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As the title suggests, I am trying to install Ubuntu 12.10 on the 24GB integrated SSD of an Asus UX32A. I took into consideration this answer - How to boot Ubuntu from SSD drive which cannot be selected as boot device? - and basically these are the steps that I followed:

  1. Deleted the info from the SSD
  2. Converted the SSD to MBR
  3. Created a small partition for /boot on the main HDD (~200 MB)
  4. Selected from BIOS the SSD as the primary boot partition
  5. When the installation began, I created on the SSD a partition for / and one for swap
  6. Although the SSD theoretically was MBR, it complained about not having a BIOS Boot Partition, so I also created one for the bios-grub.

Everything worked fine, except for the fact that after the restart, the system did not recognize the SSD anymore and I was unable to select it as the main boot device. Furthermore, if I use diskpart, it shows that the SSD is GPT, and not MBR, although I initially converted it to MBR.

Do you have any idea on how could I fix this?

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up vote 2 down vote accepted
  1. Try examining your firmware boot options. Look for options to enable CSM, BIOS, or legacy boot features; or to disable EFI or UEFI boot features.
  2. Launch Linux's fdisk (not gdisk, parted, or GParted) and use the a option to set the "bootable flag" on the one partition that you should see. Use the w option to save changes.
  3. If neither of the above works, consult this page of mine, which goes into more detail about this problem and provides more obscure possible workarounds.
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