[Q] Format UMS partition back to FAT32
I started playing with my Galaxy S2 I9100 recently after upgrading to a Galaxy S4 I9505 and trying custom ROMs. As the system partition wasn't big enough to install a ROM and a full Gapps package, I thought I'd try to change the partition table and increase the size of the FACTORYFS and DATAFS partitions at the same time reducing the size of the UMS partition.
My first attempt was to use parted through an ADB bridge with the phone in CWM recovery and doing so managed to get the phone working with the exception of the camera which immediately threw up the error 'Unfortunately camera has stopped working.' The Gallery app also doesn't work saying there is no storage present. When using the print function of parted, there was a msftres flag indicated for the FAT32 formatted UMS partition.
I have since used PITmagic to set FACTORYFS to 1GB and DATAFS to 4GB but interestingly when using the print function in parted, DATAFS and UMS had nothing listed under filesystem. I was able to get the DATAFS partition to ext4 using the wipe data function in CWM recovery but am unable to get the UMS partition formatted to FAT32. I have tried flashing busybox to use the mkdosfs or mkfs.vfat commands but these are unable to format a partition of the size that my UMS currently is set at.
Does anyone know of a way to reformat the internal UMS partition back to FAT32?