Yes, but if your school forces you to use Zoom for distance learning due to covid-19 there's not a lot else to do other than refuse to attend classes and flunk the semester! Students are caught between a rock and a hard place. I doubt the Chinese command and contol servers are interested in K thru 12 or university course content anyhow. Business usage might be different.
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macOS 10.15 Catalina on Unsupported Macs
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@hvds from your previous "Opencore menu picture" I notice that you don't have the experimental features, I guess because you used a multi-partition hfs+ so probably the main opencore config is the one internal that you installed earlier, if you want update that install also this: OpenCoreAPFSloaderupdate.app.zip
After you installed this, reboot, and if you test the UEFI shell, simply type "exit" to return to opencore, or hold power button for many seconds, but it's just for curiosity, they are not really needed. I also included a PassMark RAM memory test (with a nice UI from PassMark) but it's still an experimental feature.
After you installed this, reboot, and if you test the UEFI shell, simply type "exit" to return to opencore, or hold power button for many seconds, but it's just for curiosity, they are not really needed. I also included a PassMark RAM memory test (with a nice UI from PassMark) but it's still an experimental feature.
2011 iMac Graphics Card Upgrade
in the boot screen chose your Mac partition and hit CTRL+ENTER or in macOS under system settings > startvolume and chose macOS as default boot
forums.macrumors.com
The process is same. The patcher when launched downloads the catalina 10.15.4. Best is to select bootable drive, and install from patched bootable usb drive. There after install the post install patches.
Make sure your SIP is disabled. You can also watch dosdude1 video on youtube.👍
@jackluke When I start my iMac to go into Catalina OS I only get black screen however, when I press option key and then select Catalina HD I am able to login . How can this be corrected. I have upgraded metal GPU on my iMac 2011. This issue cropped up recently.
Re-select in Startup Disk preferences.
I did that but it on restart it doesnot take me to login screen. I have to use option key at boot.
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I did re select in preferences but no luck . I have to press the option key to login.
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I did re select in preferences but no luck . I have to press the option key to login.
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Have you tried OpenCore on external usb ? Does it showed its menu ?
1) Try to hold alt-option key and move with the arrows on your "Catalina HD", then hold CTRL key, a wheel under your HD is showed, keep holding CTRL and press enter key on your HD.
2) If also this doesn't work, try reset PRAM.
If also PRAM doesn't work, maybe you have a FileVault 2 enabled that should show its pre-login, but you see a black screen because you have a non-EFI Metal GPU. For this you could use a modified rEFInd version.
Ok will try and get back.
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Apparently my main HD which was a SSD has been giving errors and was the culprit for all the issue that cropped up. I finally made another SSD as my internal HDD with Catalina and booted straight up to the login screen with no issues.
Tks again @jackluke & @ASentientBot for your support.
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Apparently my main HD which was a SSD has been giving errors and was the culprit for all the issue that cropped up. I finally made another SSD as my internal HDD with Catalina and booted straight up to the login screen with no issues.
Tks again @jackluke & @ASentientBot for your support.
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thank you! Tried it but launching from the USB created with dosdude1 gives the error message "Damaged Catalina installation" and does not want to proceed. Tried to disable csrutil too. Anything else I should try?
I ran the updated OpenCoreAPFSloader and see the full boot menu now. Used both shells and memory test, all fine. Thanks!
The rest is just for information.
I'm also using a USB pen drive. Formatted it as FAT32 with disk utility, the ran USBOpenCoreAPFSloader on it. Afterwards it is HFS+.
I did not regenerate it on the multi-partition drive. Nevertheless, when selecting either of the external boot loaders (pen or multi-partition drive) I see the full boot menu. Infact the multi-partition one (maybe also the pen one) seems to inherit it from the internal EFI, as you suggested.
When using an external EFI and then booting it again from the menu, a more GUI-like menu is shown, but works much the same as the original one (the last photo is taken when the multi-partition drive was connected).
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Have you watched the installation video on youtube? It guides you step by step. If your USB is damaged they try another USB stick. Make sure its at least 32GB for safety though 16GB will also do. Then try again.
