The collected works of florit

As many of you know, the IRIX install media use the EFS file system. MacOS cannot read this out of the box, but that does not preclude you from using OS X to create backup images of your CD install media. I used the hdiutil tool to create the images as follows:

1) Put in the disc you're attempting to image. You will get a popup from OSX claiming the disc cannot be read (this is because of EFS file system that the disc uses).

2) Create a directory on the drive to hold your image files
imac:foodir florit $ mkdir IRIX6.5
imac:foodir florit $ cd IRIX6.5

3) Create the images:
imac:IRIX6.5 florit$ hdiutil create ./IRIX6.5-InstallationTools-June1998.dmg -srcdevice /dev/disk1s0
Preparing imaging engine…
Reading whole disk (unknown partition : 0)…
.......................................................................................................................................
(CRC32 $3CC46F9E: whole disk (unknown partition : 0))
Adding resources…
........................................................................................................................................
Elapsed Time: 5m 36.504s
File size: 225160899 bytes, Checksum: CRC32 $F8CD6FB2
Sectors processed: 607696, 607696 compressed
Speed: 903.0Kbytes/sec
Savings: 27.6%
created: /Users/florit/Desktop/Personal/SGI/IRIX6.5/IRIX6.5-InstallationTools-June1998.dmg

4) Eject the disk
imac:IRIX6.5 florit$ hdiutil detach /dev/disk1s0
"disk1" unmounted.
"disk1" ejected.

5) Burn the image to a new CD
imac:IRIX6.5 florit$ hdiutil burn IRIX6.5-InstallationTools-June1998.dmg
Preparing data for burn
Opening session
Opening track
Writing track
.....................................................................................................................................
Closing track
.....................................................................................................................................
Closing session
.......................................................................................................................................
Finishing burn
Verifying burn…
Verifying
........................................................................................................................................
Burn completed successfully
........................................................................................................................................
hdiutil: burn: completed

6) Verify that your IRIX host can read the burned disc. I've been able to boot my O2 with the resulting disc.

Hope this is useful to someone out there.

Regards,
Louis

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