Dual boot W7 and XP - XP doesn't recognise data drives


  1. ng17
    Posts : 3
    Windows 7 Ultimate x64
       New #1

    Dual boot W7 and XP - XP doesn't recognise data drives


    Hello

    I have been running a desktop with XP Pro SP3 for 5 years. It has 3 HDD - one for OS/programs and two for data.

    I just installed a SSD and Windows 7 Ultimate x64 onto it. I can boot OK into either OS. However, in W7 I can see all four HDD OK, whereas in XP I can only see the SSD and the HDD with XP/programs on it - I can't see the two data drives. They don't show up in XP under Windows Explorer; Computer Management; or Disk Management. Could it be something to do with changing from IDE to AHCI for the SSD install?

    Thanks.
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  3. ng17
    Posts : 3
    Windows 7 Ultimate x64
    Thread Starter
       New #2

    I disconnected all existing drives when I installed the SSD and W7. All four drives show up in BIOS and when I boot to W7, but the two data drives simply don't show up in XP. Could it be missing drivers? or something to do with changing the IDE setting to ACHI?
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  4. ng17
    Posts : 3
    Windows 7 Ultimate x64
    Thread Starter
       New #3

    Solved this myself. It was because the mobo doesn't accept ACHI, so I deleted the Win7 partitions and re-installed it from scratch after setting teh Drives back to IDE.
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