Question about Hitachi 500GB 7200RPM 16MB BUFFER SERIAL ATA II/300, 3.5INCH, 8.8MS SEEK, DESKSTAR P7K50 500 GB Hard Drive

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I installed a hitachi 500gb hd in my computer using a serial ata cable , but when i turned the computer on I get an error message "Reboot and Select proper Boot device or Inster Boot Media in selected Boot device and press a key" what is this about? Thank you

Posted by Anonymous on


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There is a series of phases the computer goes through before it tries to boot an installed operating system.

It sounds like your computer can start and does recognise your new hard drive, but dosn't look or recognise your original drive any longer. This is certainly the case if you remove the new drive, and the computer works like it's expected to.

The second thing is recognising which drive to boot from. This involves going to the BIOS settings, which is reached by pressing a magic button, while your computer is first starting up. It's different for various manufacturers, and sometimes displayed on the screen when the option is available, like "Press F2 to enter Setup" or something similar. My Computer says "Press F11 to go to setup; Press F12 for Boot options". The most common keys, if your computer isn't so forthcomming, are F2, F6, F11 and F12. Press all of these, (one at a time), soon after starting the computer, and you'll probably end up in the BIOS Setup.

In the BIOS setup there are options for the available "Drives" on your computer, with SATA capable BIOSs each drive port, (SATA plug), available has it's own page with options and explanations. Check that your original drive is Enabled still.

There should be a Boot Options page, where the available boot media is listed in the prefered priority, like (CD Drive, Floppy drive, USB drive, C: drive, D:Drive, etc.), on this list move your original drive, (May only be listed as the manufacturers number), to the top of the list.

Save the Settings and exit to reboot with the new settings.

Hopefully this leads to some solution.

Posted on Nov 04, 2012

  • Richard Schabler Nov 04, 2012

    One additon, perhaps the quick fix, is to be sure you have a power supply connector plugged into each hard drive, and that the data cables and power connectors are plugged in all the way. SATA cables do slip out at times.


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Your computer is trying to boot from the new istalled drive instead of the drive containing the operating system,
you could try swapping the SATA cables on the mother board, or enter the BIOS by rebooting and at start up, holding the correct key (acording to the manual) then look for BOOT DEVICE some where in the BIOS menu, change the boot device to the correct hard drive (the one containing the operating system)

Have fun!

Posted on Dec 31, 2010


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