boot error in solaris x86

While doing OS patching to my x86 server i break mirror and i tried to boot server from the mirror disk and got following error ... now I am not able to boot from the mirror and primary both.

diskread: reading beyond end of ramdisk
start = 0x2000, size = 0x2000
failed to read superblock
diskread: reading beyond end of ramdisk
start = 0x8000, size = 0x800
failed to read superblock
panic: cannot mount boot archive
Press any key to reboot

can you please suggest, why is so
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rameshsukhi123Author Commented:
no help from the above doc still the same ...  i think there might be issue with the installgrub and update archive
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Unix OS

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