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Submitted by:
pmalenfa |
coolcommand
how to format a disk in IBM AIX |
Description
Sometimes, you need to return old disks (disk replacement, return after lease, selling your old hardware), but you want to ensure that all the data is erased before doing it (by formatting the disk).
For regular SCSI disks, just use the AIX diagnostics, but for some disk type, AIX Diagnostics don't support them.
So if you want to completely erase a disk, you can use the following method:
1- Remove the disk from any existing VG
# reducevg vg hdisk#
2- Get the disk size (in MB)
# bootinfo -s hdisk#
OR
# bootinfo -s vpath#
3- Erase the content (with the previously identified size)
# dd if=/dev/zero of=/dev/hdisk# bs=1024k count=
OR
# dd if=/dev/zero of=/dev/vpath# bs=1024k count=
4- Remove the disk
# rmdev -dl hdisk#
OR
# rmdev -dl vpath#
HINT: If you just want a to do a "quick format" (to prevent internal usage of this disk), just erase the first cylinders by putting "count=1" |
Example
dd if=/dev/zero of=/dev/hdisk33 bs=1024k count=$(bootinfo -s hdisk33) |
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Thursday September 9, 2010
