Mountain Lion - Drive NOT detected

[Toni Sirkiä]

OK ...

Try to keep it as simple, as I can ...

Acer Aspire 7720Z - Laptop ;

Mountain Lion installed on an external USB - hard-drive, because Disk Util's not detecting my internal SATA HDD (formatted as GPT, Mac OS X Extended) .

When I installed the OS, the SATA drive was there, but I could not make any changes to it (I had to remove it from the laptop, and use an external SATA - USB enclosure / dock to format it) .

 

Now, as Mountain Lion is installed  on this external USB - drive I'd like to clone it to the internal drive, but the internal SATA - drive's nowhere to be found .

 

Please HELP me OUT . ():

/ Toni .

Just now, Toni Sirkiä said:

OK ...

Try to keep it as simple, as I can ...

Acer Aspire 7720Z - Laptop ;

Mountain Lion installed on an external USB - hard-drive, because Disk Util's not detecting my internal SATA HDD (formatted as GPT, Mac OS X Extended) .

When I installed the OS, the SATA drive was there, but I could not make any changes to it (I had to remove it from the laptop, and use an external SATA - USB enclosure / dock to format it) .

 

Now, as Mountain Lion is installed  on this external USB - drive I'd like to clone it to the internal drive, but the internal SATA - drive's nowhere to be found .

 

Just now, Toni Sirkiä said:

In BIOS, the drive is detected and SATA - mode is configured as AHCI, quick boot disabled, etc .