News How to Use an External Drive for Internal Storage

@drtweak - Many PC's have power supplies with no Molex connector. In which case, you can use a 4-pin SATA power splitter. It will not carry the 3.3V line at all.
 
... or simply cut the (orange) 3.3V cable to the SATA power connector.
Too bad if you have one of those color-blind PSUs with all black cables...
 
... or simply cut the (orange) 3.3V cable to the SATA power connector.
Too bad if you have one of those color-blind PSUs with all black cables...

I have done all of this and I see the drive in disk utility and it shows the partitions but I cannot mount/change drive letters. I need to get data off this harddrive. Any suggestions on what I do next? As mentioned, BIOS and disk manager see the drive but I cannot get it to work in explorer or get it a drive letter. Hopefully someone can help. Thanks guys!!
 
... I see the drive in disk utility and it shows the partitions but I cannot mount/change drive letters. I need to get data off this harddrive.
If i understand you correct the drive and partition is visible, but it has no default drive letter assigned. Correct?

Then what information can you get about the partition? Perhaps the partition is formatted in a way that can't be read by your OS.