Lacie is in disc utility and finder but time machine backup doesn't recognize it

Lacie is working fine on my Macbook Pro. It's recognized in disc utility and has plenty of space.


But when I try to run a time machine backup, it's not finding the LaCie.

MacBook Pro 16″, macOS 13.5

Posted on Nov 19, 2023 4:26 PM

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Posted on Nov 19, 2023 6:12 PM

aangel1 wrote:

ExFat

... and that would be the issue why Time Machine cannot backup to this drive. It would have to be either HFS+ or APFS to work.


Since you already have files on this drive, you have a few choices going forward. One of those is to create a separate partition, formatted in APFS, that will be dedicated for Time Machine. It should be 2-3x the capacity of your Mac's internal drive.


Second, you shouldn't use a single partition for both storing files and for Time Machine backups.

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Question marked as Top-ranking reply

Nov 19, 2023 6:12 PM in response to aangel1

aangel1 wrote:

ExFat

... and that would be the issue why Time Machine cannot backup to this drive. It would have to be either HFS+ or APFS to work.


Since you already have files on this drive, you have a few choices going forward. One of those is to create a separate partition, formatted in APFS, that will be dedicated for Time Machine. It should be 2-3x the capacity of your Mac's internal drive.


Second, you shouldn't use a single partition for both storing files and for Time Machine backups.

Nov 19, 2023 5:01 PM in response to Tesserax

ExFat

See screenshot below re partition.


Also, I contacted LaCie suppot (automated - they aren't in this evening). It sent me this link. I'm concenred if I download and save install what seems to be the Toolkit suggestion, I will mess up my LaCie. Since it has files on it I don't want to do something that could erase them, etc. https://www.seagate.com/support/software/toolkit/

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Lacie is in disc utility and finder but time machine backup doesn't recognize it

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