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I just installed Ubuntu 12.04 32-bit on an ASUS Laptop and wanted to install it in another one, the ASUS A55V.

After booting the laptop and setting up Windows 7 (I unfortunately cannot wipe out Windows), and creating one extra partition to install Ubuntu there, when I reboot from USB and launch Ubuntu installation, it doesn't recognize any partition on /dev/sda, but shows the whole disk as unpartitioned. I guess this is due to UEFI, but I don't know how I can make Ubuntu see the partitions created by Windows. Or any workaround for this to be able to install Ubuntu on /dev/sda.

Thanks in advance

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Try to change Hard controller mode in BIOS,may it works –  wisdom Jul 4 '12 at 8:42
    
Or use the GParted liveCD and boot from that to see if you can see the partitions –  Lawrence Dec 3 '13 at 8:24

1 Answer 1

Make sure what partition table layout do you have - MBR or GPT. If you have new computer with UEFI second option if more probable. Try gdisk (should be available id repo) and see if it's providing any data.

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