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An 8-year old bug discovered on macOS: File encryption failed

Because of Quick Look’s vulnerabilities, all encryptions on macOS exist in name only.

macOS has a very practical function, namely Quick Look. You select a file or an image, press the Space key, and you will be able to preview its details. This function, however, was been reported to have a bug due to some issues on preview repository, which has led to great possibility of leaking the user’s encrypted files.


Apple: It is easy to transfer iOS apps to macOS, but no merging

Federighi emphasizes that macOS will never merge with iOS, not even for a touch screen.

At WWDC a few days ago, Apple shared a tool for developers to efficiently transfer iOS apps to macOS, announcing the feature will be available for third-party developers by 2019. But we still have many doubts. Wired has published the interview of Craig Federighi, Apple’s software engineering supervisor, who gave specific answers about this transfer project.

Federighi expressed that this project was established two years ago mainly involved the update for UIkit, as Apple needed to make this iOS frame works for macOS. He also emphasized that it did not mean macOS would be able to run iOS App right after this, it is not automatic. Developers will need to do some extra programming.


How to install dual system and shared partitions on Mac?

by removeos_admin 0 Comments

Now there are many ways to install dual system and shared partitions on Mac, but some of them are not general enough or too complicated. A user, days ago, posted a general, simple way that doesn’t require you to reinstall macOS.

The user said this only applies to non fusion drive, otherwise just turn off the CoreStorage, which is a disk managing mode Apple designed for fusion drive.


Mac’s built-in “Terminal” “Boot Camp Assistant” and “Disk Utility”.


1. Turn off the CoreStorage.


Access Terminal, type in command “sudo diskutil CoreStorage revert /”, press Enter, provide password, and reboot the Mac.

2. Use Boot Camp to install Windows.

Access Boot Camp, select “Open Boot Camp help”, then follow the prompts including the steps below:

– Check for software update
– Get a Windows ISO
– Prepare for installing Windows
– Install Windows
– Install software supported by Windows

3. Use Disk Utility to create multi partitions.

– After the installatio of Windows, reboot the Mac, press Option key, and select Mac system to log in.
– Open Disk Utility, select the whole disk, and select “Partition”
– Select the “MacintoshHD” partition, press “+” to enlarge the space according to your needs, select the exfat format, which can be visited by both systems.
– Click Apply.

4. Reboot the Mac.

How to quickly finish updating macOS?

Isn’t it boring when updating macOS, all you can do is waiting and watching the progress bar? Lately a user posted on Reddit to share a Terminal command that can speed up macOS update.


The user said it usually takes half an hour to update macOS through the App Store. macOS now has a built-in utility that quickens the update, and users can use their devices while updating the system.

The user also said it only took him 10 minutes to finish updating to the latest version of macOS 12.6. The device needs to restart during the update, so you won’t be able to use your device for about 2 minutes.  The user suggested using the following commands for update:

softwareupdate -l 

softwareupdate -i -a

The first one is to check for updates, the second is to install the update. During the process you’ll be prompted to restart the device.

The post soon received replies – another user discovered a method with higher efficiency. This user said executing “sudo softwareupdate -ia;sudo reboot” command will automatically do the tasks one by one, so that during the update you can put the device aside and do other things.

Another method is to execute “sudo sh -c “softwareupdate -ia && sudo reboot” command. The device will restart after the first task is done, and you’ll be prompted if the device fails to restart.

The last but the better way is to execute “sudu sh -c “softwareupdate -ia && reboot” command.

Well, no matter which way you choose to update the device, backup is always suggested.

New macOS support device list: same as the last year

At Apple WWDC in 2017, the new macOS launched as expected, but it’s called macOS High Sierra, not the names of scenic spots in States as we guessed.


Just like the name indicates, its coming doesn’t exclude any type of Mac. In other words, as long as your Mac computer supports macOS Sierra, it can be updated to the this new version. Specific devices include:

  • MacBook (from 2009 and later)
  • iMac (from 2009 and later)
  • MacBook Air (from 2010 and later)
  • MacBook Pro (from 2010 and later)
  • Mac Mini (from 2010and later)
  • Mac Pro (from 2010 and later)

Starting from last year, macOS Sierra no longer supports Mac devices produced in 2007,  2008, and 2009. Apple said that Mac’s software update cycle will be closer to the hardware update cycle. So the launch of High Sierra doesn’t mean those old machines won’t be supported, which did surprise many users.

