Mass Storage - Linux - Debian Wheezy

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I have just connected my phone to my Debian Wheezy machine in a hope that unlike Samsung, Sony will have Mass Storage as a option insted of MTP (Media Transfer Mode) / PTP (Picture Transfer Protocol).

# uname -a
Linux PrecisionM6600 3.2.0-4-amd64 #1 SMP Debian 3.2.63-2+deb7u2 x86_64 GNU/Linux

# dmesg

[228867.196204] usb 4-1.1: new high-speed USB device number 14 using ehci_hcd
[228867.289783] usb 4-1.1: New USB device found, idVendor=0fce, idProduct=01ba
[228867.289793] usb 4-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[228867.289800] usb 4-1.1: Product: D6633
[228867.289804] usb 4-1.1: Manufacturer: Sony
[228867.289808] usb 4-1.1: SerialNumber: XX1X319X8X

But I have been mistaken, when connected, I had offer by the phone to install software on my

PC so I agreed and end up with virtual CD-ROM to install Windows software and no Mass Storage

[228938.616806] scsi10 : usb-storage 4-1.1:1.1
[228939.612859] scsi 10:0:0:0: CD-ROM            SONY     CD-ROM           0100 PQ: 0 ANSI: 4
[228939.617458] sr1: scsi3-mmc drive: 0x/0x caddy
[228939.617879] sr 10:0:0:0: Attached scsi CD-ROM sr1
[228939.618152] sr 10:0:0:0: Attached scsi generic sg3 type 5
[228940.195485] ISO 9660 Extensions: IEEE_P1282

Why is there no support for Linux / Mass Storage on Z3?

[Rickard · Accepted solution]

If you have an external SD card in your phone you can connect this in MSC instead of MTP. You can set this under Settings -> Xperia Connectivity -> USB Connectivity -> USB connection mode. But the phones internal storage can only be connected using MTP. As i understand it, this is because MSC would require your PC to have exclusive access to the memory and the phones internal storage is used by the apps and OS so it can't be used for MSC.