Solved Why is there a Z: drive listed after partitioning my SSD?


Try3 said:
So that confirms that Z:\ is a partition of the main OS disk.
I think it's the EFI System partition.

Somebody else posted that they had partitioned their disk using the EaseUS Partition manager and they ended up with a Z:\ drive.
Did you also use this?

I do not know how you are going to get out of this.

Denis
Click to expand...
Its loaded on this machine so yes, pretty sure I used EaseUS Partition Manager.
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Scan Pre Built Intel Core i5 12400F
    CPU
    Intel Core i5-12400F
    Motherboard
    Asus Prime H610M-K D4
    Memory
    16GB DDR4
    Graphics Card(s)
    NVIDIA GeForce GT 730
    Hard Drives
    1TB Samsung 980 NVMe M.2 SSD
zbook said:
Please run: diskpar info > post a share link


Batch files for use in BSOD debugging - Windows 10 Help Forums

Information This thread is for use by the BSOD team to store batch files that can be used to collect additional data, fix settings or anything else that is useful in debugging BSOD problems in Windows 10. The way I see it working is the first
www.tenforums.com www.tenforums.com


Batch files for use in BSOD debugging - Windows 10 Help Forums

Information This thread is for use by the BSOD team to store batch files that can be used to collect additional data, fix settings or anything else that is useful in debugging BSOD problems in Windows 10. The way I see it working is the first
www.tenforums.com www.tenforums.com
Click to expand...
Link to diskpar info
www.dropbox.com

DiskParInfo.log

Shared with Dropbox
www.dropbox.com www.dropbox.com
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Scan Pre Built Intel Core i5 12400F
    CPU
    Intel Core i5-12400F
    Motherboard
    Asus Prime H610M-K D4
    Memory
    16GB DDR4
    Graphics Card(s)
    NVIDIA GeForce GT 730
    Hard Drives
    1TB Samsung 980 NVMe M.2 SSD
When available please post results from post#19.
 

My Computer

System One

  • OS
    Windows 10
    Computer type
    Laptop
    Manufacturer/Model
    HP
    CPU
    Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz
    Motherboard
    Product : 190A Version : KBC Version 94.56
    Memory
    16 GB Total: Manufacturer : Samsung MemoryType : DDR3 FormFactor : SODIMM Capacity : 8GB Speed : 1600
    Graphics Card(s)
    NVIDIA Quadro K3100M; Intel(R) HD Graphics 4600
    Sound Card
    IDT High Definition Audio CODEC; PNP Device ID HDAUDIO\FUNC_01&VEN_111D&DEV_76E0
    Hard Drives
    Model Hitachi HTS727575A9E364
    Antivirus
    Microsoft Defender
    Other Info
    Mobile Workstation
Try3 said:
Denis
Click to expand...

Try3 said:
So that confirms that Z:\ is a partition of the main OS disk.
I think it's the EFI System partition.

Somebody else posted that they had partitioned their disk using the EaseUS Partition manager and they ended up with a Z:\ drive.
Did you also use this?

I do not know how you are going to get out of this.

Denis
Click to expand...

@Try3,

Member Gort provided a solution for getting rid of the spooky drive letter Z in Ten forums here Unknown drive appearing in File Explorer, "SYSTEM (Z:)" - Windows 10 Help Forums

You may be able to decipher it better and instruct the OP in gettng rid of it. So I am passing the buck to you :-) .
 

