How do I write protected micro sd card without using software?

The point is that I don’t want to make it where the user can physically unlock it using that small switch. I want to be able to use a software to lock it.
Is there a program to make that possible?
Answer #1
I’m a bit confused…
In your title, it says that you don’t want to use software,
But then you say you do…
Answer #2
The way the sd card are designed can’t allow this. The switch is the only thing that can block read and write. The other solution is to put a block at system level, setting the permission of the sd to read only. This is a solution that depend on the system, so putting it in another PC will give the user full permission on it.
Answer #3
The way the sd card are designed can't allow this. The switch is the only thing that can block read and write. The other solution is to put a block at system level, setting the permission of the sd to read only. This is a solution that depend on the system, so putting it in another PC will give the user full permission on it.
Is there a way to make it where upon loading it into any computer it will prompt for a password where only I will know it? I’m fine it they can format the drive, but the point is to keep the contents inside of the card unknown. I just want basic protection, nothing to sophisticated because if someone wanted to, they could break it easily I’m sure.
Answer #4
I'm a bit confused...
In your title, it says that you don't want to use software,
But then you say you do...
Apologies, mind was a bit everywhere when I writing the title and post content.
Please do not double post, -
#3.7 I It is forbidden to double post on the board. It means that you are not allowed to reply twice in a row in any topic. Use the edit button when altering your reply if you're the last to post in the topic.
Answer #5
It doesn’t hurt to search..

USB Secure USB Secure Software helps you to password protect USB drive, thumb drive, memory stick, pen drive, jump drive, flash drive and external hard drive. It supports plug and play and runs automatically once a USB drive is plugged in, asking you the password for it. USB Secure is hassle free and it doesn’t need a rocket scientist to master.
Features and Benefits:
- Password Protection: USB Secure is a powerful tool to password protect USB drive and all other external portable media. No matter what type of external storage device you use, USB Secure password protects it within seconds.
- No Administrator Rights Required: USB Secure doesn’t install any kernel or filter drivers, and therefore doesn’t require any administrator rights to password protect USB drive and other portable media.
- Compatible Everywhere: The program works on all flavors of Windows i.e. Windows 2000/ Windows XP / Windows Vista / Windows 7.0. USB Secure works perfectly well on all external portable media like USB flash drives, Thumb Drives, Memory Sticks, Memory Cards, Pen Drives and Jump Drives.
- Autoplay Feature: Full plug and play is supported that lets you automatically protect USB drive and all such external storage devices currently plugged into your PC.
- Complete USB Security:Whatever information, files, folders and documents you put in your USB drive, USB Secure keeps them completely secured.
- Reliable and Independent: USB Secure lets you protect USB drive’s data by using several layers of patent pending protection methods. This makes its protection, PC and hardware independent.
- Peace of Mind: Total peace of mind from security leaks and privacy breaches. Never again fear of what’s happening to your device while it is lost.
- User Friendly Interface: USB Secure is easy to install, run and use. It doesn’t complicate its users with technical jargon common in other encryption programs.
- Ease of Use: A very easy to use program with user-friendly interface.
- Affordable Software: USB Secure is a new addition to our robust collection of affordable and reliable security applications. You need not to shed hundreds of dollars to protect USB drive!
Answer #6
In this case yes, you can encrypt the content of the card so that only with the decrypt key the can read the contents. This still grant them the ability to format it but unless they know the key they can’t access the contents.
Answer #7
You can also use bitlocker to-go. (pw protected)
This is a built-in windows feature.