Two drive C volumes?

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  1. Posts : 499
    Windows 7 Ultimate 64Bit
       #11

    Reinstall on the ssd again, this time leave the other drives connected. You should get the option to boot to either drive. And each will be the C drive. I`ve done this dozens of times.
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  2.    #12

    It is not preferable to have Windows configure a Dual Boot as it interlocks the HD's requiring major surgery to remove one. This is why we recommend unplugging existing OS HD before installing to a second HD.

    Separate HD's booted via the BIOS leaves them independent to come and go as you please.
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  3. Posts : 499
    Windows 7 Ultimate 64Bit
       #13

    But the way I describe is sooooo much easier.
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  4. whs
    Posts : 26,210
    Vista, Windows7, Mint Mate, Zorin, Windows 8
       #14

    gregrocker said:
    There is a forum's tutorial on how to change to AHCI after install: AHCI : Enable in Windows 7 / Vista

    In a dual boot where both must be changed I think I would remove the other HD while I change over the first one, then repeat the same with the other HD set to its native SATA mode to start.

    As I've not done this myself, I'd wait for Wolfgang or the tutorial author to sign off on it before proceeding. Also, other than the ability to have modern hotplugging there are no reports I can remember of improved performance.
    I am in the same position as Greg - I have never tried that because in my multiboot systems I run my SSDs in IDE mode. I found that the performance advantage with AHCI is minimal and I like to stay out of trouble.

    But the way Greg described it should work. Set the BIOS to IDE and boot into the HDD system. There you set the registry to AHCI as described in the linked tutorial. Then you can go back to AHCI in the BIOS. Try that and let us know whether it works.
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  5. Posts : 10
    Windows 7 Home 32-bit
    Thread Starter
       #15

    Currently, all the drives are working very well in SATA mode. I'm a little reluctant to change to AHCI if there is no perceptible difference in speed?

    I might try it with the SSD and there isn't much on it at the moment and I can afford for it to go wrong.

    However - one quick question - can you go back to SATA from AHCI without causing the same BSOD issues?
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  6. whs
    Posts : 26,210
    Vista, Windows7, Mint Mate, Zorin, Windows 8
       #16

    However - one quick question - can you go back to SATA from AHCI without causing the same BSOD issues?
    I guess you can if you do it in the right sequence - OS first, BIOS second.
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