My Computers

System One System Two

  • OS
    Windows 11 Pro Version:24H2 OS Build: 26100.2894
    Computer type
    PC/Desktop
    Manufacturer/Model
    Beelink Mini PC Model: SEi12
    CPU
    12th Gen Intel core i5-1235U(Alder
    Motherboard
    SEi (manufactured by AZW)
    Memory
    16*2 (32 GB) DDR 4-3200(1600MHz) Crucial Technology
    Graphics Card(s)
    Intel Iris Xe Graphics (Internal)
    Sound Card
    Internal
    Monitor(s) Displays
    BenQ GW2283
    Screen Resolution
    1920*1080
    Hard Drives
    500GB NVME (Kingston SNV2S500G)
    1TB (Crucial CT1000BX500SSD1)
    PSU
    Power Brick 19V-6.32A , 120.08W
    Keyboard
    Dell KB3322Wi (Wireless)
    Mouse
    Dell WM118t (Wireless)
    Internet Speed
    4G/5G
    Browser
    MS Edge, Chrome
    Antivirus
    Malwarebytes Premium - Subscription
  • Operating System
    Windows 11 Home Version 24H2 Build 26100. 2894
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Inspiron 3280 AIO 22"
    CPU
    Intel Core i3 8145U
    Motherboard
    Dell inc. 027W48
    Memory
    Intel Optane 16GB module + DDR 4 16GB (Optane disabled.)
    Graphics card(s)
    Intel UHD Graphics 620
    Sound Card
    Internal
    Monitor(s) Displays
    Dell Monitor 22"
    Screen Resolution
    1920x1080
    Hard Drives
    Crucial CT1000BX500SSD1 ; 1000,2 GB
    PSU
    Power Brick
    Case
    All-in one
    Mouse
    Dell Wireless KM 636
    Keyboard
    Dell Wireless KM636
    Internet Speed
    4G
    Browser
    Edge, Chrome
    Antivirus
    Malwarebytes
    Other Info
    Upgraded from Windows 10 Home to Windows 11 Home on 28 Oct 2023

My Computers

System One System Two

  • OS
    Win 11 Home ♦♦♦26100.2894 ♦♦♦♦♦♦♦24H2 ♦♦♦non-Insider
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 4702)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
    Graphics Card(s)
    EVGA RTX 2070 (08G-P4-2171-KR)
    Sound Card
    Realtek ALC1220P / ALC S1220A
    Monitor(s) Displays
    Dell U3011 30"
    Screen Resolution
    2560 x 1600
    Hard Drives
    2x Samsung 860 EVO 500GB,
    WD 4TB Black FZBX - SATA III,
    WD 8TB Black FZBX - SATA III,
    DRW-24B1ST CD/DVD Burner
    PSU
    PC Power & Cooling 750W Quad EPS12V
    Case
    Cooler Master ATCS 840 Tower
    Cooling
    CM Hyper 212 EVO (push/pull)
    Keyboard
    Ducky DK9008 Shine II Blue LED
    Mouse
    Logitech Optical M-100
    Internet Speed
    300/300
    Browser
    Firefox (latest)
    Antivirus
    Bitdefender Internet Security
    Other Info
    Speakers: Klipsch Pro Media 2.1
  • Operating System
    Windows XP Pro 32bit w/SP3
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
    Motherboard
    ASUS M2N32-SLI Deluxe Wireless Edition
    Memory
    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
    Graphics card(s)
    EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Sound Card
    Onboard
    Monitor(s) Displays
    ViewSonic G90FB Black 19" Professional (CRT)
    Screen Resolution
    up to 2048 x 1536
    Hard Drives
    WD 36GB 10,000rpm Raptor SATA
    Seagate 80GB 7200rpm SATA
    Lite-On LTR-52246S CD/RW
    Lite-On LH-18A1P CD/DVD Burner
    PSU
    PC Power & Cooling Silencer 750 Quad EPS12V
    Case
    Generic Beige case, 80mm fans
    Cooling
    ZALMAN 9500A 92mm CPU Cooler
    Mouse
    Logitech Optical M-BT96a
    Keyboard
    Logitech Classic Keybooard 200
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 13 years?
jumanji said:
Member Gort provided a solution for getting rid of the spooky drive letter Z
Click to expand...
Somebody else has already posted instructions for the DiskPart method in this thread and that is what I think zbook is now trying to guide the OP through.

Denis
 

My Computer

System One

  • OS
    Windows 11 Home x64 Version 23H2 Build 22631.3447
This is the information on Z:

Partition 1
Volume 2
System partition
File system FAT32
Size 499 MB



On a GPT partition the EFI or system partition is typically viewable in disk management and does not have a drive letter.

A letter is often assigned temporarily during troubleshooting.

The drive letter can be removed.



