HP-UX Reference (11i v2 04/09) - 1M System Administration Commands A-M (vol 3)

idisk(1M) idisk(1M)

(Itanium(R)-based Processor Family Only)

The ﬁrst entry speciﬁes the number of partitions to create. The second speciﬁes an EFI partition of 100

megabytes. The last entry speciﬁes a HPUX partition consisting of all the remaining space on the disk

after the EFI partition has been created.

When creating partitions, the device ﬁle name must be that of the whole disk and must not have any par-

tition number bits set in the minor number. For disk devices, the last eight bits of the minor number

represent the option bits. For Itanium-based system’s disks, the last four option bits are used to indicate

the partition number. Since there are only four bits for partition number, only one to ﬁfteen partitions

are supported. For example, a device node with a minor number of 0x008001 would indicate a disk at

target eight, partition number one. A minor number of 0x00500F would indicate a disk at target 5 parti-

tion ﬁfteen. A minor number with no partition bits set would indicate the whole disk (.ie 0x008000 would

be the same disk as above but represent the whole disk and not a partition).

Note

idisk has been ported to Windows NT 4.0 and 2000.

RETURN VALUE

Exit values are:

0 Successful completion.

>0 Error condition occurred.

EXAMPLES

Create the partitions speciﬁed in the above description ﬁle, printing only the primary partition informa-

tion:

idisk -w -p -f ia64dsk.dat /dev/rdsk/c1t4d0

Create the partitions speciﬁed in the above description ﬁle, printing all available information (default),

redirecting input from stdin:

idisk -w -f - /dev/rdsk/c1t4d0 < ia64dsk.dat

Only read the disk, printing all tables (default) on the disk:

idisk /dev/rdsk/c1t4d0

Get the ﬁrst and last usable block for partitioning on the disk:

idisk -b /dev/rdsk/c1t4d0

Destroy all partition information on the disk:

idisk -R /dev/rdsk/c1t4d0

Restore partition information from either a good primary or alternate header or table to the header or

table that is bad:

idisk -w -r /dev/rdsk/c1t4d0

AUTHOR

idisk was developed by HP.