Thread: Ubuntu lost on a physical HDD

i have 2 hdds in computer. master drive has windows 7 installed.
installed ubuntu cd , requested go on second (slave) hdd.

now, when boot machine goes straight windows , ubuntu drive not seen .
how can sort of dual-boot option appear when turn on computer, please ?
ideas ?
in anticipation...

the windows bootloader not detect other oss , not create dual boot menu. computer still booting windows hdd first option.
go bios , set boot other hdd , use grub2 bootloader installed ubuntu on hdd. grub2 have menu ubuntu , windows.

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