Code: 
Partition 1
Type    : c12a7328-f81f-11d2-ba4b-00a0c93ec93b
Hidden  : Yes
Required: No
Attrib  : 0X8000000000000000
Offset in Bytes: 1048576

  Volume ###  Ltr  Label        Fs     Type        Size     Status     Info
  ----------  ---  -----------  -----  ----------  -------  ---------  --------
* Volume 2     Z   BOOT         FAT32  Partition    499 MB  Healthy    System
 
Last edited:

My Computer

System One

  • OS
    Windows 10
    Computer type
    Laptop
    Manufacturer/Model
    HP
    CPU
    Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz
    Motherboard
    Product : 190A Version : KBC Version 94.56
    Memory
    16 GB Total: Manufacturer : Samsung MemoryType : DDR3 FormFactor : SODIMM Capacity : 8GB Speed : 1600
    Graphics Card(s)
    NVIDIA Quadro K3100M; Intel(R) HD Graphics 4600
    Sound Card
    IDT High Definition Audio CODEC; PNP Device ID HDAUDIO\FUNC_01&VEN_111D&DEV_76E0
    Hard Drives
    Model Hitachi HTS727575A9E364
    Antivirus
    Microsoft Defender
    Other Info
    Mobile Workstation
BobOmb posted the applicable command to remove drive letter Z:.

The mountvol command usually works when diskpart remove or disk management fail to remove the drive letter.
 

My Computer

System One

  • OS
    Windows 10
    Computer type
    Laptop
    Manufacturer/Model
    HP
    CPU
    Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz
    Motherboard
    Product : 190A Version : KBC Version 94.56
    Memory
    16 GB Total: Manufacturer : Samsung MemoryType : DDR3 FormFactor : SODIMM Capacity : 8GB Speed : 1600
    Graphics Card(s)
    NVIDIA Quadro K3100M; Intel(R) HD Graphics 4600
    Sound Card
    IDT High Definition Audio CODEC; PNP Device ID HDAUDIO\FUNC_01&VEN_111D&DEV_76E0
    Hard Drives
    Model Hitachi HTS727575A9E364
    Antivirus
    Microsoft Defender
    Other Info
    Mobile Workstation
I’ve posted the solution which worked for me but the op hasn’t replied stating whether they’ve tried it.
 

My Computer

System One

  • OS
    Windows 11 Pro 64bit
    Computer type
    Laptop
    Manufacturer/Model
    PC Specialist Optimus VII V17-960 Gaming Laptop.
    CPU
    6th Gen Intel Core i7-6700HQ Quad Core processor.
    Memory
    16GB HyperX IMPACT 1600MHz SODIMM DDR3 (2 x 8GB)
    Graphics Card(s)
    NVIDIA® GeForce® GTX 960M - 2.0GB DDR5 Video RAM - DirectX® 12
    Sound Card
    Intel 2 Channel High Def. Audio + SoundBlaster™ Cinema 2 & Realtek
    Monitor(s) Displays
    Optimus Series: 17.3" Matte Full HD IPS LED Widescreen (1920x1080)
    Screen Resolution
    Full HD IPS display (1920 x 1080).
    Hard Drives
    4TB SSD (internal).
    1x 1TB & 1x 5TB external HDDs.
    Cooling
    STANDARD THERMAL PASTE FOR SUFFICIENT COOLING
    Keyboard
    Logitech K800 wireless keyboard
    Mouse
    Logitech M705 wireless mouse
    Internet Speed
    Upto 100Mbps
    Browser
    Edge.
    Antivirus
    Windows Defender & MalwareBytes pro.
Bastet said:
I’ve posted the solution which worked for me but the op hasn’t replied stating whether they’ve tried it.
Click to expand...
If that was post#6, then post#7 said dont try anything yet, so I didnt try it.

Bit busy with other things at the mment, but will come back to this later.
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Scan Pre Built Intel Core i5 12400F
    CPU
    Intel Core i5-12400F
    Motherboard
    Asus Prime H610M-K D4
    Memory
    16GB DDR4
    Graphics Card(s)
    NVIDIA GeForce GT 730
    Hard Drives
    1TB Samsung 980 NVMe M.2 SSD
Keithjr said:
If that was post#6, then post#7 said dont try anything yet, so I didnt try it.

