dctacsi Posted January 18, 2019 Share Posted January 18, 2019 Hi, I want to ask for help. On E7440 I wanted to create a plus FAT partition under Mojave by reducing the existing one, as shown in the attached image for Linux. Unfortunately, the partitioning process is interrupted by error code 49187. Someone might have a tip on how I could solve this problem? Thank you in advance for your answers! Link to comment Share on other sites More sharing options...
Administrators Bronxteck Posted January 18, 2019 Administrators Share Posted January 18, 2019 retry doing it using the recovery partition disk utility or the installer one. Link to comment Share on other sites More sharing options...
dctacsi Posted January 18, 2019 Author Share Posted January 18, 2019 Of course I have already tried installing the installer from USB via the installation interface, but I get the same error ... Link to comment Share on other sites More sharing options...
dctacsi Posted January 18, 2019 Author Share Posted January 18, 2019 Frankly, I do not know what to try. Link to comment Share on other sites More sharing options...
dctacsi Posted January 19, 2019 Author Share Posted January 19, 2019 I did exactly that (I tried with FAT, also with NTFS, exFAT or tried Boot Camp too), but unfortunately I did not get the 49187 error. Link to comment Share on other sites More sharing options...
dctacsi Posted January 21, 2019 Author Share Posted January 21, 2019 I managed to solve the problem. Error code 49187 appears to be an internal error in the structure of the APFS that occurred during the file system installation. I couldn't find a solution to fix it, so I could only recover the following steps: Step 1: I made a Time Machine backup (otherwise I just updated my existing one) Step 2: I restarted the computer and selected the installation option from the USB installer Step 3: I then run the following command in the terminal to list the disks: discussion list Step 4: I selected the disk on which the macOS is installed (in this case, this was "disk1") Step 5: Then I ran the following command (To convert an APFS container into a free space, you must first delete the container): diskut about deleteContainer disk1 Step 6: Then restore the system using Time Machine After restoring the system, I was able to partition without problems Link to comment Share on other sites More sharing options...
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