![]() ![]() Thanks to AsentientBot for this newer more streamlined method. Main Page/Instructions: macOS High Sierra Patcher Tool for Unsupported Macs Nvidia GT 120 (from a Mac Pro) is installedĪutomatic tools that can be used to install macOS High Sierra onto an unsupported Mac. Xserve2,1 (Early 2008) - graphics are unaccelerated with the original ATI X1300 unless an upgraded graphics card e.g. MacBook5,2 (Early 2009 MacBook) - Screen brightness not controllable (buttons don't work either), volume buttons do not work, same trackpad detected as USB mouse issue IMac9,1 (Early 2009) - Missing Screen Brightness Controls (buttons don't work either) IMac7,1 (Mid 2007 W/BCM94360CAX and SSE4 supported T9300) - Screen brightness is controllable (NightShift works with modified ameworks) MacBook5,1 (13-inch Unibody Aluminum Late 2008) - No issues ![]() MacBookPro5,1 (15-inch Late 2008) - No issues MacBookPro5,3 (15-inch Mid 2009) - No issues MacBookPro5,4 (15-inch Mid 2009) - No issues MacBookPro5,5 (13-inch Mid 2009) - No issues Partition Map Type: GPT (GUID Partition Table) Media Name: Samsung SSD 860 EVO 1TB Media There are 6 sticks of RAM equally spaced, DDR3 1333, and 2 empty slots. Resolution: 1920 x 1080 (1080p FHD - Full High Definition)įramebuffer Depth: 30-Bit Color (ARGB2101010) Metal: Supported, feature set macOS GPUFamily2 v1 Serial Number (processor tray): J592902SZ1LUE Here is what I found from the System Profiler: Quit the installer to restart your computer and try again. ![]() The machine rebooted and had the message: macOS could not be installed on your computer.Īn error occurred while verifying firmware. The installation process continued about 2/3 of the progress bar. I had formatted the SSD as GUID Mac OS Extended (Journaled). When I booted the machine, after selecting the Install High Sierra USB, I chose the install macOS option. Those are 3.0 USB slots and evidently don't get checked on start up. The slots I was using on the back of the machine belong to an add on card. ![]() I put the Install High Sierra USB stick in the top slot on the front of the machine. Making progress and learning a lot but still need quite a bit of help. Right now, I am having significant issues with the Mojave operating system refusing to do anything with the High Sierra information. I've also thought about trying to make a bootable DVD disk. Should the stick go in one of the front slots, which have white plastic? If that is the case, then I need to find a USB 1.0 stick. So there should not be a compatibility issue. The USB slots on the back of the machine have blue plastic too. I put the startup disk in the first bay where the HDD was. When I attempt to boot from it - and pull out the main hard drive, leaving only the new and correctly formatted SSD, I get the start up chime, and that is it. When I put the USB stick in my Mac Pro (4,1 updated to 5,1) and attempt to work with it, the Mojave operating system tells me that whatever I am doing cannot be done since the operating system (High Sierra) is too old. I have not started the Install macOS option since the computer belongs to my wife. I have a splash screen that says: macOS Utilities: Restore from Time Machine Backup Install macOS Get Help Online Disk Utility. I put it in a MacBook Pro 17" which runs High Sierra and booted off it. Click to expand.The link appears to have worked. ![]()
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