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Identifying partitions on HP Pavilion 15 HDD for SSD image

  1. #1


    Posts : 39
    Windows 8.1

    Identifying partitions on HP Pavilion 15 HDD for SSD image


    Interested in identifying the different partitions and their importance to the system on this new HP Pavilion 15 in advance of moving OS to an SSD. Should it be tidied up before moving, what is crucial, and how many partitions should there be, and how easily is the OS and apps (no data - all in cloud) transferrable via Recovery USB or Macriam Reflect to an SSD (120gb).

    See screen shot of Disk Management below, listing:

    A 650MB partition, untitled, status: Healthy (Recovery Partition). which appears to be 100% free.

    A 260 MB partition, also untitled, listed as Healthy (EFI System partition), which appears to be 100% free

    The Recovery Drive (D) (Healthy OEM Partition), 21.62GB; (only 2.40GB used) (This appears to be listed in Disk Management twice for some reason)

    and Windows (C) listed as Healthy (Boot, Page File, Crash Dump, Primary Partition), at 1374.63 GB (only 77gb used)

    Click image for larger version

      My System SpecsSystem Spec

  2. #2


    Central IL
    Posts : 3,468
    Linux Mint 17.2


    All partitions have to stay. Otherwise if you remove any, you screw up the OS.
      My System SpecsSystem Spec

  3. #3


    Penn's Forest
    Posts : 216
    Win8.1 Pro | Win10TP Pro - boot to VHD


    A 650MB partition, untitled, status: Healthy (Recovery Partition). which appears to be 100% free.
    This is where Win8 keeps it's Recovery tools (WINRE) - it is important.

    A 260 MB partition, also untitled, listed as Healthy (EFI System partition), which appears to be 100% free
    This is your EFI boot partition - it is important.

    The Recovery Drive (D) (Healthy OEM Partition), 21.62GB; (only 2.40GB used)
    This is the HP Recovery partition - it is important. OEMs don't ship discs, they put the Install 'media' on your drive. You can use the HP Recovery utility to reinstall to factory settings. I have not created install media for Win8, but on many other Windows version (HP machines) you could create a set of discs in case of catastrophe. Look on the HP site for your machine (maybe there's bookmarks or look in Start for HP help/manuals/ assistant / home page..... poke around and see what the process is for HP and Win8. I helped another member with and Acer and discovered that Acer only discusses creating recovery media on a thumb drive.
    Tip: if you fill in the machines specs on your EightForums profile, members can help you better.

    and Windows (C) listed as Healthy (Boot, Page File, Crash Dump, Primary Partition), at 1374.63 GB (only 77gb used)
    This one you know . Win8 only takes up about 20 GB on my machine, but I did a clean install to get rid of the HP bloat.
    You must have some other things installed on C: to get to 77 GB (I can't imagine HP bloats system by 57GB)

    I don't know why D: is listed twice. hmmmmm

    If you're wondering "Can I get some of this space back?"

    First look at Disk management again, but change the View -> top to disks
    I'll bet the right most column says GPT. If it does, great
    If it say MBR -it will take some work to reclaim the space from C: - but I'll go on the assumption that the disks list will show GPT

    Right click on C: in the bottom pane
    select Shrink
    Let it calculate and see how much Windows thinks it can shrink that partition. Write it down.
    I don't know how you plan on using the machine, but there is a lot of space available.

    200 Gb for C: is plenty, especially if your store your data on other partitions

    Just for kicks, try shrinking C: by 1024002 (100 GB) - if the calculation gives you that much.

    IF you want to think about your partitions, that's a good idea - you're limited by the number of characters in the alphabet (if the disk is GPT)

    C: has 1374 - 77 GB = 1297 GB to play with. That's about four 340 GB partitions if you split is even.

    How you partition depends on how you use the space. Large video files require large spaces, you don't want to get into the position of trying to save a video that's 50 GB and there's only 30-40 GB on each partition. Plenty of space, just not in one place. Smaller files ae easier to find a partition with room to spare.

