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SSD boot issues on Windows 7 64bit with Crucial M4

post #1 of 4
Thread Starter 
I've been running a dual boot with Windows 7 64bit, one image of W7 on HDD and one on SSD, for a few weeks now until yesterday when I deleted my HDD partition and trashed my MBR which is basically the root of all these problems. Here's what happened...

Before Problem...
1) My PC is running a single image of W7 64bit on a RAID'ed HDD, and the bios is set to RAID (obviously)
2) Purchased Crucial M4 SSD (256Gb), followed instructions on OC.net to install properly, installed Windows 7 64bit, switched BIOS to AHCI. Now, pc has dual boot for "Windows 7"
3) Used this config for past 3 weeks, no problems at all. I can boot into W7 HDD or W7 SSD, no problem, both work fine.

Problem Starts...
4) Boot into Windows on SSD, and using Windows Disk Manager I delete W7 HDD partition, don't need it anymore.
5) Reboot my machine and get error messages for missing master boot record, so basically I deleted the MBR on the HDD, hence the error message.
6) Using W7 Repair CD, I get into DOS, then use diskpart to set the SSD as "Active", and use bcdboot and bootrec to create new MBR on the SSD.
7) In the bios, I set the boot priority to the SSD.
8) Reboot, now the boot loader messages are fixed, cool, Windows is starting but fails about half way with BSOD, not cool.
9) I reboot into safe mode, I can see windows getting stuck on driver CLASSPNP.SYS, then BSOD again.
10) After googling for the driver issue, I find that switching BIOS to IDE, reboot, then back to AHCI and reboot again should fix issue.
11) Switch Bios to IDE, reboot, now Windows boots from SSD, cool, but I need AHCI.
12) Switch bios to AHCI, reboot, now Windows fails to load half way through, same BSOD problem from step 8
13) Switch bios to RAID, reboot, Windows loads fine.

Why can't I get this working with AHCI, and should this even be a concern at this point? Preliminary tests show the performance of the SSD with RAID compared to AHCI is identical based on Windows Experience score, disk performance is same too.

I read somewhere that the MBR cannot be written to a SSD; is this true? I had a helleva time trying to get the MBR fixed with bcdboot and bootrec.
Edited by SAFX - 9/10/12 at 4:29pm
UltimateFX3
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UltimateFX3
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post #2 of 4
You need edit the registry before you can change to AHCI from RAID.

Change to ACHI mode from RAID mode: Warning: Spoiler! (Click to show)
  1. Exit all Windows-based programs.
  2. Press [Win] + R or take the RUN option from the start menu.
  3. Now type regedit there and press Enter Key to open up the Registry Editor Window.
  4. If you receive the User Account Control dialog box, click Continue.
  5. Locate and then click the following registry subkeys:
    Code:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\pciide
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\msahci
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStorV
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor
    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\atapi
    
  6. In the right pane, right-click Start in the Name column, and then click Modify.
  7. In the Value data box, type 0 [3 is default], and then click OK.
  8. On the File menu, click Exit to close Registry Editor.
  9. Restart your computer
  10. Go to UEFI/BIOS and enable AHCI, Save & Reboot
  11. Another restart will be required to finish the driver installation.
    Note: You might not have the last registry key (iastor) as this is installed in the registry with the intel raid drivers, the default windows 7 raid driver uses the iastorV key.
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ROG Bench
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Terrorbyte V2
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Le Papa's
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CPUMotherboardGraphicsRAM
i5-4670k Asus Maximus VI Extreme  MSI GTX 660 Ti PE OC 32GB G.Skill Ares 1866MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 Pro Samsung 840 EVO  Samsung 830 Crucial MX100 
Hard DriveHard DriveHard DriveCooling
Crucial MX100 WD Blue WD10EZEX Toshiba DT01ACA300 Thermalright Silver Arrow 
OSPowerCase
Windows 7 Pro 64-Bit bequiet! Dark Power Pro 10 850W Corsair 650D 
CPUCPUMotherboardGraphics
Intel Xeon L5520 Intel Xeon L5520 Dell  ASPEED 
RAMHard DriveHard DriveHard Drive
Nanya 72GB 1066MHz ECC Registered Kingston V300 SanDisk Extreme II WD Red 
Hard DriveHard DriveHard DriveHard Drive
Samung Spinpoint F4 Hitachi Deskstar 7K3000 Samsung Spinpoint F3  Seagate 7200.12 
OSPowerCaseOther
Windows Server 2012 Datacenter Dell C1100 PSU and Corsair 650TX  Dell C1100 Chassis and Norco RPC 4224 LSI 9261-8i 
Other
Intel RES2CV240 
CPUMotherboardRAMHard Drive
A8 5600K BIOSTAR Hi-Fi A85W G.Skill Ripjaws X  Crucial M4 
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post #3 of 4
Thread Starter 
Thanks for that info....but if everything is running in RAID, what advantage do I gain by switching to AHCI?
UltimateFX3
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UltimateFX3
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Hard DriveOptical DriveOSMonitor
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post #4 of 4
Quote:
Originally Posted by SAFX View Post

