Root SD card space issue - Noob needs help

[trentrud]

I am very new to rooting, but I've installed CM7.1 on the Nook's EMMC without any hiccups. I want to flash the Mirage ROM on there, but when I put my Sandisk 8gb class 4 mSD card into my computer via USB reader, it shows I have very little space and thus am not able to copy any zip files. I've read around about partitions and such, but I wanted to ask the community before I try anything.

Again, I'm running on complete internal memory and would like to make use of the 8gb card to install different ROMs, etc.

Any ideas? Would really appreciate the help.

 

[colchiro]

This app will clean it up: SD formatter_3.1

That's why I like to have a 1 or 2 gb card dedicated for a rescue disk so I don't have to mess with a larger card.

 

[trentrud]

Would this extend the space/allow Windows to recognize the rest of my card? I'm a complete noob when it comes to this stuff, I've been googling for a while now but how would you go about using this program exactly?

 

[colchiro]

If you've used your sdcard for a bootable sdcard, it had been split up into about 4 sections, called partitions. Usually you can only see the first one (about 100 megs in size) from windows. This program deletes all the partitions on it so it'll be just one (like it was when you purchased it).

That said, I think your best bet is to go here, where you'll find how to create a bootable card, which should also erase it for you: [ROM][CM7] [v1.3] Size-agnostic SD Card image and CM7 installer for SD Cards. - xda-developers