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I have a My passport for Mac, 2TB, that is used to back up my late 2013 27" iMac. as of about 12 days ago it just stopped backing up via time machine. The message says that it is now a read-only device. I have not changed any of the settings, so not sure what the issue is. anyone have this happen to them?
Don
Most likely, Time Machine decided that backup disk is no longer reliable. TM "locks" the last backup ensuring it remains intact.
Replace the drive. Then, at your option, either keep that older one on the shelf until you decide its backups are no longer required — or — erase and reformat it and continue to use it as a second, redundant TM backup disk. Often, hard disk drives will continue to work for months or years, but it will eventually fail again (as everything will). When those failures become intolerably frequent just throw it out.
+1 on replacing the drive. WD drives that include their enclosures tend to be a fairly low quality with sealed cases. The sealed cases are cheap to make but they do not allow for adequate cooling which in many cases leads to a premature failure.
What I and many other experienced users on these forums prefer is the OWC Mercury Elite Pro due to it's reasonable cost, high quality, great cooling and if the drive fails with a simple screwdriver you can replace the HD which takes less than 5 minutes even for someone unskilled.
my passport is not backing up my max
