Windows 10: Drive C and D Letter Swapped After Windows Update

Hey, my drive letter swapped after automatic update in Windows 10. Because of that, i can't boot into windows safe mode too. Everytime I turn on my laptop, it's always tries to troubleshoot and do startup repair but it didn't work. I've tried to change back the drive letter via advanced recovery option > command prompt but it also don't work the drive letter change back after restart

:)

 

Swapping drive letters, including boot volume

I have a new computer. I want to clone the system to a new SSD. Can I change the drive letter of the SSD to C: after cloning?

I have a new ASUS M52BC with:

• 1 TB hard drive with a Windows (C and empty data (D partition
• Windows 8.1 (I will upgrade to Windows 10 very soon) on the hard drive
• Samsung SSD 850 EVO (physically installed but nothing more done to it)

What I want to get to is:

• 1 TB hard drive with the data (D partition and (for the old Windows partition) the drive letter of the C: changed to something else
• Windows 10 on the SSD as the C:

I don't intend to boot to Windows on the hard drive after I get Windows working on the SSD unless I need to remove the SSD for return to ASUS for repair. (My new computer had a bad motherboard when I received it but I hope I do not need to return it again.)

I want to clone Windows to the SSD using the Samsung Data Migration tool. During the clone, the SSD will of course not have the drive letter "C". To boot from and use the SSD after the cloning, it must have the drive letter "C", correct? I assume the Data
Migration tool cannot change the drive letter used by the software it clones.

After the clone, how do I swap the drive letters? I assume I cannot change the drive letter of the hard drive Windows partition when it was used to boot from because it would be the boot drive, correct?

I know that some people will suggest that I do a fresh install. I want to avoid doing that if possible.

I see
Migrate system partition to a new disk. I think that describes doing what I am trying to do, but unfortunately he does not know how he did it.

 

Drive letter assignment to hot-swap drives being forgotten

You could create a batch file with diskpart that remove the drive letter and reassigns the one you want.
The drive number n should be last on list.

Initially


diskpart
list disk (to identify disk number)

Batch file e.g. letter.bat contains one line

diskpart /s letter.txt

and letter.txt contains

select disk n (n from above)
remove
assign letter= J (or whatever you want)
exit

and each time you swap drive, just run letter.bat.

 

Drive letter assignment to hot-swap drives being forgotten


I have two SATA hot-swap drives that I alternate between each day for backups. When using Windows 7 I was able to assign the disks to g: and then after the initial assignment, windows would remember this and assign it to g: on each subsequent use.

But with Windows 10 it seems to forget the assignment after a reboot, and assigns d: (the first free letter) instead. (Quite possibly this isn't actually related to a difference between Win 7 / 10 though - when using Win 7 I had a drives on d:, e:, f:, and so g: was the first available letter. On Win 10 I no longer have the d: and f: drives attached, and so d: is now the first available letter.)

To be clear:

• The hot swap disks are not permanently attached
• Only one hot swap disk is ever attached at a time
• Both hot swap disks have been assigned to g: (but this isn't sticking)

Anyone have any ideas?