[blue68f100]

I've stayed out of this for the most part. Phoenix32 is right you are missing a few things actually.

I have problem when persons come here asking for help, failed to use the search feature to find the answer. Then says it can't be done when he tries and fail. All it indicates it the user does not have the knowledge and or expertise that he says he has.

The 4200 upgrades the same as my 4500. I did mine 3+ yrs ago when none of this knowledge was available and/or posted on this forum. I upgrade ram as well as HD's capacity.

Now if I recall you upgraded the ram but only 1/2 was be reported, that should have told you the ram is not compatiable with the unit. I suggest you look at the original ram (full specs) and see what you missed. The GOS likes lots of ram when it comes to large capacity HD's.

Now when it comes to HD's most will work if setup properly. Now some work better than other. There is one setting that works best if you only have 1 HD on a controller. Now for some knowledge, the IDE controllers are converted to SATA on the MB. What settings does SATA use? So the use of SATA to IDE to use large capacity drives will work if you can get them to fit in the confined space. Now most all raid5 arrays are sensitive to timing, so I can not say they will work trouble free without long term extended testing.

btw, You missed up on your 1st step.
There are some important steps that MUST be done before you remove the original HD's.