Tektronix DAS 9221 Option 04, User Manual

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Appendix D: Loading System Software
D–8
DAS System User Manual
If you try to change the swap space size of an unformatted hard disk, an error
message will be displayed and the change request will be cancelled.
If the hard disk has never been formatted, you must format it before changing the
swap space size. A swap partition is created after the hard disk is formatted or
reformatted. The default size of the swap partition is 6 megabytes; you can
change it to 8 megabytes.
After the change swap space size operation completes, you should return to the
BOOT?> prompt by leaving the SCSI Hard Disk Format Utility (select the Exit
option in the Main Menu). You must then run the Make Utility to build the file
system and the Install Utility to reload the system software after changing the
size of swap partition. If you do not run these two utilities, the system will not
function properly. Both of these utilities are described later in this section.
The SCSI Hard Disk Format Utility lets you view the bad block list (a bad block
is an area on the hard disk that contains unusable bytes).
The Bad Block List display shows all known Manufacturer’s defects and Grown
defects (defects developed on the hard disk after it was shipped from the
factory). The bad blocks will be listed by head, cylinder, and sector. The partition
or file system block the defects are associated with is not given. It is not
necessary (nor possible) to add blocks to these lists.
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If the system software detects bad blocks while the system is running, the blocks
are automatically added to the bad block list by the SCSI hard disk drive.
Bad Block List Display