Hi, Richard.
Sorry to take so long in responding, but I have persnickety health issues that I have to deal with now and then.
replace the xxx with ram. . . I do not know whether the flash drive installation handles input arguments the same way as with CDs. . . I expect that the "flash screen" should be self explanatory, since the CD startup screen is.
The boot flash screen I get has a list of "advanced" boot choices, one of which is "Copy OS files to RAM for boosted performance". This is the one that writes:
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/vmlinuz initrd=/initrd.gz pfix=ram
I don't know if it also creates a new pupsave file, but I always click on this choice when booting so that everything runs in ram, and I have never lost any saved files by doing so. I don't think it's actually doing a virgen boot, or creating an empty pupsave file.
In any case, I frequently back up my pupsave files, and will do a special .bak backup before editing the three lines in /usr/sbin/Pwireless, as you suggest.
Thanks for your help with this. I'll let you know how it turns out.
Cheers.
Mike