Introduction: DIY Dual Boot Drive
How to create a "Dual Boot Drive", i need to switch power to 3 Drives, 2 are used by MacOSX on my hackintosh and the third drive is for a Windows 7 version on same PC
1x OLD or Broken 3.5" PATA Hard Drive
1x Divider from PATA to 2xSATA (Power Cable)
1x Spare SATA connector
Voltmeter or Multimeter
PC power supply or working PC
Some lenght of 1,5 or 1 squere millimiter wire
Heatgun or lighter
Gluegun & glue sticks
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Step 1: Prepare Old HDD
Take an old 3.5" HDD and remove all screws and take off the top cover,remember hidden screws covered by the manufacturer sticker.
Keep removing screws,logic board and brushless motor until get bare metal of the Drive
Step 2: Prepare Cables
Take a power cable from PATA to 2xSATA and a single SATA power cable with peeled ends.
Cut off PATA socket and glue it to HDD frame using hot glue or epoxy glue.
Glue 3 SATA power cables to the top of metal frame of the Drive
Step 3: Wiring & Soldering
Cut a little bit of insulation of all cables
Twist togheder all black wires solder them and insulate the connection with heat shrink tubing
Take the 2 way switch and apply same solder to all pads, solder yellow wire from PATA socket to central left terminal of the switch, solder togheder 2 yellow wires and then solder to upper left terminal of swith, solder red wire from PATA socket to central right terminal of the switch, solder togheder 2 red wires and then solder to upper right terminal of swith. (This cablig allow to power 2 drives togheder once the switch is positioned on one ON side).
Solder yellow wire of third SATA connector to lower left terminal of the switch, solder red wire of third SATA connector to lower right terminal of the switch.
Step 4: Glue Last Things and Test
Once everything is soldered according to wiring explained in step 3, see also photos, glue the switch to the metal body of HDD
Take a PC power supply and connect together green and black wire on the 20/24 pin molex connector, the PSU should turn on.
Connect to power the assembled "DIY Dual Boot Drive" and check with a voltmeter the voltages and properly commutation properties of switch.