Thanks for that info....but if everything is running in RAID, what advantage do I gain by switching to AHCI?
None.
ROG Bench
(15 items)
 
Terrorbyte V2
(17 items)
 
Le Papa's
(10 items)
 
CPUMotherboardGraphicsRAM
i5-4670k Asus Maximus VI Extreme  MSI GTX 660 Ti PE OC 32GB G.Skill Ares 1866MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 Pro Samsung 840 EVO  Samsung 830 Crucial MX100 
Hard DriveHard DriveHard DriveCooling
Crucial MX100 WD Blue WD10EZEX Toshiba DT01ACA300 Thermalright Silver Arrow 
OSPowerCase
Windows 7 Pro 64-Bit bequiet! Dark Power Pro 10 850W Corsair 650D 
CPUCPUMotherboardGraphics
Intel Xeon L5520 Intel Xeon L5520 Dell  ASPEED 
RAMHard DriveHard DriveHard Drive
Nanya 72GB 1066MHz ECC Registered Kingston V300 SanDisk Extreme II WD Red 
Hard DriveHard DriveHard DriveHard Drive
Samung Spinpoint F4 Hitachi Deskstar 7K3000 Samsung Spinpoint F3  Seagate 7200.12 
OSPowerCaseOther
Windows Server 2012 Datacenter Dell C1100 PSU and Corsair 650TX  Dell C1100 Chassis and Norco RPC 4224 LSI 9261-8i 
Other
Intel RES2CV240 
CPUMotherboardRAMHard Drive
A8 5600K BIOSTAR Hi-Fi A85W G.Skill Ripjaws X  Crucial M4 
Optical DriveOSMonitorMonitor
Asus DVD Burner Microsoft Windows 7 Professional  ASUS VE276Q HPw1907 
PowerCase
Antec Neo Eco 520 HAF 912 
  hide details  
Reply
ROG Bench
(15 items)
 
Terrorbyte V2
(17 items)
 
Le Papa's
(10 items)
 
CPUMotherboardGraphicsRAM
i5-4670k Asus Maximus VI Extreme  MSI GTX 660 Ti PE OC 32GB G.Skill Ares 1866MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 Pro Samsung 840 EVO  Samsung 830 Crucial MX100 
Hard DriveHard DriveHard DriveCooling
Crucial MX100 WD Blue WD10EZEX Toshiba DT01ACA300 Thermalright Silver Arrow 
OSPowerCase
Windows 7 Pro 64-Bit bequiet! Dark Power Pro 10 850W Corsair 650D 
CPUCPUMotherboardGraphics
Intel Xeon L5520 Intel Xeon L5520 Dell  ASPEED 
RAMHard DriveHard DriveHard Drive
Nanya 72GB 1066MHz ECC Registered Kingston V300 SanDisk Extreme II WD Red 
Hard DriveHard DriveHard DriveHard Drive
Samung Spinpoint F4 Hitachi Deskstar 7K3000 Samsung Spinpoint F3  Seagate 7200.12 
OSPowerCaseOther
Windows Server 2012 Datacenter Dell C1100 PSU and Corsair 650TX  Dell C1100 Chassis and Norco RPC 4224 LSI 9261-8i 
Other
Intel RES2CV240 
CPUMotherboardRAMHard Drive
A8 5600K BIOSTAR Hi-Fi A85W G.Skill Ripjaws X  Crucial M4 
Optical DriveOSMonitorMonitor
Asus DVD Burner Microsoft Windows 7 Professional  ASUS VE276Q HPw1907 
PowerCase
Antec Neo Eco 520 HAF 912 
  hide details  
Reply
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