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Ugghh partioning HDD and need advise?

Discussion in 'PC Hardware' started by FireDancer, 2003/09/03.

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  1. 2003/09/03
    FireDancer Lifetime Subscription

    FireDancer Inactive Thread Starter

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    Hi all,

    I have just run fdisk and have created a primary DOS drive and made active... 3194 mbytes. I typed 20% in and thats what I got for the C: was trying to get 4 Gigs out of that. hmmm not sure i did right %.

    Next I made DOS extention and puter now telling me that 15626 mbytes left to use at 80% and asking me how much to use.
    I am stuck here as I do not understand how to make D: E: F: as I had planned. I have a 20 Gig HDD and want to get 4Gig 4Gig 8Gig and 4Gig out of it. Can some one advise please if i am doing right or not? And where to go next. The D E and F are going to be logical drives correct? Thanks so much

    ~Fire~Dancer~
     
  2. 2003/09/03
    FireDancer Lifetime Subscription

    FireDancer Inactive Thread Starter

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    Hmmmmm,

    Ok i figured out what I needed to do for the four drives I wanted but they did not come out the size I wanted :(. I have a 20 gig HDD and wanted to Partition it up to C: 4 Gigs D: 4 gigs E: 8 gigs
    F: 4 gigs as it stands now they came out these sizes...

    C: 3.81 gigs
    D: 3.80 gigs
    E: 7.61 gigs
    F: 3.80 gigs

    what did I do wrong? ... well I would think its my math or is this not a exact science to get to a even 4 or 8 ect...?

    Best Regards,
    ~Fire~Dancer~ :)
     

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  4. 2003/09/04
    markp62

    markp62 Geek Member Alumni

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    Sometimes trying to figure out drive capacities can be as tough as trying to figure out a time paradox. Windows Explorer will give you two sizes for the same drive. Under Properties for one of my partitions [2 gb] it will say the capacity is 2,142,543,872 bytes with 1.99 GB next to it.
    Fdisk will report the partition as 2.047 GB.
    It is the numbers that Fdisk uses that throws you. To Fdisk, 1 mb = 10485767 bytes. So you would end up to be less than what you planned.
     
  5. 2003/09/04
    Christer

    Christer Geek Member Staff

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    Hi FireDancer!

    Well, something went hiwire!

    If 3194 MB is 20% then the total size would be 3194 / 0.2 = 15970 MB / 1024 = 15.60 GB.

    If 15626 is 80% then the total size would be 15626 / 0.8 = 19532.5 MB / 1024 = 19.07 GB.

    That adds up to 19.02 GB, which means that You probably got it right!
    Did You start all over?


    If a manufacturer says it´s 20 GB it almost never is exactly 20 GB. I´ll make an example of my own harddisk which IBM claims is 40 GB:

    Adding the sizes in bytes of my three partitions according to their properties in Windows Explorer:

    41 167 425 536 bytes / 1024 = 40 202 564 kB / 1024 = 39 260.32 MB / 1024 = 38.34 GB.

    Checking System Information reveals 41 167 526 400 bytes which indicates that 100 864 bytes are "lost" in the partitioning process.

    Well, if IBM can claim 40GB, then I can claim 8GB/24GB/8GB for my partitions but I know they aren´t.


    Christer

    Edited:

    41 167 526 400 according to System Information is the correct value: 80 405 325 sectors x 512 bytes per sector = 41 167 526 400 bytes.
     
    Last edited: 2003/09/04
  6. 2003/09/04
    FireDancer Lifetime Subscription

    FireDancer Inactive Thread Starter

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    Mark and Christer,

    Thanks for the replys... no I did not start over. I belive I got it right as well but wanted to be sure. yes it states it is a 20 gig HDD but but i cam up with 19.07 too its really no big though.

    And I agree with mark I felt like I was trying to figure out time paradox :) LOL anyways here is what I did

    I made a primary dos partition and made that active which is the C: and typed in 20% use of the drive for space. next I created a Extended Dos partition which gave me the remainder of the space left on HDD to use for Logical drives. When I created the Extended I told it to use the whole remainder and then divided that by 3 which was 100% left of the HDD.

    I figured that I had allready used 20% and 100% left of the remaining space would be 25% 50% and 25%. I then foprmated each drive gave a name and rebooted useing CD rom support.

    I then proceeded with the usual md C:\win98, copy H:\win98\*.* C:\win98 to install windows to HDD and so on and so forth..

    Hope my caculations were right .... it seems so thanks for all the help both of you.

    Regards,
    ~Fire~Dancer~ :D
     
  7. 2003/09/04
    Christer

    Christer Geek Member Staff

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    FireDancer,
    You´re welcome!

    By the way, is this thread kind of a continuation of "Pros and Cons of Partitioning a HDD "?

    If it is, You made an outstanding decision on the partitioning strategy ...... :D ...... !

    Christer
     
    Last edited: 2003/09/04
  8. 2003/09/04
    FireDancer Lifetime Subscription

    FireDancer Inactive Thread Starter

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    Hi Christer,

    Yes.. it was kind of a continuation and I do really appreciate the help and advise you gave me :) now I am confident in partitioning.

    So much so I am looking into a bigger drive like 120 Gig not sure of the brand tho I am reading up on Seagate.. or another maxtor allthough I want to get something a bit faster :)

    Thanks again Christer,
    Very best Regards,
    ~Fire~Dancer~ :)
     
  9. 2003/09/04
    Christer

    Christer Geek Member Staff

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    Well, a lot of people took part in both discussions so I wouldn´t think of accepting all the credit ...... :eek: ...... I´m just glad that finally someone else thinks like I do ...... ;) ......

    Christer
     
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