It can be very dangerous to attempt to import or varyon a disk that has been used as a boot disk because if it has the same logical volume names as those in your rootvg, it will render the system unbootable.
To view a disk without varying it on:
# lqueryvg -p hdisk0 -L
00c9b8fb00004c000000013a8c97f698.1 backup_lv 1
00c9b8fb00004c000000013a8c97f698.2 loglv01 1
00c9b8fb00004c000000013a8c97f698.3 fslv19 1
00c9b8fb00004c000000013a8c97f698.4 was70bkp 1
00c9b8fb00004c000000013a8c97f698.5 paging00 1
00c9b8fb00004c000000013a8c97f698.6 fixes_lv 1
The above disk would not be a problem, however if it contained a rootvg you should not vary it on:
# lqueryvg -p hdisk2 -L
00c9b8fb00004c0000000132da76b3ae.1 hd5 1
00c9b8fb00004c0000000132da76b3ae.2 hd6 1
00c9b8fb00004c0000000132da76b3ae.3 hd8 1
00c9b8fb00004c0000000132da76b3ae.4 hd4 1
00c9b8fb00004c0000000132da76b3ae.5 hd2 1
00c9b8fb00004c0000000132da76b3ae.6 hd9v
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