I just installed updated software Sequoia 15.3.1 to my iMac. I have the Segate Plus Drive as my time machine backup. At the end of the software upgrade, the message came that I would need to reformat the Senate Plus Drive in order to record backups. To=day I have a message that the backup will only READ. How do I solve this issue?
[Re-Titled by Moderator]
iMac 24″, macOS 15.4
Your files have not been successfully backed up. The Seagate drive is read-only, so Time Machine cannot create new backups.
You can try the follow steps to see if works:
step 1: Open Disk Utility:
Go to Applications > Utilities > Disk Utility, or search "Disk Utility" with Command + Space.
step 2: (Optional) Backup Important Data:
If you have important old backups on the drive, manually copy them to another drive or your Mac before erasing.
step 3: Format the Seagate Drive:
In Disk Utility, select your Seagate Backup Plus Drive.
Click the "Erase" button at the top.
Set:
Name: (Any name, e.g., "Time Machine Backup")
Format: Choose APFS (recommended) or Mac OS Extended (Journaled).
Scheme: Choose GUID Partition Map.
Click Erase to reformat the drive.
step 4: Set Up Time Machine Again:
After formatting, go to System Settings > General > Time Machine.
Add your newly formatted Seagate drive as the backup disk and start backing up.
Your files have not been successfully backed up. The Seagate drive is read-only, so Time Machine cannot create new backups.
You can try the follow steps to see if works:
step 1: Open Disk Utility:
Go to Applications > Utilities > Disk Utility, or search "Disk Utility" with Command + Space.
step 2: (Optional) Backup Important Data:
If you have important old backups on the drive, manually copy them to another drive or your Mac before erasing.
step 3: Format the Seagate Drive:
In Disk Utility, select your Seagate Backup Plus Drive.
Click the "Erase" button at the top.
Set:
Name: (Any name, e.g., "Time Machine Backup")
Format: Choose APFS (recommended) or Mac OS Extended (Journaled).
Scheme: Choose GUID Partition Map.
Click Erase to reformat the drive.
step 4: Set Up Time Machine Again:
After formatting, go to System Settings > General > Time Machine.
Add your newly formatted Seagate drive as the backup disk and start backing up.
hockey2014 wrote:
I get this message just now: Time Machine couldn’t complete the backup to “Seagate Backup Plus Drive”
Files can’t be copied onto the backup disk because it is read-only.
So are my files backed up ?
If the Drive has been formatted to a Microsoft Windows format >> NTFS Format <<
That would explain why nothing can be Written to the drive
macOS can Read from NTFS Drive but Can Not Write to that drive
Erase and reformat a storage device in Disk Utility on Mac
File system formats available in Disk Utility on Mac
Choose APFS / GUID Partition Map
Nothing to fix
Time Machine Backup Utility will mark the drive as Read Only
Though, only TM Backup can write TM Backup Snapshot to that drive
Connect a storage device to your Mac
Connect an external storage device, such as a USB drive or Thunderbolt drive, to the appropriate port on your Mac. Identify the ports on your Mac.
thank you for responding I am relieved of concern
You are welcome
I get this message just now: Time Machine couldn’t complete the backup to “Seagate Backup Plus Drive”
Files can’t be copied onto the backup disk because it is read-only.
So are my files backed up ?
Understand, Reformatting the Entire Drive, External
Anything that is on the external now will be lost forever
Thank you very helpful
You are welcome
How do I reformat my Seagate Plus drive on iMac?
