converting a primary partition to a logical partition?

Discussion in 'backup, imaging & disk mgmt' started by siberianwolf, Aug 23, 2010.

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  1. siberianwolf

    siberianwolf Registered Member

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    hi guys,
    recently i've clean-installed vista on one of my hdd's. during installation i've created two partitions and formatted both of them via vista's setup screen. later, i've decided to get rid of vista and switch back to xp pro. and so i did. but now my secondary partition on which non-system files (like documents, audio files, etc) dwell whicg is supposed to be a logical drive is now a primary drive.
    so my "c" partition is "primary, active" but "d" partition is also "primary" (not active, of course).
    as far as i know, secondary partition (partition "d") must be "logical" partition.
    is there any chance i could convert this partition "d" to a logical partition WITHOUT LOSING ANY DATA?
    thanks & best regards
     
  2. TheKid7

    TheKid7 Registered Member

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    There is always some "risk" in working with partitions. Therefore, you should always backup your data first.

    There are many programs that will perform the task. Many people in this forum recommend Partition Wizard. I have not yet done partition work with Partition Wizard.

    Set Partition as Logical:

    http://www.partitionwizard.com/help/set-partition-as-logical.html

    If you do not want to install any software you could use the Partition Wizard bootable CD:

    http://www.partitionwizard.com/partition-wizard-bootable-cd.html
     
  3. siberianwolf

    siberianwolf Registered Member

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    thank you so very much kid, you made my day.
    one ore thing, though. just to leave no room for any doubts:
    i've converted "primary" partition (secondary partition which has only data on it, no os files) to "logical" w/ the sw you (thekid7) recommended (partition wizard).
    right now it appears as "logical" partition, and everything seems fine. but;
    do you think there could be some sorta trouble or problem in the future regarding this conversion resulting a disaster in which i might happen to lose all the data on this partition? so, should i just copy the entire content of this newly converted logical drive to another physical disk, and then delete that partition, recreate the partition via windows xp's disk manager or via booting w/ xp disk and deleting/creating partition, and then formatting it via xp's disk manager within os, and copy all the data back to this partition (which will be newly created)?
    or should i just let it go and leave it that way, assuming everything's fine and gonna be fine?
    thanks again
     
  4. philby

    philby Registered Member

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    siberianwolf, I was reading your post and wondered why the above should be so.

    All my machines' secondary partitions are primary, only meaning (I thought) that they could carry an OS.

    Why must they be logical?

    Just interested!

    philby
     
  5. siberianwolf

    siberianwolf Registered Member

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    hi, philby
    well, aamof it doesn't necessarily have to be so. the reason why i want it to be is:
    in all those years i've used xp as an os, the secondary partition i created during clean install, it was always set as logical partition. i've never seen & used a secondary partition as "primary" partition along w/ "primary, active" partition on which os was installed. the secondary was always logical.
    this secondary primary thing happened right after i've installed vista (creating two partitions and formatting them via vista's setup). then i've decided to go back to xp pro.
    i've formatted partition c via xp installation and installed xp on it. but secondary parition remained intact. and it was primary as well.
    so i thought, in the future there could be some trouble regarding secondary partition such as mbr failure, etc. and it was always logical. thus, i thought i better convert it to logical. that's it.

    btw, i've a second question:
    after i've installed vista (by creating partitions via vista's setup), there were two partitions but there was no "unallocated space" contrary to my previous experience. i thought this (about) 7-8 MB unallocated space always had to exist for hdd's sake. am i wrong? i thought because xp being an older os than vista, maybe the way it works differs from vista, and it needs this 8 MB unallocated space. after i installed xp, there's still no unallocated 8 MB space, but just two partitions. is this healthy?
    p.s.: sorry if these questions sound a lil bit ignorant.
    thanks.
     
  6. philby

    philby Registered Member

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    well, aamof it doesn't necessarily have to be so. the reason why i want it to be is...

    Thanks - I was just curious.

    Re. your second question; looking at Disk Management in Computer Management, I have apparently no unallocated space either. That's on both Vista and Win7 machines.

    However, on my Win7 machine diskpart.exe shows 1mb 'free space' as well as my 2 partitions.

    Capture.PNG

    Capture2.PNG

    Capture3.PNG

    So maybe diskpart.exe will shed some light on any unallocated/free space.

    philby
     
    Last edited: Aug 23, 2010
  7. siberianwolf

    siberianwolf Registered Member

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    normally, you can't see this 8 MB partition via disk management. only way to see it is to use a 3rd party sw such as acronis ti or disk director, or the sw thekid7 recommended (partition wizard). so there might be an 8 MB reserved partition in your hdd, too.
     
  8. Osaban

    Osaban Registered Member

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    Hi there,

    It is odd that I have lately too been messing around with partitions, and have asked myself the same questions about primary/logical and particularly the tiny unallocated space often found before the primary active and at the end of the logical partition.

    I found this thread:

    https://www.wilderssecurity.com/showthread.php?t=62131

    Unfortunately after reading it, I find it raises more questions rather than clarifying the issues.

    I have used Easeus Home Edition for Vista32, and Vista own tool for the 64 version. All in all I prefer to keep my HD in all my machines unpartitioned as it makes it easier to restore images and safer as partitions could theoretically get infected as a result from being in the same drive.
     
  9. siberianwolf

    siberianwolf Registered Member

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    after i've seen this thread you mentioned, just like you said, it baffled me, too.
    so, still things ain't clear.
    thanks.
     
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