Ubuntu – How is SFS partition different than other

partitioning

i have SFS partitions. how this partition is different than other linux partition? can it be converted to other and vice versa without losing data?

aneal@ubuntu:~$ sudo fdisk -l

Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x97646c29

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1        1531    12290016+  42  SFS
/dev/sda2   *        1531        1543      102400   42  SFS
/dev/sda3            1543       14070   100618240   42  SFS
/dev/sda4           14070       38914   199559512   42  SFS

Disk /dev/mmcblk0: 3965 MB, 3965190144 bytes
49 heads, 48 sectors/track, 3292 cylinders
Units = cylinders of 2352 * 512 = 1204224 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

        Device Boot      Start         End      Blocks   Id  System
/dev/mmcblk0p1   *           4        3293     3868160    b  W95 FAT32

Best Answer

These are dynamic disks, fairly common with Win 7. Usually if you try to create a 5th partition it offers to convert to dynamic. What it means is that you could have other partitions not shown in the MBR partition table (that Ubuntu won't see).

Check this out for some options for converting back: http://ubuntuforums.org/showthread.php?t=1692248