This prompt is coming up as I want to add a 5TB Seagate ONE TOUCH to back up my computer. Is this so Mac can format it to my files?
iMac 21.5″, macOS 10.13
Is this so Mac can format it to my files?
Yes. Most external drives are pre-formatted for Windows computers and although Macs can read and write to that format it is desirable to reformat an external drive to APFS.
This is described in the support document File system formats available in Disk Utility on Mac.
The erase and format process is described in Erase and reformat a storage device in Disk Utility on Mac.
Is this so Mac can format it to my files?
Yes. Most external drives are pre-formatted for Windows computers and although Macs can read and write to that format it is desirable to reformat an external drive to APFS.
This is described in the support document File system formats available in Disk Utility on Mac.
The erase and format process is described in Erase and reformat a storage device in Disk Utility on Mac.
Are you sure you want to erase the backup disk “One Touch”? Erasing will destroy all information on the disk and can’t be undone.The disk must be erased before it can be used for Time Machine backups because it has an incompatible file system.
