Seagate External Drive

Bob_O_link wrote:

How do I reformat the drive? This drive worked fine on my older MacBook computer.

Thanks for your help.

It likely worked on your older computer because you installed a third party app to interface with the ntfs formatted drive. Use Disk Utility to format the external drive. Again, when you format the drive all existing data on the drive will be gone.

For about $20 Paragon software has a utility that allows Mac to read and write to NTFS drives. I think Microsoft owns it now. Is it possible that you had this on your older MacBook?

https://www.paragon-software.com/us/home/ntfs-mac/

To reformat a drive on Mac, you'll use the Disk Utility app.

Erase and reformat a storage device in Disk Utility on Mac - Apple Support

Bob_O_link wrote:

I can not transfer files to my Seagate external drive. Format: Windows NT File System (NTFS)

Format the external drive for your Mac. Warning: when you format the drive all data on the drive will be lost so copy off the data before formatting.

As far as I know, Macs cannot write to the NTFS format - see here:

How to read and write NTFS for Mac? - Apple Community