Solved Active partition disappears

doniel

New member
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I recently installed Win7. I'm still mostly in XP, and the partition that has always been C: (first partition on disk 0) contains my boot files. When I select Windows 7 from the boot menu, it boots into my Win7 installation, which is located on the partition that has always been drive L:.

Windows 7 makes L: C:. In other words, when listing the drives in Explorer or Disk Management, the drive on which I installed Win7, which has always been L: in XP, now shows as C:. My original C: doesn't show in Explorer at all, and in Disk Management, it appears without a drive letter assigned to it.

In effect, Win7 has made a partition totally inaccessible.

Is there any solution?
 

My Computer

OS
Win 7 Ultimate 32
You simply need to give it a drive letter for win 7.
This shouldn't affect boot orders as the system only sees disk 0 partition 1 or disk 0 partition 2
it doesn't care about letters.
 

My Computer

Computer Manufacturer/Model Number
Insane hobo technologies. ;-)
OS
Windows 7 x64
CPU
Intel i7 2600k
Motherboard
Asrock z68 extreme 4 gen 3
Memory
G.skill Ripjaw 16gigs @ 1866
Graphics Card(s)
Nvidia gtx580 (evga)
Sound Card
Integrated HD audio + hdmi
Monitor(s) Displays
24" ASUS widescreen + 42" insignia
Screen Resolution
1080p (1920x1080)
Hard Drives
128 Samsung 830
256 Samsung 840
3 x 1tb storage drive (various)
1 western digital 1tb (eSATA)
1 Seagate 1tb (eSATA)
PSU
1 kilowatt SLI/Crossfire rated Silverstone modular
Case
NZXT Phantom + additional 220 fan
Cooling
Zalmann
Keyboard
Microsoft wireless 3000 (v2)
Mouse
MS - wireless 5000 (bluetrack)
Internet Speed
depends on if you ask me or my provider.
Other Info
The above information is provided as is, and the author assumes no responsibility for issues it may cause with your sanity or fanboyism.
You are experiencing one of the many issues that lead me to rail against dual-booting. Since virtualization became free and computers had the power and hardware support for it, dual-booting was declared a dead tech, at least to me. I never liked the fact you could render one or both OSes unusable.

If it was me, I'd back up my data completely, wipe the drive, and just install Windows 7 clean. If you still need XP for some unique reason, throw it in VirtualBox or install XP Mode.
 

My Computer

OS
Windows 7 Ultimate x64 SP1
CPU
Intel Core i7-2600
Motherboard
Gigabyte GA-P67A-UD3P-B3
Memory
12 GB Patriot Extreme DDR3-1333
Graphics Card(s)
Nvidia GTX 470
Monitor(s) Displays
Dell UltraSharp 2209WA
Hard Drives
OCZ Agility3 240 GB, WD5001AALS, WD7501AALS
PSU
OCZ ModStream 700W
Case
CoolerMaster HAF 912 Advanced
Cooling
CoolerMaster Hyper 212 Plus
nevermind what I said .... ^^^
 

My Computer

Computer Manufacturer/Model Number
Insane hobo technologies. ;-)
OS
Windows 7 x64
CPU
Intel i7 2600k
Motherboard
Asrock z68 extreme 4 gen 3
Memory
G.skill Ripjaw 16gigs @ 1866
Graphics Card(s)
Nvidia gtx580 (evga)
Sound Card
Integrated HD audio + hdmi
Monitor(s) Displays
24" ASUS widescreen + 42" insignia
Screen Resolution
1080p (1920x1080)
Hard Drives
128 Samsung 830
256 Samsung 840
3 x 1tb storage drive (various)
1 western digital 1tb (eSATA)
1 Seagate 1tb (eSATA)
PSU
1 kilowatt SLI/Crossfire rated Silverstone modular
Case
NZXT Phantom + additional 220 fan
Cooling
Zalmann
Keyboard
Microsoft wireless 3000 (v2)
Mouse
MS - wireless 5000 (bluetrack)
Internet Speed
depends on if you ask me or my provider.
Other Info
The above information is provided as is, and the author assumes no responsibility for issues it may cause with your sanity or fanboyism.
After reading Magnuscreed's solution again, I'd give that a shot first. If it is as simple as assigning it a drive letter, my suggestion would be WAY overkill.
 

