Recovering from Disk Mirror failure

Now through Documentations I found out that when one faces a disk failure in
disk mirroring in windows 2003 he should first edit the & then boot
into the OS, now I have this question that why don't one do a separate entry
in the boot.ini normal time, & when disk crashes all one has to do is select
the below entry rather then booting from alternate disks etc.
what do you say ? am I correct in this ?