You can try

#fdisk /dev/rdsk/c5d0t0p0

to delete all the partitions and exit. You don't have to create EFI partition in fdisk(1M) because it only create the PMBR but not the EFI label. Then try format -e again.

The panic sounds like a bug in USB driver to me.

Larry



于 2011/6/22 13:48, Kitty Tam 写道:
I cannot run format -e to change it since it will crash my sys or
the server I am trying to attach the disk to.

It is a 2.5TB drive for sure.

On 06/22/11 13:12, Larry Liu wrote:

4. c5t0d0<WD-Ext HDD 1021-2021-291.10GB>
/pci@0,0/pci108e,5351@1d,7/storage@5/disk@0,0
Specify disk (enter its number):

pfexec fdisk /dev/rdsk/c5t0d0p0
Total disk size is 60800 cylinders
Cylinder size is 80325 (512 byte) blocks

Cylinders
Partition Status Type Start End Length %
========= ====== =========== ===== === ====== ===
1 EFI 0 7600 7601 14

Your EFI partition only has 7601 cylinders. That is why format(1M) can only see 291GB.
7601 * 80325 (Cylinder size) * 512 = 291GB

Larry

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