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  1.    02 Jan 2017 #1
    Join Date : Nov 2016
    Tucson, AZ
    Posts : 123
    Wndows 10

    What is local disk Z?


    I see drive C and drive D, but don't know what local disk Z is . It's 256 mb in size, and about half full. I can't open it to see what's on there since I get a message, "permission denied." It's been there for a long time, but I'm just now getting curious.
      My ComputerSystem Spec
  2.    02 Jan 2017 #2
    Join Date : Jun 2015
    Posts : 552
    Microsoft Windows 10 Home 64-bit

    I've seen this also, I think you'll find it's a partition of the main "C drive" that shouldn't show. A restart usually gets rid of it for me.
    Hope this helps.
      My ComputerSystem Spec
  3.    02 Jan 2017 #3
    Join Date : Nov 2016
    Tucson, AZ
    Posts : 123
    Wndows 10
    Thread Starter

    Quote Originally Posted by thegeriatric View Post
    I've seen this also, I think you'll find it's a partition of the main "C drive" that shouldn't show. A restart usually gets rid of it for me.
    Hope this helps.
    I believe you're right, except in my case restarting doesn't change anything. A little more investigating seems to confirm it what you said. Thanks.
      My ComputerSystem Spec
  4.    02 Jan 2017 #4
    Join Date : Jul 2015
    Posts : 834
    Windows 10 Home

    {by me, from a related thread} Do not delete it, it's necessary for the computer to start. I have hidden system partitions appear as a Z drive too, usually after doing a virtual drive mount. Here's how to remove the letter from the drive to keep it from appearing under This PC (see screenshot of command prompts) window) -

    Win+X/Command Prompt (Admin) {hit enter after each following command, observing spaces and letting each command finish}
    diskpart
    list volume
    select volume #
    {whichever # is assigned to Z, example is 4, as if that appeared next to Z; eg- 0 to remove E)
    remove letter=Z
    list volume
    {not shown, but run to verify letter was removed}


      My ComputerSystem Spec
  5.    05 Jan 2017 #5
    Join Date : Nov 2016
    Tucson, AZ
    Posts : 123
    Wndows 10
    Thread Starter

    Thanks. Looks easy enough.
      My ComputerSystem Spec
  6.    01 Jun 2017 #6
    Join Date : Jun 2017
    Posts : 2
    Win 10

    I have just seen this local Z disc in my comp. for last few days.
    I've scanned it by Malwarebytes.
    It found 4 threats in Heuristic scan.
    Log file below:

    File: 4PUP.Optional.NewTabTV, C:\USERS\\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\LOCAL STORAGE\http_tr.newtabtv.com_0.localstorage, Quarantined, [2593], [359416],1.0.2064PUP.Optional.NewTabTV, C:\USERS\\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\LOCAL STORAGE\http_tr.newtabtv.com_0.localstorage-journal, Quarantined, [2593], [359416],1.0.2064PUP.Optional.NewTabTV, C:\USERS\\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\LOCAL STORAGE\http_search.newtabtvsearch.com_0.localstorage, Quarantined, [2593], [359410],1.0.2064PUP.Optional.NewTabTV, C:\USERS\\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\LOCAL STORAGE\http_search.newtabtvsearch.com_0.localstorage-journal, Quarantined, [2593], [359410],1.0.2064Physical Sector: 0(No malicious items detected)(end)

    Restart.

    And then local Z disc disappears.

    )
      My ComputerSystem Spec
  7.    01 Jun 2017 #7
    Join Date : Mar 2016
    India
    Posts : 139
    Windows 7 Ultimate 32bit

    ^ It is more likely that the HP Support Assistant in your HP Pavilion is creating the Z drive. See Mysterious drive Z: appears!
      My ComputerSystem Spec
  8.    01 Jun 2017 #8
    Join Date : Nov 2013
    Toronto
    Posts : 4,617
    Win 10 Pro x64

    At that size, it's clearly a system file. Tampering with it could make your Windows unbootable.


    Edit:

    Ooops, sorry. Old thread. Someone replied a few minutes before I did. I thought it's new. Haha...
    Attached Thumbnails Attached Thumbnails doh[1].gif  
      My ComputerSystem Spec
  9.    02 Jun 2017 #9
    Join Date : Jun 2017
    Posts : 2
    Win 10

    What is local disk Z?
      My ComputerSystem Spec
  10.    02 Jun 2017 #10
    Join Date : Feb 2017
    Home
    Posts : 465
    Windows 10 Home x64, V1709 (16299.19)

    Drive Z comes and goes on Gayle's HP laptop. Shows up some time after one of the major updates, hangs around a while and then goes away. All on it's own.
      My ComputersSystem Spec

 
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