Use of LaCie SSD for backup to Time Machine

Sequoia update seems making inoperable the Seagate "Toolkit.app" that opens the LaCie SSD used to backup to Time Machine. The "Unlock app" goes into an endless attempt to unlock, causing panic attacks, lock icons threading thru the menu, virtually unstoppable, memory hogging, etc., etc.


1) Any similar behavior observed? 2) any knowledge of Seagate and Apple working on their pieces communicating? (Seagate does not admit, btw. Yesterday call had me changing the cord to the Imac and the SSD changed, as a possibility of the problem - go figure!). Direct Finder app attempt at opening the SSD resulted in the behavior.

Responses and comments, guidance, welcomed!

iMac 21.5″, macOS 15.6

Posted on Aug 28, 2025 08:49 AM

Reply
20 replies

Aug 28, 2025 10:31 AM in response to Joseo

Joseo wrote:

Thank you, John.
But know that I have been using LaCie SSDs for years, this one from 2022, September. So, you are right - there was a bundled protection in it: an app to open it upon starting or reconnecting it. And of course, I had to format it as instructed before using it.
To me, that app is not 'working' with Sequoia, and upon attempting to open the SSD with Finder, the bundled protection attempts to start but gets wound up in the effort, unable to open the SSD.
Hope that adds information to the theme.
Thanks again,

If you are relying on 3rd party software to handle mounting and/or encryption of an external drive, it is up to the developer of that software (who in this case is also the hardware manufacturer) to update that software so it works on current versions of macOS.


Contact Seagate and ask that they update the app for compatibility.


Once you regain access to your drive, I strongly recommend that you follow the instructions from John Galt – remove your data from that drive (copy to your internal or another external drive), completely erase and reformat the drive (top level) using Disk Utility (GUID scheme, APFS format with encryption if you want it), then restore your data to the drive.

Aug 29, 2025 08:33 AM in response to Joseo

Joseo wrote:

HWTech,
i have a SID and. PSID.But how do I ‘contact’ the SSD If upon attempting to open it it goes haywire? That is how do I do what you describe : “that software (or any other third party software with the ability to issue a PSID reset) can be used to reset the SSD's encryption keys”? Thank you!

I did mention that you may need to use another computer, even a Windows computer. Or some other software that has the ability to utilize the PSID code to reset the SSD (it is an industry standard, not just for Lacie/Seagate drives).


Unfortunately I did forget to mention previously that you should check with Lacie for an updated version of the software which I see was the actual solution here.


Aug 28, 2025 09:28 AM in response to John Galt

Thank you, John.

But know that I have been using LaCie SSDs for years, this one from 2022, September. So, you are right - there was a bundled protection in it: an app to open it upon starting or reconnecting it. And of course, I had to format it as instructed before using it.

To me, that app is not 'working' with Sequoia, and upon attempting to open the SSD with Finder, the bundled protection attempts to start but gets wound up in the effort, unable to open the SSD.

Hope that adds information to the theme.

Thanks again,

Aug 28, 2025 11:07 AM in response to Joseo

Joseo wrote:

To me, that app is not 'working' with Sequoia, and upon attempting to open the SSD with Finder, the bundled protection attempts to start but gets wound up in the effort, unable to open the SSD.
Hope that adds information to the theme.


Yes it does. The first order of business is to uninstall that app. Refer to its instructions. Then, you may need to restart the Mac, after which you can erase the SSD. If you are unable to reformat it then restart your Mac in Recovery mode (below) and use Disk Utility to erase it while in Recovery:


How to start up from macOS Recovery - Apple Support


Recovery will preclude any the effect of any third party system modifications from preventing your ability to reformat it. However, if that SSD requires some third party utility to access it even in Recovery mode, then it may be a function of the SSD's firmware in which case you may need to ask Seagate for help. Perhaps their app requires an update for Sequoia (likely) or you may simply be out of luck.

Aug 28, 2025 05:02 PM in response to John Galt

John Galt wrote:


Joseo wrote:

To me, that app is not 'working' with Sequoia, and upon attempting to open the SSD with Finder, the bundled protection attempts to start but gets wound up in the effort, unable to open the SSD.
Hope that adds information to the theme.

Yes it does. The first order of business is to uninstall that app. Refer to its instructions.