Bit busy with other things at the mment, but will come back to this later.
Click to expand...
Yes it was my post. The fix worked for me after using EaseUS.
 

My Computer

System One

  • OS
    Windows 11 Pro 64bit
    Computer type
    Laptop
    Manufacturer/Model
    PC Specialist Optimus VII V17-960 Gaming Laptop.
    CPU
    6th Gen Intel Core i7-6700HQ Quad Core processor.
    Memory
    16GB HyperX IMPACT 1600MHz SODIMM DDR3 (2 x 8GB)
    Graphics Card(s)
    NVIDIA® GeForce® GTX 960M - 2.0GB DDR5 Video RAM - DirectX® 12
    Sound Card
    Intel 2 Channel High Def. Audio + SoundBlaster™ Cinema 2 & Realtek
    Monitor(s) Displays
    Optimus Series: 17.3" Matte Full HD IPS LED Widescreen (1920x1080)
    Screen Resolution
    Full HD IPS display (1920 x 1080).
    Hard Drives
    4TB SSD (internal).
    1x 1TB & 1x 5TB external HDDs.
    Cooling
    STANDARD THERMAL PASTE FOR SUFFICIENT COOLING
    Keyboard
    Logitech K800 wireless keyboard
    Mouse
    Logitech M705 wireless mouse
    Internet Speed
    Upto 100Mbps
    Browser
    Edge.
    Antivirus
    Windows Defender & MalwareBytes pro.
Bastet said:
I’ve posted the solution which worked for me but the op hasn’t replied stating whether they’ve tried it.
Click to expand...
Bastet,

I went looking for this solution, (afaik it was post#6), with the intention of trying it, but it seems to have been removed. :(
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Scan Pre Built Intel Core i5 12400F
    CPU
    Intel Core i5-12400F
    Motherboard
    Asus Prime H610M-K D4
    Memory
    16GB DDR4
    Graphics Card(s)
    NVIDIA GeForce GT 730
    Hard Drives
    1TB Samsung 980 NVMe M.2 SSD
I still have the issue , unresolved.
Can someone please explain why one of the solutions has dissappeared.
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Scan Pre Built Intel Core i5 12400F
    CPU
    Intel Core i5-12400F
    Motherboard
    Asus Prime H610M-K D4
    Memory
    16GB DDR4
    Graphics Card(s)
    NVIDIA GeForce GT 730
    Hard Drives
    1TB Samsung 980 NVMe M.2 SSD
Keithjr said:
I still have the issue , unresolved.
Can someone please explain why one of the solutions has dissappeared.
Click to expand...
Only the Original Poster, replyer or site manager/s can edit or delete posts. For deleting/editing there is a time limit for the change. Maybe a problem was found with it.
 

My Computers

System One System Two

  • OS
    Win11 Pro RTM
    Computer type
    Laptop
    Manufacturer/Model
    Dell Vostro 3400
    CPU
    Intel Core i5 11th Gen. 2.40GHz
    Memory
    12GB
    Hard Drives
    256GB SSD NVMe M.2
  • Operating System
    Windows 11 Pro RTM x64
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Vostro 5890
    CPU
    Intel Core i5 10th Gen. 2.90GHz
    Memory
    16GB
    Graphics card(s)
    Onboard, no VGA, using a DisplayPort-to-VGA adapter
    Monitor(s) Displays
    24" Dell
    Hard Drives
    512GB SSD NVMe, 4TB Seagate HDD
    Browser
    Firefox, Edge
    Antivirus
    Windows Defender/Microsoft Security

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Scan Pre Built Intel Core i5 12400F
    CPU
    Intel Core i5-12400F
    Motherboard
    Asus Prime H610M-K D4
    Memory
    16GB DDR4
    Graphics Card(s)
    NVIDIA GeForce GT 730
    Hard Drives
    1TB Samsung 980 NVMe M.2 SSD
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