SD boot card

[cpaulo]

Right then my Pi arrived the other day. I had the foresight to get hold of an 8GB SD card (class 10) and followed the instruction i found on you tube to install an operating sustem image on the SD; this is what i did using my XP based net book:

Downloaded raspian wheezy
Checked it against SHA-1 and validated download
Used Win32 Disk imager to write the OS to SD

Pi turned up i plugged in the SD and connected a 5v 0.7A (700mA) power supply; after hooking up the HDMI to the tv and plugging my mouse, note no keybpoard as still inbound courtesy of delayed mail.

Red light is on and steady indicating constant power supply, after an hour nothing happened. Taken the SD card out of Pi to see if I could re-write the OS but now I cannot see the SD card in my XP machine or my windows 7 laptops.

Can any body suggest why i am not able to see my SD card, even with auto run enabled or disabled there is no sign of SD so i cannot even check to see if the OS is on there. I checked viruses on both laptops but i am completely at a loss here.

Any help would be greatlfully appreciated. Please note that i searched the forum but any search that includes the words OS/SD/disk image etc returns too many results to display.

Kind regards

Craig

[drgeoff]

The most likely explanation is that the OS is not properly written to the SD card. Are you certain that the card reader supports SDHC cards?

A properly written card will contain at least two partitions but only one will be recognised by Windows. Its size will be in the 50 to 100 Mbyte region.

Even if Windows does not assign a drive letter, does it recognise that a card is present? See my post at http://www.raspberrypi.org/phpBB3/viewt ... 20#p164620.

[cpaulo]

Thank you for the reply and the advice i had not even thought to try a digital camera to try and format the card. The card reader is integral to mymachine, as an engineer i back up all my work to a 32GB SD card so i am certain the reader works. I have unistalled and reinstalled drivers to double check and the SD card i prepped for the Pi is still not recognised.

Tried to format the card in my wife's Cannon EOS but it would not format, however it was recognised. that led me to to the next part of your post. I checked the disk managemnt tool but there is no sign of my SD; i just popped my back up SD card back in to check if the reader was working and it popped up straight away.

I have also ran the command prompt to initiate disk check utility with the SD card in but it is still not showing up. I am completely at a loss but once again I all open to ideas, its not so much that i have spent £10 on an SD card its now a challenge to get recover this SD card.