Installing 10.15 Catalina on RAID 0 array

[Mr645]

Can anyone confirm if this will work?

Clone the 2 drive RAID 0 array in a 2012 Mac Mini 10.11.6

Upgrade the external clone to 10.15 Catalina

Clone it back to the internal RAID 0 array

Done

Or not

[hal]

no, it will NOT work

booting from a RAID was last supported with 10.12. It's been said that copying a 10.13 drive to a RAID would work, but you can't run updates and I seem to remember all sorts of problems - I certainly wouldn't trust it. That's when I left RAID booting. I haven't heard of anyone duping 10.14 or 10.15, but I would suggest that it would be a BIG waste of time.

[jdc]

Single SSD is faster.

[Sarcany]

No. Don't even try it.

You might be able to use the DosDude tool or Carbon Copy Cloner to deal with the low-level stuff of making bootable Catalina volumes on a RAID, but...

1. You shouldn't be booting from a striped RAID. It's very VERY risky.
2. It's an unsupported configuration that can be hosed by a system update or crash.
3. You have better options. Like NOT using a striped RAID for your boot vol and instead using a SSD.

[Mr645]

Thank all. Looks like the upgrade path is going to include a 2TB SSD and a docking station to clone the RAID 0 array. Then disassembly of the Mini to replace the drives.

Not free and a lot more work. Oh well.

Thanks all