Ames6881 wrote:
I have not been able to complete a back up for a couple of weeks now. Keep getting this message...
'Files can’t be copied onto the backup disk because it is read-only. You may need to repair or erase the disk using Disk Utility. If the disk can’t be repaired, select a different disk for backups.'
I have been using the My Passport for 2 years and haven't had a problem. There is space so unsure why its not backing up.
Thanks
Drives can fail at anytime.
Time Machine has completed ... a new backup for you, or get a message saying it can't create the backup.
That message reappears it is likely the TM disk has been operating in a state of failure, and will continue to reappear with increasing frequency.
The solution is to replace it.
Learn more about backup disks that you can use with Time Machine —https://support.apple.com/kb/HT202784
If you need to create a new backup from Mac—
https://support.apple.com/guide/mac-help/if-you-need-to-create-a-new-backup-mh34042/10.14/mac/10.15
https://support.apple.com/guide/mac-help/time-machine-troubleshooting-mh15653/mac