for some reason i get the feeling you're asking about it due to trying to install an OS onto a computer that has no optical drive such as an Eee PC? If so.... i tried several times, and i find that the process is kinda tedious, and doesn't seem to work very well every time.....
1) Get an SD card adapter or SD reader that allows it to plug into a USB port then just treat it as a bootable thumb drive. Warning some readers/adapters may not play well with your MB B ios and this trick will not work.
2) The built in reader may or may not allow you to just treat the SD like a thumb drive. You will have to try it and find out for you machine.
If you ned help with doing the bootable thumb drive post back and I'll dig up the links.
The first step is to get a copy of the HP format utility to format the thumb drive as a system device. There are alternative approaches but they are more difficult. HP took the utility off their web site so you have to google for a copy.
check the bios, for the boot from removable device. if available.
PeToUSB is a Win32 GUI application for formatting and making bootable, USB Flash Memory Drives and USB HardDisks and optionally copying the output from a successful BartPE/WinPE build to the device. There are options to backup/restore the MBR on a device.
i think it's barely impossible to boot from an sd card reader than with a usb thumbdrive. sorry, Eagle710. consider buying a usb flash drive instead and set the bios to boot from a usb thumbdrive if the bios actually support it.
the most crucial part from booting from usb removable devices is the BIOS support. no bios support, no luck booting from usb flash drives.
Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS