Format SD Card to support Apps2SD and Linux-Swap
Direct copy and paste from XDA-Developers Forums: Original Thread Here
To format card SD card with linux-swap WARNING!!! this will reformat you entire SD card!!
You can use the recovery console and parted to format SDcards with 1.31 folks, no more going through hassles you have the tools on you G1!…here is an example of how to do this in recovery console using parted. DO NOT USE MORE THAN 32MB SWAP!!!
Example for 8GB card (this example plays it safe and will leave a small amount leftover regardless of the 8GB card)
Reboot and enter recovery
Enter console
#parted /dev/block/mmcblk0
#print (to verfiy we know what size card we are dealing with, the details should be straight forward)
rm 1
rm 2
mkpartfs primary fat32 0 7200
mkpartfs primary ext2 7200 7700
mkpartfs primary linux-swap 7700 7732
#print (to verify we have the 3 partitions)
Example for my 4GB card
#parted /dev/block/mmcblk0
#print (to verfiy we know what size card we are dealing with, the details should be straight forward)
rm 1
rm 2
mkpartfs primary fat32 0 3420
mkpartfs primary ext2 3420 3932
mkpartfs primary linux-swap 3932-3964
Example for a 2GB card playing it safe
#parted /dev/block/mmcblk0
#print (to verfiy we know what size card we are dealing with, the details should be straight forward)
rm 1
rm 2
mkpartfs primary fat32 0 1200
mkpartfs primary ext2 1200 1700
mkpartfs primary linux-swap 1700-1732
“End?” you need to place the last value for the linux swap eg.3964 for my 4GB card
#print (to verify we have the 3 partitions)
Next we need to “quit” parted and upgrade our ext2 partition to ext3
#upgrade_fs
Swap value is set to 30 currently, you can change this by modifying the “echo” value for swappiness in the a2sd.sh script
For a longer more detailed parted tutorial read thisthis
Wipe your Ext2/3/4 Partition
From the shell execute the following commands:
# mount -o rw /dev/block/mmcblk0p2 /system/sd
# cd /system/sd
# rm -rf /system/sd/*
# reboot recovery
That’s all.