322buick
2 Iron

Dimension 3000 "OS install mode grief"

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Good Morning,

Dell Dimension 3000

I just loaded XP Pro SP3 in a new WD 160gb HD for my wife. I turned "OS install mode" to on in BIOS [because that's what I was doing] and all it did was roadblock me and hinder the installation. Constantly warning me that OS install mode was on [with exclamation marks] saying memory has changed to 256mb [it has 2gb] and kept stopping the install part way through, then restarting all over again. I ended up turning OS install mode back to off and it zipped right along like it should.

I just now recalled this same thing happening on this PC three years ago but I never looked for a reason.  Is there an explanation for a function so simply and logically named to do the exact opposite?

Many thanks to you all,

Mike

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rdunnill
5 Rhenium

Re: Dimension 3000 "OS install mode grief"

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The Dimension 3000 is basically a near entry level home PC. It was introduced to the market in mid-ish 2004. The largest thing Windows had in 2004 was XP. XP Pro didn't show up until around 2005. Vista was not even heard of by the public in 2004 . So what else were people going to install then,  2000 or ME?  So I guess I still don't know a purpose for this setting/option on this inexpensive Home PC.

There were still many holdouts of Windows 98 back then, just like there are many holdouts of XP today. For that matter, there are still some Win2K holdout shops to this day, despite support and updates having been discontinued.

17 Replies
muto
3 Zinc

Re: Dimension 3000 "OS install mode grief"

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a handful of forums members have a misunderstanding of the purpose and use of the 'os install mode' option in the bios.

you do not need to turn on 'os install mode' on a dell dimension 3000 (or any other dell) in order to install windows xp pro sp3 (or any other version or service pack level).  

when os install mode is enabled the system limits the total available system memory so that operating systems that are unable to recognized large amounts of memory can be installed.  this does not include windows xp.  note that it is called "os install mode" and not called "windows xp install mode."

speedstep
6 Thallium

Re: Dimension 3000 "OS install mode grief"

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I disagree.   If you have more than 2 gigs of ram and you are installing 32 bit Drivers there can be stop errors related to "too much ram" at the time of install.  When the physical RAM that is installed on a computer equals the address space that is supported by the chipset, the total system memory that is available to the operating system is always less than the physical RAM that is installed. For example, consider a computer that has an Intel 975X chipset that supports 8 GB of address space. If you install 8 GB of RAM, the system memory that is available to the operating system will be reduced by the PCI configuration requirements. In this scenario, PCI configuration requirements reduce the memory that is available to the operating system by an amount that is between approximately 200 MB and approximately 1 GB. The reduction depends on the configuration.


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muto
3 Zinc

Re: Dimension 3000 "OS install mode grief"

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I disagree.   If you have more than 2 gigs of ram and you are installing 32 bit Drivers there can be stop errors related to "too much ram" at the time of install....

a dimension 3000 can not accept more tha 2gb of ram so your argument is completely absurd.

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322buick
2 Iron

Re: Dimension 3000 "OS install mode grief"

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The Dimension 3000 is basically a near entry level home PC. It was introduced to the market in mid-ish 2004. The largest thing Windows had in 2004 was XP. XP Pro didn't show up until around 2005. Vista was not even heard of by the public in 2004 . So what else were people going to install then,  2000 or ME?  So I guess I still don't know a purpose for this setting/option on this inexpensive Home PC.

Thanks guys,

Mike

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rdunnill
5 Rhenium

Re: Dimension 3000 "OS install mode grief"

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The Dimension 3000 is basically a near entry level home PC. It was introduced to the market in mid-ish 2004. The largest thing Windows had in 2004 was XP. XP Pro didn't show up until around 2005. Vista was not even heard of by the public in 2004 . So what else were people going to install then,  2000 or ME?  So I guess I still don't know a purpose for this setting/option on this inexpensive Home PC.

There were still many holdouts of Windows 98 back then, just like there are many holdouts of XP today. For that matter, there are still some Win2K holdout shops to this day, despite support and updates having been discontinued.

322buick
2 Iron

Re: Dimension 3000 "OS install mode grief"

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rdunnill,

Great explanation!   I really appreciate it.

Have a great new week everyone.

T'care,

Mike

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muto
3 Zinc

Re: Dimension 3000 "OS install mode grief"

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the real problem is that there are a handful of people in this forum that insist tat it is necessary to adjust the "os install mode" before installing windows xp when in fact it is not necessary and confuse novices.  ironically these are the same people that recommend the use the dell's instructions on how to reinstall the operating system, instructions which do not include directions to change the os install mode switch.  

if you want to know about the 2gb limitation and the various versions of windows operating system there is a nice write up on it here: msdn.microsoft.com/.../gg487508

rdunnill
5 Rhenium

Re: Dimension 3000 "OS install mode grief"

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rdunnill,

Great explanation!   I really appreciate it.

Anytime, Mike!

 

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muto
3 Zinc

Re: Dimension 3000 "OS install mode grief"

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and great that you posted your experiance of how turning 'os install mode' on hindered installation of windows xp on a dimension 3000 with 2gb of ram installed.  perhaps the people spreading bad information about the use of this feature will learn from your remarks.

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