On 2012/08/07 04:29, Mikkel L. Ellertson wrote:
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On 08/06/2012 11:29 PM, jdow wrote:
On 2012/08/06 19:17, Mikkel L. Ellertson wrote:
Disabling it because the system you are compiling the kernel for
will not support the hardware. No need for SATA, PCI, or cardbus
stuff on a system that only has PCMCIA slots for expansion. You do
not need the USB drivers because it does not have, USB hardware, and
you can not find PCMCIA USB cards. (I have a cardbus USB card, but
that does not help.) But this is not something most people run into.
Compiling a kernel for a laptop will let you eliminate a lot of
drivers because you only have limited hardware changes...
A server that is not going to get hardware changes.
...
Mikkel
Mikkel, I have done this once or twice in antediluvian days gone by.
Then I discovered a property of Windows. If your motherboard goes
bad and you can't replace it with an exact replacement the system and
all other software installed on that disk are suddenly useless. (Yes,
you can at least recover the files. But you cannot recover the
installs.)
It is far better to keep the OS flexible so that on boot it adapts to
the system you are running. The better the OS as installed on the disk
does this the easier the effort to get up and running becomes.
I may recompile the kernel these days; but, the intent of the
recompile
is to ADD features compiled out rather than the other way around.
{^_^}
The only problem with that argument is that if the hardware has
changed enough that you can not boot with your custom kernel, then
you will need a new initrd to boot with a generic kernel. So you
have to boot from some type of recovery media in any case.
It can actually be easier to fix with a custom kernel - boot from
recovery media, do a chroot, and install the latest generic kernel
RPM. Let the post install script build the new initrd.
Mikkel
That is why adding things is better than subtracting them. Adding, for
example, a seldom used filesystem can survive a transplant to a whole
new computer and still work, modulo connecting a disk that uses that
filesystem. Um, dongles that take PATA and convert it to USB are REALLY
nice to keep around for this reason.
Removing PATA "because I'll never use it" leads to you discovering
"never" is often not that far away. (PATA seems to still persist on
certain classes of motherboard, I note. IMAO this is a good thing
to keep old media readable. I also don't throw away old disks that
still spin up and contain data. Well, OK, I'm a packrat. I don't
throw ANY disks away. I have been known to convert their platters
to ersatz wind chimes, though.)
{^_-}
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