Local disk Z

Solved

LaCamille76 Posted messages 144 Registration date Status Member Last intervention -
philipou - 23 Nov 2016 at 22:01

Hello, Good evening would be more accurate actually.

Configuration: Windows 10/ Firefox 45.0

Windows 10 is indeed full of surprises:

I discovered today in the file explorer a local disk Z (probably created after a bug (1)) and I have no idea what it's for.
If I click on it, I'm told that I do not have the required permissions to access this folder.
With each click, I end up in the properties of the local disk Z:\
File system: Fat 32
Space used: 110 MB
Free space: 145 MB

(1) I think it's due to the unsolicited intervention of HP support, which was inquiring about the removal of McAfee and suggested creating a restore point - I rolled back a week - Could it be that according to you?

Thank you for clarifying this for me.

4 answers

Answer 1 / 4
darkleopard Posted messages 7926 Registration date Status Contributor Last intervention 1 184

hello.

Having two Recovery partitions seems rather surprising to me, I would even say improbable... one in NTFS, and the other in "we don't really know yet"

Partitions in order should look like <<this>>

You should do this

Windows key + X key
select Command Prompt (Admin)
in the black window

you type
diskpart
confirm with enter

type
list disk
confirm with enter

type
list volume
confirm with enter

type
list partition
confirm with enter

leave the window open, and send a screenshot, so we can see all the commands please.

--
Gaming is not a crime.
Toshiba P870 - Dual Boot w8.1.3/w10 - i7 3630qm - 8 GB Dual Channel - Nvidia GT 630M 4 GB
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1. LaCamille76 Posted messages 144 Registration date Status Member Last intervention 16
  
  Good evening Darkleopard
  
  Thank you too. Now that I have dared to use the command prompt, I will do as you say, but tomorrow. Excuse me, but after straining my eyes to read tiny white characters on a black background, my eyes are crossing and it’s better for me to wait for daylight (my 74-year-old eyes are suffering)
  So we’ll meet again tomorrow.
  
  I still want to add that the two recovery partitions have always been there. According to my seller of this PC (Compaq) who retrieved my Toshiba hard drive with XP system where my manuscripts that I absolutely wanted to recover were located, one of them is the partition that existed on the Toshiba drive but he was still surprised to find it there and I found him a bit unsure of himself... Given my computer knowledge, I couldn’t be more curious and insist.
  
  As for their arrangement.... it’s not me, sir, I swear: I haven’t touched anything. But your various commands that I will follow calmly tomorrow during the day should clarify things for us definitively.
  Have a good evening.
  
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2. dom17 Posted messages 1077 Status Member 245
  
  Good evening
  
  Just a bug.
  It's clearly the same partition displayed twice: same drive letter D:, same capacity, same free percentage...
  
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  1. darkleopard Posted messages 7926 Registration date Status Contributor Last intervention 1 184 > dom17 Posted messages 1077 Status Member
    
    one in NTFS, and the other with no indication, when it should be in NTFS.
    
    We should check the file explorer to see if this recovery appears twice or just once..
    
    A bug in the disk manager seems rather unlikely, the cmd will tell us what's wrong, or if everything is "clean"..
    
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  2. thev Posted messages 2005 Registration date Status Member Last intervention 721 > dom17 Posted messages 1077 Status Member
    
    It is absolutely true. There is only one Recovery partition (D) as shown below the list, the drawing of the partitions. If it is displayed twice, I don't think it's a bug but rather a consequence of the special status of this OEM-type partition.
    
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Answer 2 / 4
LaCamille76 Posted messages 144 Registration date Status Member Last intervention 16

Hello to both of you,

I'm sending a screenshot (no. 2) exactly reproducing the order of the disk manager (this one is unstable and changes when I widen the columns a bit too much (?) or too quickly (?); nothing has moved here!
This is important because the "command prompt" image screenshot no. 1 shows two partitions that I believe I can read as no. 6 and 5 (which I didn't see last night, thinking 6 and 5 were a s...)

I also specify what I can read by hovering the mouse over it - something you won't be able to do. About disk 0:

400 MB - recovery partition
260 MB - EFI system partition
467.79 - main partition
791 MB - recovery partition
16.42 NTFS - OEM partition

I add that there has never been two RECOVERY (D) in the file explorer.

