On Tue, Mar 6, 2018 at 3:04 AM, Russell Senior <[email protected]> wrote: > On Tue, Mar 6, 2018 at 3:01 AM, Jim Karlock <[email protected]> wrote: >> >>> My initial attempt to google this was unsuccessful (most people point >>> out the write protect tab, not my problem). >> >> >> Bad switch on the write protect tab? (The tab operates a tiny switch.) > > Nope. > > I can turn the switch to lock and it mounts the device read only very > clearly. The behavior I observe is that it happily writes /dev/zero > over the block device, but then when I read again, the old data is > still present.
For example, if I flip the tab to write protect tab to "Lock", I get this: # dd if=/dev/zero of=/dev/sdc status=progress bs=1M dd: failed to open '/dev/sdc': Read-only file system _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
