I just installed Win 7, clean install, on a second HD. On the original drive C:, I have Vista, on the new drive with Win 7, drive letter K:. This is all fine if I boot Vista but when I boot Win 7 (I use F12 with Dell) the drive letters are changed. K: becomes C: and C: becomes D:. When I tried to change the drive letters back so C: becomes K:, it will not let me. I spent most of the day setting up to install Win 7 now I'm getting no where fast.
My Computer
Computer Manufacturer/Model Number
Dell Dimension 9200
OS
Windows Vista Ultimate 32 bit & Win 7 Professional 32 bit
CPU
Intel Core 2 E6320 Duo (4MB L2 cache, 1.86Ghz, 1066FSB
Motherboard
Dell
Memory
4GB Kingston Dual Channel DDR2, PC2-5300, 667Mhz
Graphics Card(s)
256MB nVidia GeForce 8600GTS
Sound Card
Integrated Sound Blaster Audigy
Monitor(s) Displays
22 inch Widescreen Digital(Dell) @ 19" Acer LCD
Screen Resolution
Dell 1680 x 1050, Axcer 1280 x1024
Hard Drives
500GB Serial ATA 3Gb/s, 7200rpm w/ DataBurst Cache
1TB Seagate Barracuda 7200.12, 2 x 1TB USB drives for BU
That's correct! Once you boot into a second Windows installation in a dual boot or even on a separate stand alone install to a different drive that will see itself as C.
For most having their optical drive remain as D regardless of which installation they are in is easy to take care of with a trip into the Disk Management tool and right clicking on a particular volume to select the change drive letter option. For seeing the optical drive made D while in use by another drive you would first change the other one from D to another letter like E, F, G, H, or another free letter available.
Once the D letter is free(if already taken) you can set that for the optical drive while a disk is present in the drive. For the second drive whiel in a dual boot most will set the E, F, or G drive letter for the host OS when booted in the second and the same for the second while booted in the host install. An external hard drive or usb flash drive when plugged in will then see E(external hard drives mostly) or H, I grabbed by flash drives
W7 Ultimate x64/W10 Pro x64/W11 Pro Triple Boot - Main PC W7 Remote PC Micro ATX W7 Pro x64/W11 Pro
CPU
AMD Phenom II X4 975 Deneb 3.6ghz - 965 2nd remote pc
Motherboard
Gigabyte GA-790XTA-UD4-Gigabyte GA-880GM-D2H remote pc
Memory
Kingston Hyper X DDR3 1600 1.5v 16gb - Hyper X Fury 8gb 2nd
Graphics Card(s)
MSI HD Radeon 5750 1gb - MSI HD Radeon 6450 on mini tower
Sound Card
Creative Labs X-Fi Xtreme Audio P - Realtek onooard 2nd case
Monitor(s) Displays
ASUS VW199T-P 19" HP 2082a Main-HP 2082a 20" remote pc
Screen Resolution
Asus 1440x900 - HP 1600x900
Hard Drives
WD Black 1TB HD per OS W7, W10, and pending W11 presently on 500gb OS Drive - Pending Triple 1TB HDs for Spanned Storage/backup volume
Single 2TB external USB enclosure, single 1TB System 7 Host/Boot drive, Pending 8TB external HD for system image b
PSU
Corsair 750TX - primary / Corsair CX600 - second
Case
Antec 900-2 - SSD compatible / NZXT Vulcan mini tower