Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: drive letter designations

4 Weeks Ago   #1
Zoloft

Win7 Home Premium x64
 
 
drive letter designations

Are drive letter designations stored on the computer, the drive, or both? For example, I have external hard drive designated drive letter "X". If I plug that drive into a different computer, assuming there is no drive X, will that computer recognize this device as X? If it matters, assume both computers are Win7 X64 Pro.


Thanks!


R
My System SpecsSystem Spec
.
4 Weeks Ago   #2
F22 Simpilot

Windows 7 Ultimate x64
 
 

No, I don't think so. Windows assigns drive letters according to drive hierarchy.
My System SpecsSystem Spec
4 Weeks Ago   #3
dg1261

Windows 7/8.1/10 multiboot
 
 

Drive letters are stored in the [HKLM\System\MountedDevices] registry key. Note that means they're valid only for the booted OS, as other booted OSes would not use the same registry. If you multi-boot or boot from a bootable CD or USB stick, those don't use the same registry so drive letters can appear to be different in those environments.

Note that if you swap USB ports for a given USB device, it may appear to the system under a different device ID, in which case Windows may issue it a new drive letter because it may not recognize the device as having been seen before.

You can read more about the process of how drive letters are assigned and remembered on my webpages here and here. Note the same process is still used by Win 10.


Dan
My System SpecsSystem Spec
.

Reply

Thread Tools




Similar help and support threads
Thread Forum
Can't change hard drive letter to needed letter
I lost my Event Viewer, and had to do a repair installation to fix it. Unfortunately, during the repair install, Windows decided to rename my second HD as the D: drive... it was K: before that. Now I cannot access any of my docs, pictures, music, or videos through the normal means... they don't...
General Discussion
modifying drive letter: Letter to choose not in the list
Hello I had to open my pc and remove drives. Once re-installed, one of the drive has seen it's letter allocation modified. Since 2 application is pointing to G drive, I would like to be able to get it back. Hard disk (2) Was G: Now, show has a D: CD drive was D: Now show has E: G:...
Hardware & Devices
Is There Some Easy Method For Swapping Drive Designations?
This is not a problem on my computer but a friend of mine has an HP 64 bit Windows 7 tower that she says is always giving her messages about running out of disk space. I was over at her house today, and her unit, which was not new when she bought it has a partitioned drive - one is C: and the...
Performance & Maintenance
changing one drive letter all 3 partitions change to that drive letter
sir, i have windows 7 desktop. there are some partition on it.but there is problem with these partition. All the three partition have the same drive letter.i attach a link showing the picture. all three partitions are dynamic , simple. if i open these drives only the contents of one drive are...
Hardware & Devices
Want to Assign a drive letter to a partitioned device but the letter i
Want to Assign a drive letter to a partitioned device but the letter is not in the list I created a partitioned drive I went to assign letter G but I don't see it in the list. no drive is using the letter G I do believe that some USB is using letter G, but I don't see my USBs ( see image) ...
General Discussion


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 02:08.
Twitter Facebook