FYI, actually the first order of business is to turn off the Lacie drive's built-in hardware encryption which I'm assuming is enabled, otherwise there is no way to use this Lacie lock & encrypted drive for anything than a paper weight. Only the physical drive will be seen with no way to interact or even see any partitions on a locked hardware encrypted drive.


This may involve updating the macOS app, or installing the app on a Windows PC so that the Lacie drive can have the hardware encryption turned off.


More than likely once this is done, the Lacie drive may work fine with TM without needing to wipe it.


If the Lacie software is unable to unlock & disable the Lacie hardware encryption, then that software (or any other third party software with the ability to issue a PSID reset) can be used to reset the SSD's encryption keys thereby unlocking the drive & destroying all existing data on the drive. There is usually a PSID number on the bottom of Self-Encrypting Drives (SEDs) which utilize built-in hardware encryption that can be controlled with a password.

Aug 29, 2025 06:58 AM in response to HWTech

HWTech,

i have a SID and. PSID.But how do I ‘contact’ the SSD If upon attempting to open it it goes haywire? That is how do I do what you describe : “that software (or any other third party software with the ability to issue a PSID reset) can be used to reset the SSD's encryption keys”? Thank you!

Aug 29, 2025 08:17 AM in response to John Galt

Guys, Gals, to ALL!

I just contacted Seagate. Explained the issue, or issues. The Tech, Joshua, asked me to download Toolkit. (I told him I had done that in the past days multiple times...etc., etc.). He insisted. Toolkit downloaded, asked for the SSD. Connected the SSD - opened it! - worked like a charm!

He downplayed upon gratefulness, and when asked if there had been a software update, he answered affirmatively...!

Right now the SSD is working, updating the Time Machine, backups - thank Universe, and All of You! Thank you!

Aug 29, 2025 08:29 AM in response to Joseo

Joseo wrote:

Right now the SSD is working, updating the Time Machine, backups - thank Universe, and All of You! Thank you!

Personally I would turn off the Lacie's built-in hardware encryption since Time Machine can encrypt the TM backup. By also using the Lacie/Seagate software, you are making things much more complicated in this regard since you must rely on Seagate/Lacie to provide updated software.....sometimes that could take weeks assuming Seagate/Lacie even acknowledge a problem.


Keep in mind whenever Apple provides even a simple update patch to macOS, it can break third party software such as Lacie/Seagate's drive management software. With a full macOS upgrade to a new major version, breaking of the Lacie/Seagate software is even more likely.


Besides, by relying on the Lacie software to manage the built-in hardware encryption, you lose out on being able to restore from a TM backup during initial setup of a clean OS or a new system since the Lacie software won't be available at that time. You would need to set up a new macOS admin user, install the Lacie software to unlock the encrypted drive, then use Migration Assistant to transfer your TM backup to the new/clean system.


Aug 30, 2025 07:25 AM in response to John Galt

Yes - that feels to be the next step.

Let me abuse you again with another question: can you point me to where I will find steps to do that? any special formatting parameters? 2) To "uninstall" Toolkit is simply to delete the file from the Main drive, right?

And I apologize If this is getting tiring: it is for me.

Thank you so much!

PS: BTW, the file "smbd" needs to be allowed in Privacy settings. Key!

Aug 30, 2025 08:59 AM in response to neuroanatomist

So, help me with this. The SSD is the backup disk used only for Time Machine backups. To copy for a safe backup can i copy/one/some/all of the contents of the SSD to my hard drive? Is there a number of those files in ™ that would equate to say, the latest backup that I could copy simply to the main drive while Doing the procedure suggested?

Aug 30, 2025 10:47 AM in response to Joseo

You cannot copy a TM backup (at least, not with functionality retained). Time Machine uses a specific structure for backups so that only changed data blocks are actually copied, that makes each backup as fast and as small as possible, but also means you really need to use the TM browser to access the files.


With just that one drive, you’ll need the scorched earth approach, erase and start the TM backup fresh.


Another option now that you have access would be to buy a new drive and hang onto the current one. You’ll start fresh with the new one, you can keep using the older one for a while (with the caveat that this may happen again with a future macOS update). It’s really best to have >1 backup anyway. After some time, you could then wipe the current drive and start fresh so you’d have two backups with neither relying on the 3rd party encryption.

Use of LaCie SSD for backup to Time Machine

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