How to delete an .iso file which was downloaded?

[dbd400@gmail.com]

The file resides on an NTFS windows directory. I am uncertain as to whether it had been downloaded using Windows, or Puppy, since I am using both. Firefox had been used either way as the download agent. Windows is W7, Puppy is slackware 5.5. I am superuser, and home directory is root.

Attempted to delete using 'rm'. Message read: "cannot remove, read only file system.'
Attempted to delete using 'rm -f'. Ditto.
The tried 'rm -fr' No luck.
Verified by 'ls -l', permissions were -r--------
Attempted to use 'chmod 777'. Message was: 'read only file system'.

Embarrassing and unsettling. With everyone working with .iso files, even though they are treated as file systems, there must be some simple way to delete them.

To compound the difficulty, the entries on the Internet mostly treat the search "How to remove .iso file from hard drive' and all similar searches as issues involving operating upon the .iso contents, not upon the .iso as a whole. I now know how to mount the .iso, though I haven't tried it. While I now, from the information I have, might mount and delete all interior files, that would leave the now-empty .iso still on my hard drive. It seems to boil down to how to remove the read-only attribute from a file-system.

Thanks for any light upon this.

[rjbrewer]

Drag it to trash.
Right click....delete.

[Makoto]

Run a scandisk/chkdsk on the NTFS drive from within Windows. As far as I'm aware, NTFS drives are usually mounted as read-only under Linux when the NTFS-handling routines believe there are problems/errors with the drive.

You can't delete the ISO file from within Windows, though?

[rjbrewer]

Have never had a problem running from Puppy (full install).
Mounting Win. partition.
Find the file; (usually in "downloads").
Follow my previous post.

[Pence]

Is there a way within the Firefox browser to remove/delete a download?