questions about flash disks

hello bros.


I have some questions about usb flash disks

1- i have fixed "usb flash disk unallocated problem " (when a 16gb turns into 200mb).
my question is how to return it to 200mb .. i want to do this for education reasons.

2- i have a usb flash disk when i plug it , show me a message "usb not recognize" knowing i plugged it in a damage usb port in another pc ... how to fix this problem

3- i have an external hdd , it show me a message tell me should format it .
how to fix this problem without need to format it


thank you all

112 views . no answer !

I need answers please.

Your questions are confusing and not well-stated.

Can you rewrite your questions in a more understandable form?

Black Water said:

hello bros.


I have some questions about usb flash disks

1- i have fixed "usb flash disk unallocated problem " (when a 16gb turns into 200mb).
my question is how to return it to 200mb .. i want to do this for education reasons.

2- i have a usb flash disk when i plug it , show me a message "usb not recognize" knowing i plugged it in a damage usb port in another pc ... how to fix this problem

3- i have an external hdd , it show me a message tell me should format it .
how to fix this problem without need to format it


thank you all

Some of us may be goils.

1. Right-click Computer/My Computer/My PC/This PC and click Manage. In the Disk Management section see if the drive is listed. If so you may need to assign a drive letter to it so Windows Explorer can see it. If no partition you'll need to create one but be aware that any data on it will be destroyed. After creating a partition it usually starts the formatting.

2. The second computer's problems may have damaged the drive.

3. Pretty much the same answer as 1.