"The disk is write protected" when formatting

Scenario: I recieved a Dell OS USB stick 2 years ago for Windows 7.  Of course the USB stick is allocated into 2 different sectors.  I have volume f and volume g from this usb stick.  I was able to format the volume f, but when i format the volume g it says "The disk is write protected". Within the USB stick g lists "PRELOAD (a folder with 6 DAT, CRC, WIM, and DRVS files) ", "MASTER (a file in notpad format)", " and "Windows 7 SP1 x64 Ultimate RTM Dell.md5 (md5 file obviously)".  The only files that are still "read only" is just the "PRELOAD" folder, the files in the PRELOAD folder are all unchecked. The only thing i could find is that when i go into the properties and the security tab, (there is only 1 gourp or user name and that is set for Everyone) there is a "Special Permissions" that i cannot check allow or deny, but i can change all the other ones (modify, read, write...) I have done everything as listed below.

---Checked for external protection switch:Does not have one

---Tried different format types "Fat 32, NTFS, and exFAT": Still shows "The disk is write protected"

---Files within the USB stick do not show a delete option

---u should remove it as below:
1 Pull the USB flash drive out of your computer's USB port. Check the bottom end and sides of the drive to see if it has a write protection switch. Push the plastic switch into the "Unlock" position.
2 Insert the USB flash drive back into the USB port. Close the pop-up window that appears and navigate to the Start menu. Select "My Computer."
3 Locate the drive letter that corresponds to your USB flash drive in the "My Computer" window, such as "F:\" or "D:\." Double-click the drive letter. Attempt to use one of the files on the drive. Right-click one of the files if you still receive a write protection error and select "Properties."
4 Navigate to the "General" tab and remove the check mark from the box labeled "Read-Only." Click "Apply" and then attempt to use the file.
5 Return to the Start menu and click "Run." Type "Regedit" and press "Enter." Navigate to the registry folder "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies."
6 Check if there is an entry at the right side of the window labeled "Write Protect". If the entry is not there Right-click inside the window and choose "New D Word." Type "Write Protect" and press "Enter."
7 Double-click the "Write Protect" entry. Check that the value listed in the text box is "0." If it is not, delete the value and replace it with "0."
8 Close the registry editor and attempt to use any of the files on the USB drive. Return to the "My Computer" window if you continue to receive a write protection error message.
9 Right-click the drive letter for the USB flash drive and choose "Format." Click the drop-down menu named "File System" and select"Fat32."
10 Click "Start" to format the USB flash drive and remove the write-protection feature.