I'm triple-booting (or trying to) on two hard drives: one has XP (32-bit) and 10 (64-bit) and one has Ubuntu 15.04 (64-bit). If I try to boot into XP, my whole system restarts. When I try to go back to Windows bootloader, my system restarts a second time. When I go back to Windows bootloader again, I can actually get into the bootloader, where I select 10 and successfully boot into it.
I followed all of the advice in setting it up and smoothing it out: I disconnected the Linux drive, created a partition and installed XP, installed 7 on the remaining partition, upgraded to 10. Could boot just fine into XP or 10. Disconnected the Windows drive, installed 15.04. Repaired the GRUB via the live USB after encountering
and generated this URL: Ubuntu Pastebin
error: file not found.
grub rescue> _
When I sought help in the Ubuntu forums, I was told to get a bootinfo summary, and generated this URL: Ubuntu Pastebin
Can someone help me fix this, please?