As two of my O2 machines only have a 4 GB disk drive, I decided to replace these disks with larger ones. On E-Bay I found 36 GB Fujitsu disks for 20 Euros each. They came in good shape and are newer (build date: 2005) than the original ones (build date: 1998).

As I did not want to install and configure IRIX from scratch again, I looked for a way to clone the root disk onto the new disk.

Installation of IRIX can be done in different ways.

Install IRIX6.5.22 using virtual CDROM drives describes my prefered way using BlueSCSI and virtual CDROM drives.

There are different SCSI computer storage emulation platforms available to replace real SCSI disks or CDROM drives.

The following 2 emulators are Open-Source hardware.

• BlueSCSI
• ZuluSCSI

I choose to evaluate the BlueSCSI emulator, because it is cheaper (~ 60 Euro) and it is available with a Centronics-SCSI connector. It can be purchased from several small companies either as a kit or a fully assembled product. My order of the fully assembled BlueSCSI from One Geek Army was delivered in good condition and worked just out of the box.