So i'm trying to erase the disk after making it to a bootable usb but now im getting this error "Couldn't open device" I've tried researching and tried every method but the usb won't erased.

I've tried first aiding it first and erase it and using other format i've tried using terminal to erase, got the same error every time.

So how can I erase /dev/disk2?

So I'm trying to erase the disk after making it to a bootable usb but now I’m getting this error "Couldn't open device". This happened before and after a reboot.

I've tried first aiding it first and erase it and using other format I've tried using terminal to erase, got the same error every time.

So how can I erase /dev/disk2?

So i'm trying to erase the disk after making it to a bootable usb but now im getting this error "Couldn't open device" I've tried researching and tried every method but the usb won't erased I've tried first aiding it first and erase it and using other format i've tried using terminal to erase it any idea? disk is /dev/disk2

So i'm trying to erase the disk after making it to a bootable usb but now im getting this error "Couldn't open device" I've tried researching and tried every method but the usb won't erased.

I've tried first aiding it first and erase it and using other format i've tried using terminal to erase, got the same error every time.

So how can I erase /dev/disk2?

So i'm trying to erase the disk after making it to a bootable usb but now im getting this error "Couldn't open device" I've tried researching and tried every method but the usb won't erased I've tried first aiding it first and erase it and using other format i've tried using terminal to erase it any idea?

So i'm trying to erase the disk after making it to a bootable usb but now im getting this error "Couldn't open device" I've tried researching and tried every method but the usb won't erased I've tried first aiding it first and erase it and using other format i've tried using terminal to erase it any idea? disk is /dev/disk2

diskutil list

/dev/disk0 (internal, physical):
    
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:      GUID_partition_scheme                        *121.3 GB   disk0
       1:                        EFI EFI                     209.7 MB   disk0s1
       2:                 Apple_APFS Container disk1         121.1 GB   disk0s2
    
    /dev/disk1 (synthesized):
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:      APFS Container Scheme -                      +121.1 GB   disk1
                                     Physical Store disk0s2
       1:                APFS Volume Macintosh HD            57.9 GB    disk1s1
       2:                APFS Volume Preboot                 44.7 MB    disk1s2
       3:                APFS Volume Recovery                512.4 MB   disk1s3
       4:                APFS Volume VM                      2.1 GB     disk1s4
    
    /dev/disk2 (external, physical):
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:                                                   *4.2 GB     disk2