Speeding up boot process 3639

Erix

The BIOS on my motherboard has an option for this, called Quick Boot Mode. "If enabled, this feature will speed up the POST (Power On Self Test) routine after the computer is turned on. The settings are Enabled and Disabled. If Disabled, the POST routine will run at normal speed. I normally reboot only when I decide to run a new kernel (which I get every month or two, when the power fails longer than the 45 to 90 minutes my UPS will hold the machine up (happened once in about a year), or if I need to open the box to fiddle with things (which is very rare). Since I reboot so seldom, I disabled the Quick Boot Mode and let it run a (slightly) more thorough test.

I suppose removing useless init scripts would help slightly, but it might be immeasurable. You can have all the scripts you want inetc-rc.d-init.d (that's where they are in Red Hat, anyway), but they do not matter at all. What might matter is the links inetc-rc.d-rc-123456.d , but even there I doubt that would matter much, since links to useless scripts in ...-init.d should not be there. In any case, if you decide to do this, just remove the links in case you regret your action.

The biggest delays I get are setting up my two scsi controllers, and I really think that should be allowed. Since I have 4 SCSI drives on one, I have it set up to start one at a time so as not to annoy the power supply, and it waits until one drive is up to speed before starting the next. This can take a while for 10,000rpm drives.

I also have two IDE controllers and it rummages around there looking for devices, too. I cannot remember for sure, but my two NIC interfaces may need to be programmed as well when the BIOS runs.

-- .~. Jean-David Beyer Registered Linux User 85642. V PGP-Key: 9A2FC99A Registered Machine 241939. ^^-^^ 20:15:00 up 19 days, 13:53, 4 users, load average: 4.26, 4.25, 4.12