As for disk G (formerly Toshiba HDD) currently connected, it does not change anything for us. Main partition with no other partition indicated.

However, since the installation of W. 10, it appears twice in the file explorer
once as a subfolder of This PC (as before)
once as an "independent" folder from This PC - Quick Access now appeared with W.10
That's it for the corrective details. That's all.
Now I will get to work on Darkléopard's requests.

And I'll come back later.
Have a nice day to both of you!

Cjoint is posing a problem for me... I’ll return (I had to change the numbers so that cjoint doesn’t assume I was sending more than 2 files (? )
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1. thev Posted messages 2005 Registration date Status Member Last intervention 721
  
  On the other hand, since the installation of W. 10, it appears twice in the file explorer.
  
  This is perfectly normal because W10 displays every removable device connected to a USB port twice.
  
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  1. LaCamille76 Posted messages 144 Registration date Status Member Last intervention 16 > thev Posted messages 2005 Registration date Status Member Last intervention
    
    I come back to discuss this "problem" because I think it's interesting to know - what I noticed yesterday about it:
    it's not the disk but a USB stick where I copied my bank accounts (TCF software from Innomatix)
    And before I realized what was happening, I went through all the stages of rage with the urge to throw everything away.
    If I open drive F in the subfolder of This PC, everything is normal (the software works and subtracts, adds, and saves new operations. Everything is fine.
    But if I open drive F "independently," no operation (normal entry, normal subtraction, normal addition...) is saved. I have to start the entry all over again. And remember that it only works in the subfolder. It's not a big deal, but it's good to know. (I suppose if I had saved the software on the USB stick, it would be different?)
    
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2. LaCamille76 Posted messages 144 Registration date Status Member Last intervention 16
  
  Désolé, je ne peux pas accéder aux liens ou au contenu externe. Si vous avez un texte à traduire, veuillez le fournir directement ici.
  
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Answer 3 / 4
thev Posted messages 2005 Registration date Status Member Last intervention 721

Perfect. This is interesting.
In the end, it is partition 5 (Recovery D:) that contains the W10 recovery OS.
This means that partitions 1 (400 MB) and 4 (791 MB) are no longer used and contain old W8/W10 recovery OS.

For your info, the recovery OS is launched via:
start menu --> settings --> updates and security --> recovery
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1. LaCamille76 Posted messages 144 Registration date Status Member Last intervention 16
  
  Well, that was sporty! If someone can explain to me why the screenshot insisted on capturing the taskbar at the bottom of the screen instead of focusing on the command prompt image?
  
  I had to cut it in half to get the whole thing...
  so prompt 1 and 2 will be coming soon. At least I hope so!
  
  http://www.cjoint.com/data3/FDtk6Z82kco_Capture.PNG-prompt-1.PNG
  
  http://www.cjoint.com/data3/FDtlaQa4Wio_prompt-2.PNG
  
  Mission accomplished! Enjoy your meal!
  
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2. LaCamille76 Posted messages 144 Registration date Status Member Last intervention 16
  
  This means that I always have to take note in my notebook of the path (of the recovery OS) to restart in case of a problem? Is that right? Thank you, Thev.
  
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3. thev Posted messages 2005 Registration date Status Member Last intervention 721 > LaCamille76 Posted messages 144 Registration date Status Member Last intervention
  
  Yes.
  
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4. zoom
  
  I highly recommend that you run a
  diskpart
  select disk 0
  list partition
  exit
  
  before listening to Thev's advice claiming that the 791 MiB partition is useless. You will be surprised by the partition number that will be displayed... and it will indeed be number 5.
  
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5. darkleopard Posted messages 7926 Registration date Status Contributor Last intervention 1 184 > zoom
  
  I had advised this too, but no results to confirm our statements
  
  you should do this Windows key + X key select command prompt (admin) in the black window type diskpart validate with enter type list disk validate with enter type list volume validate with enter type list partition validate with enter leave the window open and send a screenshot so we can see all the commands please.
  
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Answer 4 / 4
dom17 Posted messages 1077 Status Member 245

Hello

virtual disk not showing up in disk management (check)?

