Well, I mean, maybe it can boot past the issues your Live CD is having. I haven't studied it lately, but the other day I burned a Live SGD CD, ran it, chose some selection on some menu, and it booted me asap right into my 12.04.
If you have a choice (which I think you might), rather than choosing to "fix GRUB2," maybe first just select an option to "boot an [your] OS" to see if SGD can get you into your OS. Otherwise, you might choose an option to "fix the boot [or whatever]." I know adrian15 has done a lot of work on the SGD project. Now I can't guarantee anything, but if you were to try to fix the GRUB2 bootloader, not in my wildest dreams can I imagine how that would damage anything else on the disk, unless just spinning the disk could damage a file system. GRUB2 usually is put only in the MBR (or GPT 512 bytes) plus a little beyond it (through sector 62, counting sectors from 0), but stops before the 1st sector of the 1st partition (sometimes that is sector 63). So, in theory ... you should be safe trying to fix the bootloader ONLY.
If you have a choice (which I think you might), rather than choosing to "fix GRUB2," maybe first just select an option to "boot an [your] OS" to see if SGD can get you into your OS. Otherwise, you might choose an option to "fix the boot [or whatever]." I know adrian15 has done a lot of work on the SGD project. Now I can't guarantee anything, but if you were to try to fix the GRUB2 bootloader, not in my wildest dreams can I imagine how that would damage anything else on the disk, unless just spinning the disk could damage a file system. GRUB2 usually is put only in the MBR (or GPT 512 bytes) plus a little beyond it (through sector 62, counting sectors from 0), but stops before the 1st sector of the 1st partition (sometimes that is sector 63). So, in theory ... you should be safe trying to fix the bootloader ONLY.
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