sierra – Removes shadows displayed in frames when the Show Desktop command is invoked in macOS

On my MacBook Pro, when I use the keyboard shortcut command + F3 To display the desktop, the desktop is displayed, but with a shadow in the margin. When I click on it, the last opened app opens, as shown in the image:

Is there anyway to disable the shadow? I want that when I use it command + F3I should be able to open the desktop without this shadow in the edge.

high sierra – macOS – How do I remove the installer for the update at reboot time?

I have a problem with the security update 2019-004 10.13.6. When it was time to reboot to complete the update, the screen went blank and the mouse pointer moved to the upper left corner (I still could move it with the mouse). After a while, it was obviously deadlocked, and the only way out was to turn it off with the on / off switch.

I also tried to install it in safe mode, no luck. I also tried to restore the internet and the problem persisted.

Whether I try to restart or shut down, the same problem.

Certainly there is a problem with the program or script whose job it is to install the update. I have googled quite a bit and can not find where / what it is and how to remove it so it will not try to do it. If I can not find that, the only way to ever restart / shut down properly is possibly a clean install that I would rather not do (many things configured on this iMac …).

The machine is an iMac from mid-2011, is running on the High Sierra.

Any ideas?

Thanks a lot!

Reinstall MacOS (High Sierra) with Terminal

This could be an open question:

I would like to reinstall High Sierra's operating system but prevent the hard drive from being converted to APFS format. This would require the use of terminal when this section of the command is executed:

--converttoapfs NO

Added to the file location of the High Sierra installer.

I have software problems and would like to do a reinstall Command + R Boot. I upgraded to 13.6 without switching to APFS and I want to fix and reinstall this issue while keeping my hard drive in HFS +. I have some technical knowledge sufficient to solve most problems myself, but this is something I'd rather find out with more guidance and advice.

Which is the best way for me to do this?

  • High Sierra normal on the desktop and reinstall terminal?
  • Reinstallation under MacOS UEFI via terminal?
  • Another method that I did not think about / that I do not know

All answers and help would be very grateful.

Thanks, Meriones.

Upgrade – High Sierra 10.13.6 – Security update 2019-003 fails

My 15-inch MacBook Pro (Retina, mid-2012) is running slowly since I tried to install the High Sierra security update 2019-003 but did not install it. After investigating the issue, I noticed a series of reports indicating that the update failed for other users and quickly decided that it failed. I'll wait for Apple to release an "updated" update. However, since trying to install it, my computer is running so slowly that I can barely use it. It's like trying to get underwater. Something as simple as moving A document in another folder blocks the computer, as well as opening a Web site. I tried unsuccessfully to restart the computer and test the speed of my IP address. I know so well with my Mac that I know very little and are afraid to start opening folders and deleting things without advice from someone who knows what to do. Now that I've found out I'm a complete computer dodo, I hope not to embarrass myself further. History: I received an automatic update from the App Store that was restarting for security update 2019-003. However, when I clicked Reboot, my MacBook Pro turned into a black screen with only the cursor on it. The next morning, nothing happened and the only option I had was a hard shutdown and a reboot. When I saw that the upgrade was not installed, I continued after making room on my hard drive. After several failed attempts, I found that the update had failed other users under the same circumstances I encountered. My problem is that I do not know how to delete the part of the upgrade that is in place and ready for installation. I think my computer is running so slowly. I've searched many times and ways, but I can not find anything on how to remove what has been downloaded and what to do after the reboot. Does anyone know where to find it on my Mac and how to remove it from my life? The upgrade is obviously flawed and I just want it to be discarded from my computer. Every help is appreciated. Sincerely, Kathryn

lion – Mac boot partition FFFF (High Sierra)

I know that many people had similar problems, and I've tried to fix them with the answers I found, but without luck.

  • Device: iMac 27 "mid-2011
  • OS: Latest High Sierra (I think the recovery mode might be the Lion version?)

