Space Required for Adding Win2K as Dual Boot

I have an old Pentium II, with a 3GB drive and 256MB RAM, Running Win98...I have a new app that won't allow install without Win2K...I have only 700MB free space on my drive. How much space will a seperate Win2K OS installation take up?. And can I install it a seperate directory in the 700MB space, use dual boot option, and boot to the new OS only to run my one application? ----Secondly, if the answer is No Way,.. I have a second hard drive i could install but only one connection on the IDE cable. Can I get an IDE cable with two connections and slave the second drive through the same IDE port 1. (my second IDE slot is being used for my CD burner).  I would then install Win2K on the second drive and still dual boot.  I hope i have explained enough of my problem.
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Rob WilliamsCommented:
You could install Win2K with room to spare but with the page file, updates, your app, and who knows what you may run into trouble quickly. I have lots of old machines running W2k on 1GB drives, but they are pretty basic. Your second option is probably the better route to go. Add a second drive with a dual connector IDE cable. Keep in mind you will probably need to change the jumpers on the drives for master and slave, unless cable select is working properly, which is rare.

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Rob WilliamsCommented:
Just checked Microsoft's recommended system requirements for installation; "2 GB with 650 MB free space". Though you may have enough room to run W2K, you may not have enough room for the install, as there are temporary files added during the installation.
Lee W, MVPTechnology and Business Process AdvisorCommented:
As RobWill has suggested, it would be a tight squeeze getting it on that one drive.  As long as you only have ONE device currently on that IDE line, then yes, get a cable with three connectors (one to the mainboard, and two single connectors to devices; three connectors is FAR more common than 2; 4 connectors or more does not exist because you can only have two devices per IDE line).

If you just can't do that and want to try installing it to your C: drive as is, you'll probably need to use a trick I learned once - you'll need to REMOVE RAM - reduce the machine to 64 MB if you can or otherwise, 128 MB.  This is because Windows INSISTS on creating the page file during setup and if the RAM is large, the pagefile is large as well.  By dropping it to 64 MB the page file would be 96 MB (1.5X RAM) and you would than have 600 MB to install 2000 to, which should be sufficient.  I THINk 500 MB will be sufficient as well, but 400 is pushing it - which is what you'd have if you tried to install without removing RAM.

Once the install is complete, PUT THE RAM BACK!!! Windows 2000 likes RAM a LOT more than 98 does and you WILL benefit from having it, and though not recommended, you can usually get away with leaving the page file smaller than the recommendation of 1.5X RAM for normal operation.  (Windows 2000 does not adjust the page file by itself (beyond it's initial and max settings) if you add RAM).
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Please note that installing 2 Windows installations on the same partition is not recommend. Since both installations will use the 'Documents and Settings' and 'Program Files' folders, it will become a mixture of W98 and W2K files.

The second option is the best way to go. But keep in mind that there are size-limitations caused by the system-bios that may prevent you from installing an multi-gig disc in your system. Sometimes you can overcome those limitations by updating your systembios, but sometimes that's not enough and you need a special piece of software which you can download from the HDD manufacturer's website. (Typically check the support section, every self-respecting brand provides those tools).

Sometimes an PCI-IDE controller can also help to overcome this limitation; This way I've got 3 200Gb disks running hapily in my P3 450 Mhz. (although I have to admit, this machine is running Linux and I haven't tried to put Windows on it)
ejonlineAuthor Commented:
I'm increasing the point value, only so that I can give 50 points each to the second and third commentors. RobWill's solution works fine and is first, also he took the trouble to check MS's website for space requirements, which showed that it Might squeeze on the drive, but "not a good fit". Additionally, LeeW and RiDo78 were helpful with their comments. Especially the PCI-IDE port that RiDo suggests, (didn't know they made those), and the RAM trick from leew.  Thank you all, and I hope you all find my point split to be fair and appropriate.
Rob WilliamsCommented:
Thanks ejonline,
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