MP 1,1-5,1 Mac Pro4.1 El Capitan install

[IboJacobus]

Hello everybody,

Please excuse my inevitable spelling mistakes, English is not my native language...

I am a musician based in Amsterdam, Netherlands
Joined this forum to learn more, and if possible help others
My expertise is in DAW's , especially Propellerheads Reason.

I recently bought a Mac Pro 4.1
Was kind of succesful installing El Capitan via an USB 2Terrabite external disk.
Everything worked except my 3 internal harddrives wont show up in " Computer" in the navigation pane...

Pressing Option on boot, nothing except the USB disk with MacOsX on it, and the bootable USB disk i had installed OsX from.

Command+R, going into resque mode, into diskutility : no internal disks shown.

From resque mode trying the terminal ,doing a diskuitil list : no internal disks shown.

I actually want this machine updatet to a 5.1 firmware, got to understand that it has to be done from off El Capitan.

I have allready, on a separate disk, Snow Leopard going fine. Altough ofcourse very limmited qua internet browser and no acces to the appstore and such.
Snow leopard is not where i want this machine to be, you will understand?!

 

[haralds]

Have you checked in Disk Utility? They might be in an unreadable formant/

 

[Macschrauber]

when the disks dont show with diskutil list then they are physically not readable.

What exact brand and type are they? Sometime you will find SAS drives, what need a special controller, in Mac Pros - and the raid card pulled.

 

[IboJacobus]

when the disks dont show with diskutil list then they are physically not readable.

What exact brand and type are they? Sometime you will find SAS drives, what need a special controller, in Mac Pros - and the raid card pulled.

Thank you for replying!
So , how can it be that if i boot from Snow Leopard those same disks DO show and are readable and writeable?


My 4,1 identifies as:
Model name Mac Pro
MacPro4,1
Quad Core Intel Xeon x2
2.26 GHZ
8 cores
Bootrom version MP41.0081.B07
SMC version 1.39fs system and processor tray

ATI Radeon HD 4870
Disks are:
Bay 1: Samsung SSD 850 EVO 250G (Snow Leopard System)
Bay 2: ST3250318AS
Bay 3: WDC WD3200AAKX
Bay 4: WDC WD10EADS
and under the DVD drive i have also a WDC WD10EADS

 

[IboJacobus]

Have you checked in Disk Utility? They might be in an unreadable formant/

Format you mean?
They are all HFS+ Journaled
GPT Smart status Verified
According to the SnowLeopard System Profiler

 

[IboJacobus]

Finally result!
From jensd.be i saw a youtube guide on how to flash the firmware to 5,1
Not to hard to do, just follow the instructions on the youtube post
Main thing is to edit the ExtractAndPatchEFIFiles script
So now i'm on MP51.007F.B03
Next is to install Catalina....
Thank you guys for thinking with me !

 

[aclarubicin]

hey if you need any upgrades for this machine, I'm located near Leiden