I have three external USB 2.5" HDs where I keep my movies and TV series personal collection. Since they are an extension of my desktop I keep them all connected all the time.
The problem is that there is something weird with one of them that really annoys me. Every time I start my computer I have to unplug it otherwise it will try to boot from it.

I have searched on Google and I found several articles teaching how to make an external USB bootable, but not how to prevent it!
Any clue of what may be causing it? Thanks!

The problem is that there is something weird with one of them that really annoys me. Every time I start my computer I have to unplug it otherwise it will try to boot from it.
I have searched on Google and I found several articles teaching how to make an external USB bootable, but not how to prevent it!
Any clue of what may be causing it? Thanks!
My Computer
At a glance
Windows 7 Professional 64bitIntel i5-33308GBOnboard
- Computer type
- PC/Desktop
- Computer Manufacturer/Model Number
- Custom
- OS
- Windows 7 Professional 64bit
- CPU
- Intel i5-3330
- Motherboard
- GigaByte B75M-D3H
- Memory
- 8GB
- Graphics Card(s)
- Onboard
- Sound Card
- Behringer UCA222
- Monitor(s) Displays
- Samsung 22.5"
- Screen Resolution
- 1920x1080
- Hard Drives
- SSD Kingston 120GB
HDD Samsung 320GB
- Internet Speed
- 1M
- Antivirus
- ZoneAlarm FW + AV Free
- Browser
- Chrome