Lost Drive letter

Disk management, right click on drive and my letter is missing from list?

Launch Regedit, navigate to HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices.

Drive letter is in Reg but missing in disk management?

How to get missing drive letter back?

How is this a ccleaner question

Post moved to 'Hardware' section.

To get a missing drive letter back in various circumstances see this:

In particular Section 3. "Drive letter missing in Windows Disk Management".

https://www.diskpart.com/articles/drive-letter-missing-4125.html

I used ccleaner then lost my drive (i) to be exact.

Explorer does not see the (i) drive but its still in the registry?

Have you tried the solution(s) in the link that I posted above?

No's 2 and 5 are specific to that particular partitioning software, but the others are general Windows solutions.

Formatting the drive will not bring back the drive letter.

Connected several USB sticks formatted them and the drive (i) is still missing.

Used the program https://www.easeus.com/

Same no (i) drive?

What is the drive that is missing, a usb stick, an SSD or a hard disk?

Usually 3rd party partitioning software that has more features than what's built into Windows own partition tool have the ability to hide/unhide partitions. In those 3rd party partition tools however you have to remember to click the Apply button though in order for them to follow your requests otherwise they won't do anything.

No one here suggested reformatting/repartitioning the drive at this stage.

The fact that you have done that and still can't see it suggests that it is something in Windows itself that is not seeing/reporting the drive.

Look again at options 1, 3, 4, and 6 in that link I gave.

Those are all fixes for Windows itself, not any 3rd party tool.

what is with an complete restart?

from time to time windows have problems with fastboot and an restart is needed.

i dont know how exactly how it calls in english windows versions...

Control Panel -> Administrative Tools -> Computer Management -> Disk Management (directly under data storage)

rightklick on the usb or what you want -> "change drive letter or path" -> kontextmenu click on "to change or add1345990921_ccleaner_datentrgerverwaltungbenutzen2.jpg.c67880af3960fa916248e9b5b012afbc.jpg"

you can choose your drive letter an it shows you the available driveletters...

6 hours ago, trium said:
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		Control Panel -&gt; Administrative Tools -&gt; Computer Management -&gt; Disk Management (directly under data storage)
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Even easier - in Windows 10 to quickly open Disk Management:

Right-click the Windows icon/logo in the Taskbar, and select Disk Management.

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Something else:

If that drive is in an external/portable USB HDD or SSD (not one pre-made by a drive manufacturer) that you DIY made yourself with a loose drive and placed into an external/portable enclosure try switching to a different enclosure. Sometimes those inexpensive USB HDD/SSD enclosures can have a controller failure. Also sometimes switching a drive from one enclosure to another without re-formatting the drive can cause the drive to fail to be recognized.

11 hours ago, Andavari said:
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		Even easier - in Windows 10 to quickly open Disk Management:
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thanks a lot - i dont can really write about the options in w10 because i dont have w10 yet :-)

18 hours ago, trium said:
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		you can choose your drive letter an it shows you the available driveletters...
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you can also see which drive letters are already in use.

Not sure exactly which Windows OSes that Disk Management may make you reboot in to do this but it can be very annoying in some older versions of Windows. Nirsoft's freeware DriveLetterView can also change drive letter's and I've never seen it require a reboot.

my pic is from w8.1 disk management

oh, no restart after another drive letter assignment but from time to time is a restart needed (since faststart is integrated with w8 and newer)

sometimes have windows problems for all kinds of stuff after an series of shutdowns and powerons (this is not an restart). and with an real new start (restart like after updating) can windows eliminate some kind of problems by itself... my english is not so good but i hope you understand what i mean with this :-)

Well if it's a USB drive sometimes Windows regardless of how ancient or brand new it is will require a reboot when USB isn't working correct, i.e.; like the drive not mounting ("showing up") - although sometimes Windows just needs to be given time to detect and mount the drive, I've lost count how many times I've seen that with a USB drive.