Partitioning 2 HDDS in 3 drives

  barnettgs 00:08 18 Jul 2003

I have purchased a new 120Gb harddrive and windows XP software. I plan to use old 20GB HDD as a back-up drive.

But I want to partitioning 120 GB drive into 20GB C:, 100GB D: and then E: the rest of 2nd HDD.

Windows XP will runs on C drive and document, personal files etc, will be on D drive.

I know that there is partitioning tools in Windows XP CD but how do I patitioning the drive size accurately?

e.g. If I put in 20,000,000 bytes partitioning tool and the size will show up less than that in windows you understand what I'm trying to say? How do I find out the correct size? Thanks

  woodchip 00:21 18 Jul 2003

Leave the old drive disconnected first the if you have not got Partition Magic you will have to partition the 120 drive with fdisk an old win98 disc will do this. It needs to be set as master, do an auto detect drive in bios first. after you have partitioned the drive just connect the old drive it should be set as slave if it's on the same cable as the other drive, then start to see if bios sees the drive if not you will have to go to bios and auto detect, when it can see the drive, if you have loaded windows just go to Win Explorer right click on the old drive choose format. that should do it.

  woodchip 00:25 18 Jul 2003

PS you can use 24%it should be near enough

  barnettgs 00:33 18 Jul 2003

ok, how did you work out that 24% should be near enough? It would be 28.8Gb on calculator but i guess it would be around 25GB on windows?

  madPentium 00:49 18 Jul 2003

I thought the rule was 1024mb for every gig? it will also take some space for file handling with ntfs or fat32.
I make 20gig (20*1024) = 20480mb
= 20,971,520kb = 214,811,279,360 bytes

  DieSse 09:06 18 Jul 2003

You will not be able to get the figures to an exact number, because of the way the hard drive sectors are organised. But, in any case, you don't need to .. Close enough is "close enough".

You also need to know that 20Gb may be one of two figures, depending on how it's defined (see below)


No, the rule is 1024 byts for each Kilobyte.

Thus 20Gb = 21,474,836,480 (in computerspeak)

In normalspeak it's 20,000,000,000.

  powerless 09:15 18 Jul 2003

My 120 formats at 111.

  Jester2K II 09:17 18 Jul 2003

barnettgs - i agree with the above. You'll never get an exact size. The best thing is to do as above. Will you really notice that one drive is 20.1Gb and the other 99.9Gb??

I have a 60Gb main drive and a 20Gb slave partitioned into 17.2Gb (18,473,943,040 bytes) Backup drive and 1.86Gb (2,006,935,552 bytes) Page File drive and i don't miss the fatc they are not precisely 18 Gb and 2 Gb which is what i tried to partition them as.

  barnettgs 17:44 18 Jul 2003

Ok, actually I have a 123.5 GB harddrive but i know the figure in windows XP will be less than that anyway.

Roughly 20GB is fine by me but I'm not fussy about 2nd part of 123.5 GB HDD.

At the moment, I've been trying to work out the caululator with bytes, I'm bit puzzled with the figures you have posted above. Am I missing something?

  barnettgs 18:05 18 Jul 2003

Also if my HDD label says 123.5GB which means it's actually 123,500,000,000 bytes which will reduced to about 115 GB in Windows XP?

Am I correct?

Because I remember the last time I was fitting a new HDD for friend's older computer...its label stated 20GB but is actually 18.6 GB.

  Jester2K II 18:07 18 Jul 2003

Yup - My 60 Gb is 55.8 Gb!!!!!

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