重新下载了一下内核，启动后插入U盘，出现以下信息，然后就停留在最后一句“Attatched SCSI removable disk",不动了。

[root@FriendlyARM /]# usb 1-1: new full speed USB device using s3c2410-ohci and address 6
usb 1-1: New USB device found, idVendor=0951, idProduct=1642
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: DT 101 G2
usb 1-1: Manufacturer: Kingston
usb 1-1: SerialNumber: 001CC0EC32FEFBB1570F24E9
usb 1-1: configuration #1 chosen from 1 choice
scsi4 : SCSI emulation for USB Mass Storage devices
scsi 4:0:0:0: Direct-Access     Kingston DT 101 G2        1.00 PQ: 0 ANSI: 4
sd 4:0:0:0: Attached scsi generic sg0 type 0
sd 4:0:0:0: [sda] 7567964 512-byte logical blocks: (3.87 GB/3.60 GiB)
sd 4:0:0:0: [sda] Write Protect is off
sd 4:0:0:0: [sda] Assuming drive cache: write through
sd 4:0:0:0: [sda] Assuming drive cache: write through
sda: sda1
sd 4:0:0:0: [sda] Assuming drive cache: write through
sd 4:0:0:0: [sda] Attached SCSI removable disk

请教是怎么回事？？

我的U盘是4G的，挺小，应该没有分区表，格式是FAT32的，没有问题。
如果在系统开机前先插好，再系统上电的话，系统启动完成，U盘也识别了，启动信息如下：
Freeing init memory: 132K
/etc/init.d/rcS: line 20: can't create /proc/sys/kernel/hotplug: nonexistent directory
scsi 0:0:0:0: Direct-Access     Kingston DT 101 G2        1.00 PQ: 0 ANSI: 4
sd 0:0:0:0: Attached scsi generic sg0 type 0
sd 0:0:0:0: [sda] 7567964 512-byte logical blocks: (3.87 GB/3.60 GiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] Assuming drive cache: write through
sda: sda1
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] Attached SCSI removable disk
FAT: utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!


打开 udisk，是内容正确的。

请教这是为什么？谢谢啊

[root@FriendlyARM /]# cd dev
[root@FriendlyARM /dev]# ls
ADC                 rtc                 tty41
COUNT               rtc0                tty42
DT                  shm                 tty43
adc                 tty                 tty44
backlight           tty0                tty45
console             tty1                tty46
cpu_dma_latency     tty10               tty47
device              tty11               tty48
fb0                 tty12               tty49
full                tty13               tty5
i2c                 tty14               tty50
input               tty15               tty51
input1              tty16               tty52
keyboard1           tty17               tty53
kmsg                tty18               tty54
leds                tty19               tty55
loop                tty2                tty56
mem                 tty20               tty57
mtd0                tty21               tty58
mtd0ro              tty22               tty59
mtd1                tty23               tty6
mtd1ro              tty24               tty60
mtd2                tty25               tty61
mtd2ro              tty26               tty62
mtd3                tty27               tty63
mtd3ro              tty28               tty7
mtd4                tty29               tty8
mtd4ro              tty3                tty9
mtdblock0           tty30               ttySAC0
mtdblock1           tty31               ttySAC1
mtdblock2           tty32               ttySAC2
mtdblock3           tty33               urandom
mtdblock4           tty34               vcs
network_latency     tty35               vcs1
network_throughput  tty36               vcsa
null                tty37               vcsa1
ptmx                tty38               watchdog
pts                 tty39               zero
random              tty4
root                tty40


为什么没有udisk呢？？