在正常的情況下，應該在開機磁碟建立程式裡下面的選項:從這個磁碟開機時....是可以選的，
但是升上10.04後LiveUSB製作程式就不能選選項了...
而安裝好後的確也無法保留設定檔和文件...

有試過先移除usb-creator,-common,-gtk在重新安裝過了
但還是一樣無法選取...
附圖:


因為要在上面安裝smplayer帶去學校放DVD，所以急需這個功能~
P.S.今天用Totem結果字幕lag，不過總比XP好多了...

如果急著用，參考
https://help.ubuntu.com/community/LiveCD/Persistence
的這個部份
-------------------------------------------------
Using a Loopback File

Instead of using a USB stick, you can use a file on your hard disk to store persistent information. The file must be named casper-rw and must be on the root of a partition. This partition can be any type that can be mounted automatically (e.g. vfat or ext3). (The persistent mode still works, if the file is created on the root partition of an USB stick.)

The following commands assume that a partition is mounted at /media/hda1. You can use any partition; even / will do fine. A file 128 MB in size will be created on this partition. To change the size, modify the count parameter of the "dd" command.

$ dd if=/dev/zero of=/media/hda1/casper-rw bs=1M count=128
128+0 records in
128+0 records out
134217728 bytes transferred in 0.947819 seconds (141606919 bytes/sec)

$ mkfs.ext3 /media/hda1/casper-rw
mke2fs 1.38 (30-Jun-2005)
/media/hda1/casper-rw is not a block special device.
Proceed anyway? (y,n) y
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
32768 inodes, 131072 blocks
6553 blocks (5.00%) reserved for the super user
First data block=1
16 block groups
8192 blocks per group, 8192 fragments per group
2048 inodes per group
Superblock backups stored on blocks:
8193, 24577, 40961, 57345, 73729

Writing inode tables: done
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 23 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.

------------------------------------------------------------------
簡單說
1.(建立casper-rw)
dd if=/dev/zero of=/media/你的USB碟/casper-rw bs=1M count=128(容量)
2.(應該能支援mkfs.ext4了)
mkfs.ext3 /media/你的USB碟/casper-rw
3.在你的USB碟syslinux目錄下，尋找一個text.cfg檔，用文字編輯器
在append後面的參數中插入一個persistent的參數

嗯,謝謝脫線大師囉XD。
現在就去試試看~