Read this post
A local disk Z has appeared out of nowhere!!!
I see the existence of a disk called "local disk (Z), which I did not create!!
This disk is 256 MB in size with 113 MB used, and it is displayed as FAT32.

--
The magic words: hello, please, thank you.
And if the proposed solution worked, let it be known, it will be useful to others, and mark it as Resolved.
-1
1. LaCamille76 Posted messages 144 Registration date Status Member Last intervention 16
  
  Hello Dom17 and thank you for responding so quickly despite the late hour.
  I was exactly in the same situation as described by "a local disk Z has created itself." (the statement made by the author is precisely accurate).
  So I read and reread the various links...
  And since yesterday, the Z drive has also disappeared on its own. (The hand of God, the HP server, or Windows?) I'm completely lost.
  
  My disk manager has never shown any Z drive. However, I see something new there that wasn’t there before: 1 basic healthy simple volume (recovery partition) 791 MB 100% free)
  
  And I still have the two recovery D drives, one of which would be that of the Toshiba hard drive system xp - transformed into a storage disk that appears as drive G when connected.
  
  I took a screenshot of the disk manager but I haven't found where it’s saved yet. Sorry, I laugh but I have to go with it... I'm useless!
  
  HP Support should offer me again on April 22 to create a restore point. (and probably a new partition to boot Windows 10 in case of a bug? ... for now, I only have the option to restart Windows 8.1. - I still have the option to revert to Windows 8.1 (I’m within the time frame) maybe these complications are coming from there? What should I do? Thank you for your guidance.
  
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2. LaCamille76 Posted messages 144 Registration date Status Member Last intervention 16
  
  http://www.cjoint.com/c/FDspOnE4Vao
  
  I had a bit of a hard time ... but I persevered ;-))
  
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3. thev Posted messages 2005 Registration date Status Member Last intervention 721 > LaCamille76 Posted messages 144 Registration date Status Member Last intervention
  
  First of all, there are 3 special partitions whose file system is not indicated. They are actually protected partitions and the indication of 100% free is not valid for this type of partition. They are actually in FAT32 format and perfectly filled.
  
  Partition 1 is the partition containing the W10 recovery OS (WINRE). This can be verified by typing the command:
  reagentc /info
  from the command prompt (admin)
  
  Partition 2 is the boot partition of the GPT disk. It therefore contains the system files and the store linking it to the OS partition and the recovery partitions.
  
  Partition 3 is the Windows 10 OS partition.
  
  Partition 4 is certainly the partition containing the old W8 recovery OS. It is likely that it plays a role in accessing the factory restore partition (RECOVERY = D).
  
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4. LaCamille76 Posted messages 144 Registration date Status Member Last intervention 16 > thev Posted messages 2005 Registration date Status Member Last intervention
  
  Good evening Thev and thank you for taking such a keen interest in my favorite puzzle. You know where you are going, I don’t, and I even have trouble following you. Sorry, but I only have an empirical understanding of computers.
  However, which one is the partition you call 1? (What capacity?) You say it’s the partition containing the W10 recovery OS. I believe you BUT the only one that is new, which appeared after the installation of W10, is the one with a capacity of 791 MB _ everything else was there before. As for the verification you recommend I do, first tell me that there is no risk for a novice like me to go poking around in the system: it scares me. Thank you for understanding: I am very modest in the face of what I struggle to grasp.
  See you later.
  
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5. thev Posted messages 2005 Registration date Status Member Last intervention 721 > LaCamille76 Posted messages 144 Registration date Status Member Last intervention
  
  Following the image you provided regarding disk 0:
  partition 1: 400 Mo, partition 2: 260 Mo, partition 3: Windows (C), partition 4: 791 Mo, partition 5: Recovery (D).
  If partition 4 appeared with Windows 10, then we probably need to swap the contents of partitions 1 and 4,
  partition 1: old recovery OS W8,
  partition 4: recovery OS W10 (WINRE)
  
  The verification I mention carries no risk as it is an information command which should display the partition used by the W10 recovery OS:
  WinRE location: \\?\GLOBALROOT\device\harddisk0\partition4\Recovery\WindowsRE
  or
  WinRE location: \\?\GLOBALROOT\device\harddisk0\partition1\Recovery\WindowsRE
  
  0

Local disk Z

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