Create the alt_disk (Consider we have hdisk0 & hdisk1 on the rootvg)
sysdumpdev –s /dev/sysdumpnull --> If secondary dump device resides on hdisk1.
rmlv dump_lv --> Remove the dump lv
unmirrorvg rootvg hdisk1 --> unmirrror (Have to use the hdisk1 for alt_disk)
chpv –c hdisk1 --> clear the boot image on the hard disk1.
reducevg rootvg hdisk1 --> remove the hdisk1 from the rootvg disk.
alt_disk_copy -d hdisk1 --> Take the alt disk clone on hdisk1
lspv --> confirm the "altinst_rootvg" created on hdisk1
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