My Computer

OS
Windows 7 Ultimate x64 SP1
CPU
Intel Core i7-2600
Motherboard
Gigabyte GA-P67A-UD3P-B3
Memory
12 GB Patriot Extreme DDR3-1333
Graphics Card(s)
Nvidia GTX 470
Monitor(s) Displays
Dell UltraSharp 2209WA
Hard Drives
OCZ Agility3 240 GB, WD5001AALS, WD7501AALS
PSU
OCZ ModStream 700W
Case
CoolerMaster HAF 912 Advanced
Cooling
CoolerMaster Hyper 212 Plus
It will give win 7 access to the partition.
I can not be 100% sure that it may not cause problems when booting back into xp though I really do think just getting xp mode for win 7 is your easy out.
Download Windows XP Mode
 

My Computer

Computer Manufacturer/Model Number
Insane hobo technologies. ;-)
OS
Windows 7 x64
CPU
Intel i7 2600k
Motherboard
Asrock z68 extreme 4 gen 3
Memory
G.skill Ripjaw 16gigs @ 1866
Graphics Card(s)
Nvidia gtx580 (evga)
Sound Card
Integrated HD audio + hdmi
Monitor(s) Displays
24" ASUS widescreen + 42" insignia
Screen Resolution
1080p (1920x1080)
Hard Drives
128 Samsung 830
256 Samsung 840
3 x 1tb storage drive (various)
1 western digital 1tb (eSATA)
1 Seagate 1tb (eSATA)
PSU
1 kilowatt SLI/Crossfire rated Silverstone modular
Case
NZXT Phantom + additional 220 fan
Cooling
Zalmann
Keyboard
Microsoft wireless 3000 (v2)
Mouse
MS - wireless 5000 (bluetrack)
Internet Speed
depends on if you ask me or my provider.
Other Info
The above information is provided as is, and the author assumes no responsibility for issues it may cause with your sanity or fanboyism.
I'm embarrassed!

When I read your suggestion to assign the partition a drive letter, my initial reaction was that I'd already tried that. Since it had been a few weeks since I'd last worked on the problem, however, I decided not to rely on my memory. I booted into Win7 and found that there was absolutely no problem assigning it a drive letter.

My feeling is that I got frustrated when Win7 wouldn't let me change C: back to L:, and that I therefore never got around to trying assign a drive letter to the partition that had no drive letter.

Thanks very much to both of you, maguscreed and DeaconFrost!
 

My Computer

OS
Win 7 Ultimate 32
lol yeah it just needed a drive assignment so you could access it. Glad your settled please go to the top and mark the thread solved when you get a moment.
 

My Computer

Computer Manufacturer/Model Number
Insane hobo technologies. ;-)
OS
Windows 7 x64
CPU
Intel i7 2600k
Motherboard
Asrock z68 extreme 4 gen 3
Memory
G.skill Ripjaw 16gigs @ 1866
Graphics Card(s)
Nvidia gtx580 (evga)
Sound Card
Integrated HD audio + hdmi
Monitor(s) Displays
24" ASUS widescreen + 42" insignia
Screen Resolution
1080p (1920x1080)
Hard Drives
128 Samsung 830
256 Samsung 840
3 x 1tb storage drive (various)
1 western digital 1tb (eSATA)
1 Seagate 1tb (eSATA)
PSU
1 kilowatt SLI/Crossfire rated Silverstone modular
Case
NZXT Phantom + additional 220 fan
Cooling
Zalmann
Keyboard
Microsoft wireless 3000 (v2)
Mouse
MS - wireless 5000 (bluetrack)
Internet Speed
depends on if you ask me or my provider.
Other Info
The above information is provided as is, and the author assumes no responsibility for issues it may cause with your sanity or fanboyism.
I marked it as solved as soon as I posted my last reply.
 

My Computer

OS
Win 7 Ultimate 32
good deal hopefully you'll never need us again :)
 

My Computer

Computer Manufacturer/Model Number
Insane hobo technologies. ;-)
OS
Windows 7 x64
CPU
Intel i7 2600k
Motherboard
Asrock z68 extreme 4 gen 3
Memory
G.skill Ripjaw 16gigs @ 1866
Graphics Card(s)
Nvidia gtx580 (evga)
Sound Card
Integrated HD audio + hdmi
Monitor(s) Displays
24" ASUS widescreen + 42" insignia
Screen Resolution
1080p (1920x1080)
Hard Drives
128 Samsung 830
256 Samsung 840
3 x 1tb storage drive (various)
1 western digital 1tb (eSATA)
1 Seagate 1tb (eSATA)
PSU
1 kilowatt SLI/Crossfire rated Silverstone modular
Case
NZXT Phantom + additional 220 fan
Cooling
Zalmann
Keyboard
Microsoft wireless 3000 (v2)
Mouse
MS - wireless 5000 (bluetrack)
Internet Speed
depends on if you ask me or my provider.
Other Info
The above information is provided as is, and the author assumes no responsibility for issues it may cause with your sanity or fanboyism.
But it's good to know you're there.
 

My Computer

OS
Win 7 Ultimate 32
*whew* Good thing you tried the simple solution first, before mine.
 

My Computer

OS
Windows 7 Ultimate x64 SP1
CPU
Intel Core i7-2600
Motherboard
Gigabyte GA-P67A-UD3P-B3
Memory
12 GB Patriot Extreme DDR3-1333
Graphics Card(s)
Nvidia GTX 470
Monitor(s) Displays
Dell UltraSharp 2209WA
Hard Drives
OCZ Agility3 240 GB, WD5001AALS, WD7501AALS
PSU
OCZ ModStream 700W
Case
CoolerMaster HAF 912 Advanced
Cooling
CoolerMaster Hyper 212 Plus
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