Several eBay sellers offer a "remote recovery service." You ship them your unit, they image a new HDD using a master installation disk, and return it. This costs $150-$250 but saves the headache of finding a rare disk.
For the AVIC DRZ09, the "Installation Disk" typically serves one of two functions:
You turn on the car. The Carrozzeria logo appears, then freezes. Or, you see a stark Japanese error message: Carrozzeria AVIC DRZ09 Navigation-installation disk
“システム起動に失敗しました。インストールディスクを挿入してください。” (System startup failed. Please insert the installation disk.)
This indicates that the boot sector on the internal drive is corrupt. Several eBay sellers offer a "remote recovery service
This paper describes the installation disk included with the Carrozzeria AVIC-DRZ09 in-dash navigation system. It explains the disk’s purpose, contents, installation procedures, common issues during installation, compatibility considerations, data and map update pathways, legal/ownership considerations, and best practices for preservation and troubleshooting.
If you know someone with a working DRZ09, you can clone their internal HDD. For the AVIC DRZ09, the "Installation Disk" typically
This is the most important file on the disk.