Booting up from a previously internal hard drive

healym15

Honorable
Jan 2, 2013
2
0
10,510
My laptop recently has stopped working. The hard drive was not damaged so I had that taken out. It is now connected to my other laptop via a USB adapter. I want to know if I can boot up from the hard drive connected by USB. Both hard drives have windows 7.
 

healym15

Honorable
Jan 2, 2013
2
0
10,510

If I were to run win update would i lose my data?