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How to set Startup System Security to none with Catalina  

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Posts: 2513
(@softraid-support)
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Joined: 5 years ago

Yes you can, as this was a limitation imposed by Catalina.

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Posts: 12
 rnb2
Customer
(@rnb2)
Active Member
Joined: 3 years ago

Is it a known issue that 5.8.4 won't install because it thinks Startup System Security is still on (haven't been able to check yet), where earlier versions didn't flag this at all? I'm on a 2018 Mac mini.

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Posts: 2513
(@softraid-support)
Member
Joined: 5 years ago

The known issues is Secure Boot must be disabled. What 5.8.4 did was force users to do this, as otherwise they are working with a limited system that has poor write performance and cannot rebuild.

 

We are workign with Apple to remove this requirement

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 rnb2
Customer
(@rnb2)
Joined: 3 years ago

Active Member
Posts: 12

@softraid-support Got it - I had somehow missed this issue, so hadn't turned off Startup System Security, but after turning it off, I'm not seeing any discernible change in performance.

I have an OWC Express 4M2 with 4x500GB Samsung 960 Evo in RAID0, and I still get about 1350MBs write/2100MBs read in Aja (w/4GB 3840x2160 ProRes HQ test files). Performance with the 4M2 has never been quite as fast as expected, but I didn't really think much of it. I got it for capacity when there was little else available in late 2018 to economically reach 2TB via Thunderbolt SSDs - the TB2 Thunderbay mini had been discontinued (and the TB3 model was still in the future), there were no small 2-drive SATA Thunderbolt 3 enclosures around, and 2TB SSDs were still very pricey.

Is there something I'm missing?

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Posts: 2513
(@softraid-support)
Member
Joined: 5 years ago

The M2 has a peak of about 700MB/s per blade, but otherwise will go as fast as it can, up to Thunderbolt limitations. That looks a little slow for writes, but you can try deleting the volume, initializing the blades again and creating a new volume. You may get faster performance after that. SSD's behave differently than HDD's

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