    My Disk Management shows MBR - I always have to carefully plan my portioning (I did have the large video save issue a long time ago). You can only have 4 partitions on a MBR initialized disk (an extended partition solves that issue - if your disk is GPT, no problem ... if it's MBR do NOT try to shrink C: and create a new partition)

    Click image for larger version
      My System SpecsSystem Spec

  4. #4


    Posts : 39
    Windows 8.1


    This is very interesting. Just to check - if I click on 'shrink', will that do anything irreversible? I haven't attempted to change these things before. But I'm interested to see what the calculation is. I have Onedrive, Googledrive, and Dropbox storage linked to 'C:' which might explain the size of the used space. I would remove this and put them onto the old HDD as an external disk for storage when I install the SSD (for OS and apps only). I haven't taken off much of the HP bloatware - not sure yet which is useful or not.
    I've had the impression from reading around that SSD's are better off without partitions (something about avoiding the alignment problem), but I may have misunderstood this. Would there be any advantage in lumping the smaller WinRe and UEFI partitions into C: before putting C onto the SSD?
    I hear it's better to keep the SSD at only 75% full - so I'd keep it light with OS and apps -get rid of the Recovery Partition D: also as I have Recovery USB provided by the retailer.
    The HDD is a different matter- does it make a HDD of this large size easier to use to divide it into partitions? And perhaps it makes sense to have a partition for Googledrive, Dropbox and Onedrive respectively? Or better to divide by category of file - photos, video, documents, ppt, etc.
    Thanks for any advice for a novice! Very interesting to learn. I will try the shrinking test if I know i'm not doing anything permanent.
      My System SpecsSystem Spec

  5. #5


    Posts : 2,690
    Windows 3.1 > Windows 10


    get rid of the Recovery Partition D: also as I have Recovery USB provided by the retailer.
    That media is not system recovery - it is windows media..

    Go to control panel - recovery - create a recovery drive.. That is your factory recovery image - and it is not the same as what you where provided..

    then do your testing..

    Also with the recovery media, you just created, we can edit one file (due to size change)and write the factory image to your SSD

    edit: also rereading your first post the recovery partition has 2.4GB free out of 20GB and that size will change down to about 9GB after a BMR on the SSD
      My System SpecsSystem Spec

  6. #6


    Posts : 2,690
    Windows 3.1 > Windows 10


    here is mine - old 1TB drive (disk 0) now used as storage and new 120GB SSD (disk 1) with windows
    Attachment 57498

    And I still have the factory recovery option
      My System SpecsSystem Spec

  7. #7


    Posts : 39
    Windows 8.1


    Very interesting - what is the System partition on Disk 0?
    And the partitions on the SSD - is that WinRe, UEFI, and OS - and the recovery partition? and does it harm the SSD to have partitions (I thought cloning partitions might create an alignment problem - how do you fix that).
    So it is possible to move OS from a much larger HDD to a 120gb SSD - no squeezing problem
    I need to get writeable DVDs to make new recovery disks. But I think my USB is the full works - they charged enough for it (without giving me an option). The contents of my Recovery USB pasted below - the first screen and then the message it puts up when i click on 'Recovery'
    Attached Thumbnails Attached Thumbnails USB HP Recovery USB.PNG   HP Recovery USB.PNG  
      My System SpecsSystem Spec

  8. #8


    Posts : 2,690
    Windows 3.1 > Windows 10


    on disk o that is just my label

    and disk 1 = is the proper alignment of a UEFI-GPT disk
      My System SpecsSystem Spec

  9. #9


    Posts : 2,690
    Windows 3.1 > Windows 10


    I would still opt for the control panel method (it creates the media on usb / not dvd) - as that is a lots of split files on that HP stick..

    better to have two options - then none..

    I know the control panel method, files and setting
      My System SpecsSystem Spec

  10. #10


    Posts : 39
    Windows 8.1


    Quote Originally Posted by KYHI View Post
    on disk o that is just my label

    and disk 1 = is the proper alignment of a UEFI-GPT disk
    Did you clone the OS and other partitions to the SSD? Did you have to use Disk Part to align the partitions to be divisible by 4 - I hear that is necessary.

    Or is a Fresh re-install the easier way? Is this easy with Windows 8.1 OEM purchased a month ago - not sure where to get genuine Windows Key, no sticker.

    I ask because I'm told the HP Recovery USB doesn't work with an SSD under 160gb, which is a problem as I have ordered a Samsung 120gb. May have to re-think and invest more or go with clean re-install.

    It is a good idea to create another recovery disc to back up the retailers. Theirs is a USB -- perhaps I will go with DVDs.
      My System SpecsSystem Spec

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Identifying partitions on HP Pavilion 15 HDD for SSD image
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