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How to get from system 7.0 to system 7.5?

I appear to be in somewhat of a pickle:

How would I install system 7.5 on a PowerBook 140 w/system 7.0? I have a
couple ideas, but I'm afraid to try without someone's opinion.
Somethings to keep in mind while advice giving:
I also have networkable a Performa 550/CD
and
I have access to an external CD-ROM drive (The school will let me borrow it)
and
I have the sytem 7.5 CD that came w/my Performa
and
A system 7.5.3 CD from a PowerMac


I was thinking along the lines of:

Possible solution A: Hooking my Performa 550/CD up to the PB w/a small network, using the 7.5 CD as the PB's startup disk, and perform a clean install on the PB.
But there might be some problems:

My buddy with a Mac Classic II tried it, but it [the mac] said the extensions [File sharing, appletalk, etc] were too new.

And I'm not entirely sure a shared volume could be used as a startup disk if it was not local.



Possible solution B: Go out and find the system 7.5 full install disks. But do the sytem 7.5 install disks even exist? (I called Apple, they said something to the effect of "buzz off,")

C: Go out and buy the 7.5.3 developer's CD. (Supposedly comes with sys 7.5.3 FULL install)

I can supply the proper UPDATERS, but I'd need the full system to update it.

Any disk images, advice, criticism, other solutions ANYTHING would be a big help.

THANKS!!!
      --Dave

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TrntRznr
Asked:
TrntRznr
1 Solution
 
weedCommented:
Best bet. Install the system you want onto the performa then network the two and drag the new system folder over the network (after renaming the system on the PB) to the powerbook. restart and trash your old system folder.
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TrntRznrAuthor Commented:
>Install the system you want onto the performa then network the
>two and drag the new system folder over the network

Your answer made me think of something. What if I made a copy of the Performa's System Folder, and copied it over the nw?

You also forgot to remind me to throw away the finder in the PB's [renamed] system folder. That could've wreaked havoc on my machine.

And also, what about the "Cannot load networking extensions software. Files are too new" dialogue box? Without those, I can't even file share.

Luckily, I posted this on UseNet and someone sent me the system 7.5 disk images.
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