Help with permanently deleting files?

Question

I have the following message when the eraser software finished permanently deleting unused area on my USB:

Files in F:\system volume information did not have its cluster tips erased because the following error 'F:\System volume information is denied'

My question is does this matter if it did not delete the system volume information? I want it wipe the USB 32GB clean with no chance of getting any files back.

Answer 1

You can simply format the USB instead of erasing.

Answer 2

You could choose to format the USB and then everything will be deleted.

Answer 3

What's its format type: FAT32 or NTFS?