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Which option did you choose for the rEFInd main screen as per last image that you posted. Also when I press the option key I dont see any efi.boot
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I am updating my previous post: USB OpenCoreAPFSloader
For those who have a rEFInd screen (instead of OpenCore) you should use also this: OpenCoreAPFSloaderupdate.app.zip
to make properly OpenCore menu detection when you use either the internal or USB OpenCore external version.
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I did, no usb stick's are available.
I also moved parallels to trash and reinstalled it and it's the same.
As I said before, my usb display link dongle is recognised as well as my usb external hard drive...
Just the sticks aren't available
The funny thing is in the devices menu no usb stick are available , but in Linux they are shown in the desktop as soon as I attach them to computer (that "vazio" hd icon in linux mint desktop is a usb stick), in windows the won't appear at all
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Strange that you can't see the EFI boots with ALT/OPT on power-on. My machine got Dosdude's APFS ROM patch applied, I don't know if that can make a difference.
Anyway in the boot selector screen I can select the internal OpenCore EFI boot (2nd from left) or the external one. I made the internal one my default booting by holding CTRL when clicking the arrow.
When switching off and back on it shows very quickly the OpenCore textual menu. It doesn't include the pen drive with the external OpenCore EFI boot though it is plugged in.
When going again with ALT/OPT via the boot selector screen, then selecting the internal EFI boot, the textual menu comes up, now including also the pen drive.
When choosing to boot the external EFI boot now (number 4), then the graphical menu shows up (after an error message regarding repeated booting).
(MBP5,2 17" mid 2009, 2.8GHz T9600, 8GB, APFS ROM patch applied, Samsung SSD 860 EVO with APFS. Catalina 10.15.4)
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For me, holding CTRL in the boot selector when clicking the arrow under the (internal) EFI boot did the trick. Now the OpenCore textual menu comes up after power on.
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Hello, have you ever found a solution to your problem? I installed Catalina on my iMac 8,1 and experience the same issue unfortunately ...
I have fixed the OpenCoreAPFSloader for the Startup Disk prefpane, install this updated version on your external USB flash drive: USBOpenCoreAPFSloader.app.zip
Moreover it is detected also from a macOS Recovery or Installer environment as Startup Disk.
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For those who have a rEFInd screen (instead of OpenCore menu) you should use also this: OpenCoreAPFSloaderupdate.app.zip
to make properly OpenCore menu detection when you use either the internal or USB OpenCore external version.
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Quick question: If the OpenCoreAPFSloader is chosen as default in the Startup Disk prefpane, will the Opencore boot menu be visible with non-Metal GPUs?
Of course, it is especially for non-Metal GPUs (and non-APFS firmware mac), even if you picked as Startup Disk you can hold alt-option after power-on chime to show the apple bootloader, and hold CTRL key to select a different default volume, or after from desktop Startup Disk prefpane select any macOS.
Congratulations on your successful repair!
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Regenerated OpenCoreAPFSloader on my two external volumes. As you said, I can now select them, and reboot, from the startup disk prefpane. Thanks!
I'm now very well set for the next OTA to an external SSD, with both OpenCore booter (including LegacyUSB injection to prelinkedkernel) and bootable 1.4 patcher/installer (for the post-install patches) on one external drive.
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What problem are you having?
I have a 8,1 with 10.15.5 beta installed and I can adjust the screen brightness using the the keyboard keys aka f1 & f2
@jhowarth
So,
I think I have solved the problem of "waking up" on my MP 3.1 :
After removing the "Belkin" USB BT4 "Dongle", I replaced the old original stock BT module in the machine and switched the BT keyboard (Bleujour Wireless) for a wired Apple keyboard.
Everything is working perfectly now.
As I said, there are reasons that reason ignores !
Many thanks for your expertise,
Serviteur,
So,
I think I have solved the problem of "waking up" on my MP 3.1 :
After removing the "Belkin" USB BT4 "Dongle", I replaced the old original stock BT module in the machine and switched the BT keyboard (Bleujour Wireless) for a wired Apple keyboard.
Everything is working perfectly now.
As I said, there are reasons that reason ignores !
Many thanks for your expertise,
Serviteur,
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