Re: [ROM] JB 4.1.2 SlimRom for LS670 3.1
Do it within your recovery, if you can. Boot into recovery and see if you have the option somewhere to partition the sd card. Make a nand backup, reboot, copy your sd card to your computer (because you're about to erase it.) Reboot into recovery and partition your card. THIS WILL ERASE YOUR CARD. Make your ext no more than 10% of your card capacity, i.e. <250mb for the 2.5GB cards that often come with the phones; set the "swap size" to zero, if you see that option. Now, you should have a partitioned card. I don't know if you can restore a backup (that was made on a non-partitioned card) onto your phone now that you have reformatted your card. You may need to re-flash the ROM and start again. If it doesn't work out just right, you can pull the recovery folder from the sd card backup that you made on your computer and put it back on your card; boot into recovery, restore the backup, and you'll be back to square one.