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Sorry if this is not the correct forum, but??
I have been looking through some of the SD cards and found one with the instal for El Capitan on it. I opened the Disk Utilities application and tried to erase it and it fails with 'the erase process has failed. Click 'done'. Then I tried to use Finder to put it in the Trash and after trying to earse it it has now vanished from the Finder listing? I can take the card out and there is no warning that I haven't ejected it.
I then replace it and it once more shows on the Finder kisting. Then when I tried to drag the contents to the Trash it tells me that it can't be moved to Trash because it can't be deleted.
As I am now on High Sierra there is o way I'm going back so I want this card. Has anyone any idea just how I can erase this please?
I have been looking through some of the SD cards and found one with the instal for El Capitan on it. I opened the Disk Utilities application and tried to erase it and it fails with 'the erase process has failed. Click 'done'. Then I tried to use Finder to put it in the Trash and after trying to earse it it has now vanished from the Finder listing? I can take the card out and there is no warning that I haven't ejected it.
I then replace it and it once more shows on the Finder kisting. Then when I tried to drag the contents to the Trash it tells me that it can't be moved to Trash because it can't be deleted.
As I am now on High Sierra there is o way I'm going back so I want this card. Has anyone any idea just how I can erase this please?