cannot edit the portable backup drive after upgrading macOS to Catalina
Hi,
I was previously using macOS Mojave and High Sierra. I saved some files is a portable drive. Later on, I upgraded to macOS Catalina.
After upgrading, I no longer have write authority to that portable drive but can still access and read the files. The file system in the portable drive is NTFS.
How do I get back my write authority to the portable drive.
Thank you.
MacBook Pro 13″, macOS 10.15