Hard drive letters switching

staypuft

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Since installing Windows 7 (build 7100) I have been having a strange issue. I have a system drive (C:, 80GB) and 2 identical 300 GB drives (D: and E: ) used to store media. All my drives are internal SATA drives.

Oddly, whenever I restart my computer the drive letters for D: and E: switch. So Media1, which was D:, becomes E:, and vice versa for Media2.

Obviously this is a problem. Has anyone else experienced it? Ideas? I've had this same setup in Windows Vista for over a year, no problems. No hardware was changed with the OS upgrade.
 
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My Computer

OS
Windows 7
CPU
Quad 6600
Motherboard
DFI Lanparty
Memory
4GB Corsair
Graphics Card(s)
Radeon HD 4800
Monitor(s) Displays
Acer 22"
PSU
Antec 550W
Case
Antec P180
Drive Letters switching

This is a windows feature whereby Windows 7 has a new boot loader that actually changes the C: drive (internally within the OS) so that the the OS being loaded is always on Drive C:.

Click on the start button and search for CMD. Run CMD as an administrator and enter BCDEDIT at the DOS prompt. This will display the boot options. They can be changed using the BCDEDIT program but is tricky - look at the examples (BCDEDIT /?). Good luck
 

My Computer

Computer Manufacturer/Model Number
HP
OS
Windows 7 Pro 64 bit
CPU
AMD Dual Core
Memory
2 gigs
Screen Resolution
1400 x 900
My Windows install (only OS on system) is on C: and I formatted that drive before install. I'm not having a problem with C:, rather the drives D: and E: are switching.

So to clarify, D: is Media1 and E: is Media2
However when I restart, D: is Media2 and E: is Media1

Does anyone know the cause, and even better, the solution?
 

My Computer

OS
Windows 7
CPU
Quad 6600
Motherboard
DFI Lanparty
Memory
4GB Corsair
Graphics Card(s)
Radeon HD 4800
Monitor(s) Displays
Acer 22"
PSU
Antec 550W
Case
Antec P180
If it is changing on reboot, it makes me wonder if it's because of the SATA port the drive is connected to on the motherboard. Just a thought. You may try switching them and see if they stay the way you want them.
 

My Computer

Computer Manufacturer/Model Number
Keeps changing - (Custom)
OS
Windows 7 Professional x64
CPU
Intel Core i7 860
Motherboard
Gigabyte GA-P55-UD4P
Memory
4GB DDR3 Mushkin 1600Mhz @ 7-8-7-20
Graphics Card(s)
MSI GTS250 1GB DDR3 Twin Frozr
Sound Card
Onboard realtek
Monitor(s) Displays
Samsung SyncMaster 24" P2450 + Samsung 20" 2033
Screen Resolution
1920 X 1080 and 1600 X 900 (#2 system 1440 X 900)
Hard Drives
Patriot Inferno 120GB SSD + 3 WD Blue 640GB drives
PSU
Corsair 750 HX Modular
Case
Lancool PC-K62
Cooling
Cooler Master TX3 CPU cooler and 4-140mm and 1-120mm case
Keyboard
Gigabyte USB keyboard
Mouse
Microsoft wireless laser mouse 5000
Internet Speed
7 Mb down 1.5 up
Other Info
System #2: AMD Phenom II X6 1055T (Freezer 7 Pro cooler) - Gigabyte 880GMA-UD2H - WD 500GB Black - 9500GT (1GB) 500W OCZ modular PSU - Antec 200 case. System #3 (LapTop) Core 2 Duo T6670 - 320GB 7200RPM HD - 4GB DDR3 RAM.
I agree with Nate42nd. Make sure the 80GB is on SATA port 0.
 

My Computer

Computer type
PC/Desktop
OS
7229
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