Lap top in GU Vertical or Horizontal

I've always mounted laptops flat and I use velcro to attach it, as it cushions the laptop from the vibrations.

Hi,

Build the laptop in the position it will be placed mostly, when formatting the drive it should be placed either vertically or horizontally, this aligns the heads for that position and helps to alleviate problems down the track. At least this is what I was taught at school.....

Servers and Raid arrays often mount discs on there side, upside down...etc. Laptop drives are tougher again and will have no problems whichever way you mount it. Seagate advise on there site the drives can be mounted in any orientation.

My Car PC has been reloacted around my car several times now, from horizontal to vertical and back again without a problem - ensure you can keep the unit cool though, have a look at laptop coolers on good old Ebay for more extreme conditions.

Rod

after destroying nearly every component in my laptop years ago when i stored it vertical, i now place it flat and don't have any probs.
when it was vertical, the pins and screws holding the motherboard rubbed thru the layers and shorted the board.
also had to replace screen, hard & floppy discs.