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Resources for Crusty Old Sysadmins
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UNIX Crap
- Export and Mount NFS Shares

Network Crap
- Use a Raspberry Pi as a WiFi Router

SGI/IRIX Crap
- Basic SGI hardware info
- Installing Photoshop 3.0.1
- Installing Illustrator

Classic Macintosh Crap
- Mac Plus SCSI and using a BlueSCSI
- Mac IIci repair notes

Sun/Solaris Crap
- SunPCi cards

NeXT Crap
- Basic hardware info

Abandonware Resources Installing Photoshop 3.0.1
Assuming you have a fresh install of IRIX, with no Adobe products, the process is fairly straightforward.

What is needed?
The most convenient source for everything you need is the CD image Photoshop3.01_IRIX.iso.

You will also need the license patch to enable necessary features, like Save and Export. This is in an archive named photoshop-3.0-irix.tar.gz. Extract the archive and find the patch directory containing the file src.so.

After downloading the ISO, you can burn it to a CD, but I found that the most convenient method is to extract the files from the ISO and put them in a directory. In my case, I created an NFS share on a Raspberry Pi that was mounted on my O2, and extracted the ISO there.

After extracting the ISO, you'll have a directory named adobe with a handful of subdirs:
pi@cpi64:/export/nfsshare/sgi/adobe $ ls -l total 20 drwxr-xr-x 2 pi pi 4096 Apr 10 15:50 acroread drwxr-xr-x 2 pi pi 4096 Apr 10 16:34 nxbasic drwxr-xr-x 5 pi pi 4096 Apr 10 15:50 photoshop drwxr-xr-x 4 pi pi 4096 Apr 10 15:50 ppd drwxr-xr-x 2 pi pi 4096 Apr 10 15:50 showps
NOTE: All of the below commands should be run as root from a terminal window, while you are logged on as your regular user.

Install ppd first (necessary because the Photoshop install may error out at this part of the process)
After mounting the NFS share on your SGI, change to the install directory for ppd and run the install script:
cd ppd/ppd__1.0 ./easyinst.ppd
Follow the prompts - it's straightforward.

Install Photoshop
Change to the photoshop install directory:
cd ../../photoshop_3.01

Run the installer script:
./Install_Photoshop.csh

During the install process, pick option 1, as you have already installed ppd.
Say yes to rebuilding the printer database
This will install DPSNX (the display postscript subsystem) and Photoshop.

Install the patch
From the patch directory you extracted from the tar.gz archive earlier, copy src.so to the directory Photoshop was installed. The below example shows the default location.
cp src.so /usr/adobe/Photoshop_3.0.1/lib/src.so

Setup Photoshop
Start Photoshop_sgi from the Icon Catalog. It will fail, and give instructions that need to be followed as root from a command prompt to complete the setup.

Once the setup has finished, log out and log back in.

Once logged back in, open Photoshop_sgi from the Icon Catalog and it should work.

Note: There have been reports that DPSNX will not run as root, but it should run fine under your regular user account.