Sandisk Portable SSD shows 2x usage / one-half capacity.

Hi Apple Support Community!

I purchased a SanDisk Extreme 1TB Portable SSD - ExFAT format - and synced my ~320gb ~/pictures folder to it. On a MacBook running 10.14.4. Both the Disk Utility and the "Get Info" window show the SSD with ~800gb utilized. Looking at the contents it is as expected with, in addition to misc. smaller items, an old IPhoto library (130gb) and my current Photos library (185gb) that in total are ~320gb.

See pics.

Does anyone have any ideas?

Thanks!

Mike

MacBook

Posted on Apr 20, 2019 8:10 AM

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3 replies

Apr 20, 2019 8:52 AM in response to mikevit

Not sure why it's doing that, but probably has something to do with the ExFat format and the Windows drivers on the disk since it came formatted that way.

I'd use Disk Utility to reformat the drive completely. If you need ExFat to share with Windows, that's fine. Otherwise, I'd format it Mac OSX Extended Journaled.

This will erase the drive, so if you need to, back up the info on it first.

mikevit Author

Level 1

13 points

Apr 22, 2019 7:51 AM in response to Glenn Leblanc

Thanks, Glen. The drive wouldn’t remount on either of my 2 macs, so I reformatted in exfat on a windows pc and then reformatted to OSX Extended on my Mac. So far so good.

Apr 22, 2019 8:34 AM in response to mikevit

Good.. If everything is showing fine, I'd leave it like that unless you need to share with a PC.

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Sandisk Portable SSD shows 2x usage / one-half capacity.