I used the answer to these questions to install Linux (I installed Mint, however, not Ubuntu) and followed.
I think I did not follow the answer correctly, since I still have an unused placeholder partition, but Linux is installed and works perfectly. I had to use the
diskutil resizevolume disk0s2 140G 3 jhfs + part1 800M jhfs + part2 200M jhfs + part3 200 I command differently than I am in High Sierra, and I have APFS containers. Di 4GB by Linux Swap
Linux Mint works perfectly, but when you try to start in Windows through the start menu option (at startup), the built-in startup manager crashes. If Windows is configured on the default boot drive, a blank screen appears.
The Bootcamp partition has almost no important information, I can format it / reinstall it if necessary.
The following is my
diskutil list exit. BaseQi is a 64GB SD card exFAT.
/ dev / disk0 (internal, physical): #: SIZE IDENTIFIER NAME TYPE 0: GUID_partition_scheme * 251.0 GB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_APFS Container disk1 120.0 GB disk0s2 3: Linux Swap 3.9 GB disk0s3 4: Linux Filesystem 64.1 GB disk0s4 5: Apple_HFS part3 200.0 MB disk0s5 6: Microsoft Basic Data BOOTCAMP 61.8 GB disk0s6 7: EFI NO NAME 500.2 MB disk0s7 / dev / disk1 (synthesized): #: SIZE IDENTIFIER NAME TYPE 0: APFS container schema - +120.0 GB disk1 Physical store disk0s2 1: APFS Volume macOS 15.4 GB disk1s1 2: APFS Volume Preboot 65.3 MB disk1s2 3: APFS Volume Recovery 1.0 GB disk1s3 4: APFS Volume VM 1.1 GB disk1s4 / dev / disk2 (internal, physical): #: SIZE IDENTIFIER NAME TYPE 0: FDisk_partition_scheme * 64.0 GB disk2 1: Windows_NTFS BaseQi 64.0 GB disk2s1