Question about old formated disk drives/volumes

[Trigue]

Hello, I want to ask if I move on High Sierra would I be able to read and write my other Hard Drives formated on Sierra as Mac OS Journaled. When I tested the High Sierra on ver. 10.3.1 it was not possible to see the volumes and reach the files. Is this on 10.13.3 possible now ? Because when I move I don't know how to transfer the information from Sierra to High Sierra.

Can a volume be converted the new format of High Sierra without erasing the files?

10x in ADVANCE !

 

[Trigue]

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[BreBo]

Hello, I want to ask if I move on High Sierra would I be able to read and write my other Hard Drives formated on Sierra as Mac OS Journaled.

Yes

When I tested the High Sierra on ver. 10.3.1 it was not possible to see the volumes and reach the files. Is this on 10.13.3 possible now ?

Certain SATA controllers have issues with AppleAHCIPort v329 (eg ICH10, 5 series, 7 series, ASMedia 1061)
Disks may fail to initialize, not readable or hot plug may fail.

• Try Apple AHCIPort.kext v328 or Fix for ICH10.
• Check [Solved] Drives not showing up in installer "Disk I/O error" and [Solved] ICH10R and High Sierra

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[Trigue]

Thanks for the answer !

How I see that kext is the problem for this kind of older chipsets. The point is I see the the other name of the Disks but the volumes are not initialised. I see only the volumes of the main hard drive when I have 2 volumes 1 for Sierra and second non system. I can install high Sierra only there, but seems Disk utility recognize these volumes as 2 different hard drives not as 2 volumes on one hard drive....

Probably apple wants to limit the compability....and make older drives/chipsets not usefull..... How I see in my case I will need that achi fix kext on my usb high Sierra install usb stick.

And sorry, for the rules breaking, didn't know. Next time I will know !

Cheers !

 

[BreBo]

How I see in my case I will need that achi fix kext on my usb high Sierra install usb stick.

The AHCIPort.kext v328 will not work on your USB installer, it needs to be installed in /Library/Extensions using a kext installer.
You need to add the patches to your config.plist on the EFI partition of your USB installer.