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godonholiday

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#1 godonholiday
Member since 2009 • 379 Posts

I just did a fresh windows 7 insatll on an SSD, but forgot to set the bios to AHCI. Dumb I know

I cant do it after can I?

As I havent installed anything except for Win7, can I just do a reinstall? How would I do that over the existing insatll?

Thanks

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Bebi_vegeta

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#2 Bebi_vegeta
Member since 2003 • 13558 Posts

You can either reinstall or just install the mircosoft fix.

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ChiliDragon

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#3 ChiliDragon
Member since 2006 • 8444 Posts
This is the Microsoft fix Bebi_vegeta is talking about. If you decide to do a reinstall instead, boot from the Win7 disk as normal, use the partition manager on the disk to delete the existing partitions, then reboot from the disk and do a new install just like you did the first time.
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fred1266

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#5 fred1266
Member since 2007 • 991 Posts

i believe you can just go to the bios and turn Achi on, but doesn't really make a difference, i have a SSD and i didn't even turn on Achi

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Bebi_vegeta

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#6 Bebi_vegeta
Member since 2003 • 13558 Posts

i believe you can just go to the bios and turn Achi on, but doesn't really make a difference, i have a SSD and i didn't even turn on Achi

fred1266

Many have reported better performance with ACHI and trim support.

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ChiliDragon

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#7 ChiliDragon
Member since 2006 • 8444 Posts

[QUOTE="fred1266"]

i believe you can just go to the bios and turn Achi on, but doesn't really make a difference, i have a SSD and i didn't even turn on Achi

Bebi_vegeta

Many have reported better performance with ACHI and trim support.

What he said. Lots of SSD features are not available in IDE, only in AHCI. Also, if Windows 7 was installed in IDE mode it won't boot in any other unless you apply the fix that we talked about earlier. So switching BIOS from one to the other without first making the necessary registry changes will lead to a BSOD due to not finding a boot device. Fun times...
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fred1266

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#8 fred1266
Member since 2007 • 991 Posts

so you supposeto turn Achi on when you installing windows 7, because when i tried i tried it was after i installed windows 7

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ChiliDragon

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#9 ChiliDragon
Member since 2006 • 8444 Posts

so you supposeto turn Achi on when you installing windows 7, because when i tried i tried it was after i installed windows 7

fred1266
Exactly. Set AHCI in BIOS before you install Windows, and then you don't have to worry about it.