First you have to allocate the SSD.
Your right in that it will show up in your friend's computer because his computer already knows where to look for the MBR of the drive beause it was already allocated for HIS COMPUTER...
First, reattach the SSD drive to your computer and then...
Open the Disk Management console. ...
Right-click the unallocated volume.
Choose New Simple Volume from the shortcut menu. ...
Click the Next button.
Set the size of the new volume by using the Simple Volume Size in MB text box.
If you cannot allocate the drive under Windows Disk Management you might want to get Partition Magic or other partitioning software that can help you allocate your "newly" aquired SSD drive...
Here is another option via an ADMINISTRATIVE Command Prompt:
Open the Command Prompt as Administrator.
Type diskpart and hit Enter.
Once you enter to the diskpart screen type list disk and hit Enter.
Now a list of the disks will be shown, type select disk x (the X is the disk number that has an unallocated space) and hit Enter.
You also should be able format that disk via the ADMIN command prompt as well after you use diskpart to re-allocate the space on that SSD for use under your Windows 10 and YOUR computer.
I do like and use often the aid of a partitioning software to help speed things along, however.
Good Luck...
Cheers!
《♤》Sawuwaya / Spirit Wolfe《♤》
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