[LBo] Installing Linux on a second drive. (Jisao)

[Geoff Jones]

Jisao wrote

> > *"*Hard Disk and ATAPI Device Channel Sharing:   There are several
> > reasons why optical drives
> > <http://www.pcguide.com/ref/hdd/if/ide/confPerformance-c.html#> (or
> > other ATAPI devices) should not be shared on the same channel as a fast
> > hard disk. ATAPI allows the use of the same physical channels as
> > IDE/ATA, but it is not the same protocol; ATAPI uses a much more
> > complicated command structure. Opticals are also generally much slower
> > devices than hard disks, so they can slow a hard disk down when sharing
> > a channel. Finally, some ATAPI devices cannot deal with DMA bus
> > mastering drivers, and will cause a problem if you try to enable bus
> > mastering for a hard disk on a channel they are using. "

I have not noticed any performance hits, but get the general principal.
If I switch hdc to hdb, I presume the grub mbr on hda is unaffected? - ie they 
will still be hd( 0, * ) and hd( 1, * ).
Then I can "shell" edit all the " root=dev/hdc* " references to hdb* ?
Then I will need to change all the mount-point references on all my distros ?
[ Perhaps I won't bother].

Geoff