各位大神；

   我现在有一台cisco 从507R-E交换机启动报下列错误请各位指点。

Checking the partition table and boot sector...
Checking FAT, Files and Directories...
Reclaiming unused space...
Updating FAT...
 Rom Monitor Program Version 12.2(44r)SG5
 CPU Rev: 2.1, Board Rev: 8, Board Type: 103, CPLD Nexu Rev: 9
 Chassis: WS-C4507R-E

Front Panel Phy is Bcm5482s
Got Mac Address: 00:25:84:1e:21:fc

 MAC Address  : 00-25-84-1e-21-fc
 Ip Address   : Not set.
 Netmask      : Not set.
 Gateway      : Not set.
 TftpServer   : Not set.
rommon 1 >
rommon 1 >
rommon 1 >boot
 File has bad file magic number:      0x0. Is it a valid file?
 boot: can not load "bootflash:"
rommon 2 >boot bootflash:cat4500e-ipbase-mz.122-52.XO.bin
 File has bad file magic number:      0x0. Is it a valid file?
 boot: can not load "bootflash:cat4500e-ipbase-mz.122-52.XO.bin"
rommon 3 >

cisco c4507R-E 交换机启动不起来