Is the card mounted as /PD_Novel? That would seem to be what I am getting from "df" and "mount" output. It has the media sub-directories, ebooks, Music, Photos, Videos, and Digital Editions, and the total size is about right at 1GB with a vfat filesystem. Bumping that up with a higher capacity card would be nice for increasing onboard media storage since that is the default destination for many types of downloads.The /system, /data, /cache, /dev filesystems are all on /dev/block/mtdblock* partitions, so I suspect that is the SSD I think I have seen listed as part of the specs - probably about 1GB (like my OLPC XO with Fedora Core 11/Sugar/Gnome - amazing how much can still be squeezed into 1 GB). Those 4 partitions amount to about 600MB per df output, so 400MB as "spare" for upgrades, etc, makes sense - might be able to use some of that for non-permanent stuff, BUT NOT for swap, nor would I use any microSD cards for that (unless I monitored their inevitable degradation with plans to swap out for a new one several times a year at a guesstimate, and you would want the fastest possible card).Corrections - actually it is a 512 MB SSD based on this dmesg
output:2.029303] OneNAND Manufacturer: Samsung (0xec)Muxed OneNAND(DDP) 512MB 1.8V 16-bit (0x58)OneNAND version = 0x0121Chip support all block unlockScanning device for bad blocksBad eraseblock 436 at 0x03680000Bad eraseblock 659 at 0x05260000Creating 8 MTD partitions on "onenand": [Partition/mtdblocknum, sizes in decmial bytes]0x000000000000-0x000000200000 : 0 "bootloader" 2,097,152 0x000000200000-0x000000a00000 : 1 "kernel" 8,388,6080x000000a00000-0x000000b00000 : 2 "id" 1,048,5760x000000b00000-0x000001500000 : 3 "recovery" 10,485,7600x000001500000-0x000001800000 : 4 "ramdisk" 3,145,7280x000001800000-0x00000e000000 : 5 "system" 209,715,2000x00000e000000-0x000014400000 : 6 "cache" 104,857,6000x000014400000-0x000020000000 : 7 "userdata" 197,132,288 TOTAL (dec) 536,870,912