Here is a short tutorial on how to load BOR on unmodified PS2 consoles which contain an HDD & here is what needs to be done:
First you have to download the legal Bor port from http://ps2bor.psx-scene.com/downloads.htm .
Next, download the PS2 version of Beats Of Rage from http://senileteam.segaforums.com/ .
Next, download Cdmage from http://www.geocities.com/cdmage/frames.html .
Next, download CDGENPS2 3.0 from http://www.psx-scene.com/forums/showthread.php?t=29744 .
Now, unzip Cdmage & Beats Of Rage to a blank directory on your PC's HDD.
Load up Cdmage, the select the file menu & click on open & from the pulldown menu select m2/2352 track & goto the directory where BOR is installed & select borps2.bin & click on open.
borps2.bin will open up & click on the track1[mode2/2352][BEATSOFRAGE] link & in the right panel, you will see several files. Highlick BOR.PAK & right click on it & select extract files & enter the directory where you want to save the file & click extract. Now delete the borps2.bin & borps2.cue file & you can also delete Cdmage.
Now extract ps2bor-0.1b.zip & rename bor.elf to HDD_BOR.ELF & rename BOR.PAK to bor.pak.
Now extract CDGENPS2 3.0 to the same directory as HDD_BOR.ELF & bor.pak .
Load up CDGENPS2 3.0, & drag HDD_BOR.ELF & bor.pak into the window. Next click on the icon which says IMG & a window will load up. In the file name, give it the name of Bor & select UMCDR (*.dat) from the pulldown menu & select save. The file will now save. Now, burn it to cd. Now, to load this in your unmodified PS2, you must have PS2MENU loaded as boot.elf from your mem card using PS2 Indy Exploit. If you don't have the PS2 Indepedence Exploit, you can follow my tutorial which shows you how to get the exploit onto your system & it is located at http://www.psx-scene.com/forums/showthread.php?t=25623 . If you have the exploit then load your PS1 Exploit game & when PS2MENu loads up, goto your HDD partition ( press L1 key) & create a directory for bor, I like to use the directory name of bor. Go into your created Bor directory, this is done by highlighting the directory name & pressing the X Key, & hit the triangle key which will enable copying to the directory. Now, remove, your PS1 CD & insert your burned CD, wait for a little while & then press the R1 key & select cdfs, your cd will load up, highlight each file & select triangle which will copy the file to your directory. After you are done, goto your bor directory & select HDD_BOR.ELF & Beats of Rage will load up & you can play it. Now, put away the CD for safekeeping.
I forgot to mention that you must have the most recent version of PS2MENU which is PS2MENU 2.6 which is located at http://ps2dev.org/kb.x?T=1009 . Only PS2MENU 2.6 can read UMCDR cd's, versions of PS2MENU less than 2.6 can't read UMCDR cd's.