Unable to format pendrive, diskutil error When I insert my USB Pendrive in my iMac i see this message:


I tried to format it both with DiskUtility and with diskutil command in terminal but I get this error:

iMac:~ User$ diskutil eraseVolume HFS+ PenDrive disk2
Started erase on disk2
Unmounting disk
Erasing
newfs_hfs: WriteBuffer:  pwrite(3, 0x108551000, 131072, 0): Device not configured
newfs_hfs: write (sector 0): Invalid argument
Mounting disk
Could not mount disk2 with name (null) after erase
Error: -69832: File system formatter failed


How can I solve it?
Click on "Initialize..."

or if the useer your login with can adminastrat the computer then try adding "sudo " and entering your password when prompted.

So:

sudo diskutil eraseVolume HFS+ PenDrive disk2