I have a shared external HDD with my family and want to encrypt/secure my data. Now we already have a software that password protects the overall hard drive but once the HDD is accessed, all folders and files are viewable. I know the long route of 7zipping a folder and assigning a password but it takes a really long time to just zip a file, 150GB+ data can take almost 9-10 hours to just create a zip file not to mention deleting the files are the zip is created. Is there any way that can help me encrypt a folder on an already encrypted drive?
One possible solution is VeraCrypt. You can use file (or partition) which you can mount as disk drive. It is very secure and very stable software. And its free.
To add a bit more info: veracrypt is available for Windows, MacOS, Linux, FreeBSD, Raspberry Pi OS.
P.S. No affiliation with developers of this product.