Unable to write to My Passport drive on MacBook M4

Dave Perkes wrote:

Yes it is.

You’ll either need to install add-on third-party file system software to access that Microsoft format, or offload the current contents to temporary storage elsewhere and reinitialize the My Passport storage as the Apple HFS+ or APFS formats, or less desirably reinitialize it as ExFAT, and then re-load the storage contents from temporary storage elsewhere.

Paragon offers NTFS file system tools.

Apple provides read-only access to NTFS.

If you need local file interchange with Microsoft Windows system, running a file server on Windows or on macOS avoids the need to swap any storage hardware around.

Dave Perkes wrote:

Yes it is.

That's why you cannot write to the drive. macOS can read NTFS disks but not write to them on its own. Always been that way.

You need an app like NTFS for Mac in order to write to an NTFS disk.

Unless there is a reason you *MUST* use NTFS, you should consider reformatting that drive as ExFAT, which is compatible with both Macs & PCs.

Or simply reformat the drive and start over with Fat32 or ExFAT if it needs to be compatible with PCs. You can do that for no co$t.

File system formats available in Disk Utility on Mac - Apple Support

Is the My Passport drive formatted as NTFS?