But since currently Mac hardware update frequency has been greatly lowered, many old type of machines still have their value. Although old devices will not support every feature of the new system, many users won’t be worried their devices may lose Apple’s support due to this update.

Beta 1 of macOS 10.12.6 released on Mac App Store


Apple has rolled out the first beta of macOS 10.12.6 for developer testing. This update is likely for bug fixing and security improvements.

Releases notes for the update can be seen by developers through the Mac App Store, but no specific focus areas are mentioned.

One day after the public release of macOS 10.12.5, which was previously only available for developers and public beta testers, the first beta of macOS 10.12.6 was released.

Now registered developers can download macOS 10.12.6; a public beta version may be released shortly.

We will update if any features are discovered in the new update.


Access NTFS read-write functions on macOS Sierra

This has been tested successfully on macOS Sierra. I put NTFS in another disk partition (also works for mobile HDD). There are many similar articles on the Internet, but none of them said the test was successful, probably because of different system versions. I couldn’t index NTFS disk, even after we tried to recreate system index, there were still missing files for unknown.

Return to the subject, here are the steps:

1. Open the Terminal, enter the following command to view disk information – your partitions under Name (Mine are C, D, E, F).

diskutil list


2. Check /etc/fstab files – fstab is a text file, which should be empty if it hasn’t been modified. This file is used to configure file system, and all your plug-in partitions must be in this file, otherwise they won’t be added the next time you start up. You’re suggested using Notepad to modify, just enter the this command:

sudo nano /etc/fstab

Then enter the system password (it will skip if no password has been set), you will see the file content.

3. Type the following commands. The “C, D, E ,F” represent my NTFS partitions, just replace them with your partition names, each line for one partition. Use \404 to replace blank space in your volume labels if there is any. When you finish typing in these commands, press ctrl + X, and the Notepad will ask you whether to save it. Chooose “yes” and exit.

LABEL=C none ntfs rw,auto,nobrowse

LABEL=D none ntfs rw,auto,nobrowse

LABEL=E none ntfs rw,auto,nobrowse

LABEL=F none ntfs rw,auto,nobrowse


4. Eject the mobile HDD/Plug in the computer, use an uninstall tool for removal, then successively add them in the disk utility.

5. Enter the following command to mount the disk volume lables (If you can’t perform this step, it may not be seen in Finder).

sudo In -s /Volumes ~/Desktop/Volumes

Steps to clear all user log files on Mac


The logging system of macOS is very elaborate that i can monitor and log various system level and app level functionality, including app crashes, problems, and internal errors with apps.

Here you can learn how to access the raw log files and clear these user level logs from your Mac. But this is aimed at advanced Mac users instead of the average or novice users.

To be perfectly clear, these logs are almost entirely crash and error logs for particular apps. Despite what some third-party utilities may claim, removing user level logs is not a necessary task and nor should this be encouraged.

How to clear user logs from macOS

You’re suggested backing up your Mac before doing this.

1. From the Mac finder, pull down the “Go” menu and select “Go to folder”

2. Enter the following directory path exactly, including the tilde:


3. Selectively choose the logs you want to inspect or delete, or alternatively you can select and trash them all


4. Empty the Trash

Please note that you may not restore any meaningful disk space by deleting log files, which may take up just a couple of megabytes or maybe even just kilobytes. And doing this will not speed up your Mac.

WikiLeaks: Apple macOS used by CIA

Previously WikiLeaks discovered that iOS vulnerabilities can be used by CIA for monitoring. WikiLeaks threatened Apple that if they doesn’t fix this problem, there will be consequences. Before any responses came from Apple, we learned new reveals already – according to WikiLeaks, not only iOS, but also macOS, which has the vulnerabilities that can be used by CIA.


Compared to iOS, macOS seems to be less risky though. WikiLeaks pointed out that CIA mainly uses Thunderbolt EFI vulnerabilities in Mac apps, and reboot won’t make them gone. WikiLeaks, however, also found out during tests that reinstalling the system will block the vulnerabilities, meaning hardware update will permanently fix them until the next infection.

When WikiLeaks newly exposed the problem, Apple has responded that more than 80% of the vulnerabilities were fixed through the latest update, and their engineers had been working on fixing the rest. For that, Julian Assange, founder of WikiLeaks, said they would like to work with Apple, providing information of the vulnerabilities they discover, so that Apple can resolve them with much higher efficiency.