This program will alert you when new updates to patches are available for your machine, and will prompt you to install them. If you do not have Patch Updater installed, but would like it, you can download and run the script found here to do so.
Updates
System updates, such as 10.13.1, should install normally if "Software Update Patch" was selected in the macOS Post Install tool, or installed using the Patch Updater program. If for some reason updates aren't showing up, or you did not apply the patch, you can install it manually using the script found here.
-- If the machine does not start up properly after applying a system update, you will need to boot off your patched installer volume, and re-run the post-install patch on your High Sierra volume. Ensure you select "Force Cache Rebuild" before rebooting.
Thanks to www.macworld.co.uk and dosdude1.com
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