Format Toshiba hard drive for Mac

For Mac external, the usual choice is GPT/GUID partitioning with HFS+ Journaled, most likely. Not HFS+ case-sensitive. If you’re thinking of using that device with Time Machine, it must be HFS+ Journaled.

I wouldn't use the device on both Windows and Mac, as that means using an old and limited format (FAT32), or purchasing and using third-party NTFS support.

For sharing files... If the computers are local and connected to the same network, I’d enable file sharing services, rather than swapping that disk around.

is this a Toshiba external hard drive?

if so there is software included on the drive or download from toshiba.com

if you see the untitled disk on your desk top, select that and open disk utility to format the drive.

i have one that works reads and saves on the MacBook air and my Dell XPS

just select mac journal on the options.

good, im glad that your Toshiba drive works

i use the toshiba drive just to store and play movie, all 1TB worth of movies with both the macbook and dell xps

i don't think formatted the drive and know i never paid for any software to do so.

have fun!

And, make sure you erase that Toshiba drive first using disk utility. An external hard drive does not need any software on it to function. All it needs is to be formatted Mac OS Extended and GUID partition scheme as already mentioned.

Tried the drive on another system?

It or its cable may well be bad.

Within Disk Utility, select the option to show all devices.

See if that renders the storage visible.