QUOTE
Already install Tiger many times a few months ago whith this DVD,
Same computer?
Once again, what color is the DVD?
You have several threads on this topic and I'm confused about what was done when and where.
Apparently, the disk is readable enough to work on one machine. But I don't have any idea what the specifications are for all of them. I don't even know the specs on the one that you had success with. Here is one link that discusses what I think you are trying to do: Install and older OS on a machine with a newer OS. <http://lowendmac.com/ed/rosen/09ar/install-mac-os-x-tiger.htmlt>
Summary:QUOTE
Could install it on a third DA
One machine.
QUOTE
On the other whith, formating, surface test, DW, always the same error at the end
A second machine.
Apparently you have yet a third machine.
DW is not magic. If it can't get a test to run successfully, you have a choice of running a different utility app that result or accepting the result. Running the same test more than three times seldom changes the result, especially if the result is the same all three times.
QUOTE
what could i try else
Although it's probably not what you want to hear, you could try buying a newer model Mac. However, I think it is the ability to use internal cards that is forcing you to keep buying these older ones, right? I would at least suggest that you find a more reliable source for these machines, especially if you are using eBay...
There are companies that specialize in older Macs, probably at higher prices than eBay, but you usually get at least a 30 to 90 day guarantee... <http://resale.headgap.com/> and <Very few systems left, however!>
QUOTE
Ok for now, but for how long?
Nothing is certain, except taxes and death!