Installation guide

Cross-platform bootable tapes are not supported. Using a bootable tape on
a platform other than the one on which it was created is not supported. For
example, you cannot create a tape on a 4100 system and boot from it on a
1000A system.
11.2.2 Using the btcreate Utility
To build a bootable SAS kernel on UFS or AdvFS file systems only, you
must use the btcreate utility. This section provides an overview of the
information you must have to create the SAS kernel on tape.
The btcreate utility provides both a noninteractive and interactive user
interface. Both require that you have superuser privileges before using. To
execute, this utility requires 156000 blocks (512 bytes per block) of disk
space in the /usr directory.
11.2.2.1 Gathering Information
To prepare for a btcreate session, you must have the following
information available:
• Name of the configuration file in the /usr/sys/conf directory.
• Name of the disk partition (for example, rz2e) where the miniroot file
system is to reside. Minimum size needed on the disk is 30720 blocks
(512 bytes per block). This disk partition should not be mounted when
btcreate is executed.
• Name of the tape device, for example nrmt0h, where the SAS kernel
and file systems are to reside.
• Device name, mount point, and type of each file system (UFS or AdvFS)
that you want to back up to the tape device. The following shows valid
UFS and AdvFS entries:
UFS:
/dev/rz1a / ufs
/dev/rz1g /usr ufs
AdvFS:
root_domain#root / advfs
usr_domain#usr /usr advfs
_____________________ Note _____________________
Do not select swap partitions for file system backups.
11–4 Administering the Archiving Services