I have a Linux partition with High Sierra and use it without problems. Now I've also created a bootcamp partition and installed Windows 7. After that, I can not boot to Mac anymore and I see in recovery mode that the main partition type is now FFFFFF-FFFF …

The partitions in a nutshell are as follows:

  • High Sierra, ~ 850 GB
  • Linux, ~ 100 GB <- This can be deleted
  • Bootcamp, ~ 49 GB <- This can be deleted

What I have tried:

I did that gpt destroy disk0 and afterwards, all volumes returned

Get add -i 1 -b 40 -s 409600 -t C12A7328-F81F-11D2-BA4B-00A0C93EC93B

Get add -i 2 -b 40 -s 409600 -t 7C3457EF-toget11AA-AA11-00306543ECAC

and so on ..
then try to check the volumes with diskutil verityVolume disk0s2 I get
"Error Starting File System Check for disk0s2: Unknown File System (-69846)"

Now I have reached the point where I do not know what to do anymore.

Where I started:


gpt show-disk0-original

And where am I now:

last step

Enter image description here

  1. All I want is for MacOS to work in the simplest way with the data it contains and all other partitions are available.

  2. Or I want to know how to simply format the drive and remove all partitions so I can reinstall (Plan B).

All comments are welcome! Many Thanks!

mac appstore – macOS High Sierra can not be downloaded again

I installed MacOS High Sierra 10.13.6 (17G8023). The icon of the app "Installation of macOS High Sierra" is available in /Application:

ls -al / applications | grep macOS
drwxr-xr-x @ 4 Root wheel 136 June 8, 2018 Установка macOS High Sierra.appdownload

("Становка" means "installation" in my localized OS X version)

The app launch should download the installer as I expect. But it does not. On the other hand, "Installing macOS High Sierra" is not included in the list of my purchased apps in the App Store. I can see earlier versions in this list (OS X El Capitan, OS X Yosemite, etc.), but not macOS High Sierra and macOS Sierra.

I also tried to find "Installing macOS High Sierra" by searching the app store.

Both macOS High Sierra and macOS Sierra are not included in the results. Can you please tell us how to download the installation application for macOS High Sierra?

Firewall – Open port on macOS Sierra

I'm trying to set up an SSH tunnel on my Mac.

For this I have to open a port (let's say 5901). What I found online suggests modifying the file /etc/pf.conf and adding this line to the end of the file:

Pass proto-TCP from any to any port 5901

and restarting the service with this command:

sudo pfctl -f /etc/pf.conf

However, an error occurs:

pfctl: Using the -f option may cause the rules contained in it to be deleted
The main rule set added by the system at startup. See /etc/pf.conf for
more details. No ALTQ support in kernel ALTQ related functions

The firewall is active and Telnet reports the port as closed.

Any suggestions, what am I doing wrong?

Many Thanks

high sierra – How do I delete an 802.1x profile in OS 10.13 if profiles are not displayed in the system settings?

I'm trying to delete an 802.1X eduroam profile that appears in my network settings in OS 10.13.

The solutions I found online suggest that this can be done in the system settings in the profiles. However, there is no profile icon in my system settings. What should I do?

High Sierra – WDF VIOLATION blue screen after upgrading the iMac (21.5 inches, mid-2011) to the Windows Update of May 10, 2019 (1903)

I have upgraded from an earlier version of Windows 10 to the current version. The Windows 10 ISO file was downloaded from the official Microsoft Web site. After that, the Mac would get the following "Blue screen of death" Error message.

The Windows support software was downloaded using the BootCamp Wizard. I have confirmed that the files match the files that can be downloaded from Apple's Boot Camp Support Software 5.1.5621 website. I have Windows 10 installed to start the old BIOS.


Below is some information about my configuration.

iMac (21.5 inches, mid-2011)
High Sierra Version 10.13.6
BootCamp Version 5.1 (Build 5621)
Windows 10 May 2019 Update (1903) English edition.

I also tried to cleanly install Windows 10, which did not make any difference. The error has still occurred. How can I avoid this error message?