I did for a friend for several different firmwares, works fine, no problem, the XMB auto-adjusts properlly for the new width
From memory...
Is needed to edit xmb_normal.rco ...and... xmb_ingame.rco (or whatever are named one for main xmb and the other for ingame)
In the rcoxml generated when you extract the contents of the .rco locate the line with the label named "xmenu", it has an attribute named "itemscount" with the value 0xa
Under the line with the label "xmenu" you have his "childrens", one line for every child (settings, photo, video, music, game, etc... 10 lines in total)
You just need to delete the lines you dont want to be displayed, and then modify the value 0xa
The 0xa is the number of main icons in XMB (0xa = 10 by default)... depends of how many you are going to delete you need to reduce it
For my friend i removed: photo, music, video, network, psn, friends (intended to be a "offline gaming only" PS3, heheh)
Btw
The problem you mention about a trailing "blank" space is a mistake, is the consequence of deleting one of the childrens of "xmenu" but not reducing the value 0xa of the attribute "itemscount"
So the line where "xmenu" is defined is reserving an space in the screen bigger than the humber of his childrens, is not a bigger problem though (no firmware crash or anything bad noticed) but is wrong
Very interesting, Thanks for that explanation.
I have seen a few people mention that the patch for removing a category (TV I think) in MFW Buildier doesn't do the job correctly and leaves a blank space, I wonder could a new working patch be developed for that by someone here. Removing entire categories is something I have seen people asking about..