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<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"><FONT face="Courier New">At this time F7 is booted and from that I used fdisk to find the <TT>hard drive with F7 64 bit. As you can see it finds all the partitions as </TT><TT>/dev/sdf. </TT></FONT><PRE style="MARGIN: 0em">
Command (m for help): p
Disk /dev/sdf: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdf1 1 1000 8032468+ 7 HPFS/NTFS
/dev/sdf2 1001 1141 1132582+ 82 Linux swap / Solaris
/dev/sdf3 * 1142 2500 10916167+ 83 Linux
/dev/sdf4 2501 19457 136207102+ 5 Extended
/dev/sdf5 2501 2585 682731 83 Linux
mount -t ext3 /dev/sdf3 /fc4
[root k5di ~]#
[root k5di ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda5 39674192 11689048 25937260 32% /
tmpfs 484484 0 484484 0% /dev/shm
/dev/sda7 14832416 8021112 6057860 57% /home
/dev/sda6 108865 28993 74251 29% /boot
/dev/sdf3 10574036 3867712 6160516 39% /fc4
[root k5di ~]#
</PRE><TT>Note the last entry in df. That is /dev/sdf3 mounted on this computer </TT><TT>which is /dev/sda5. </TT><PRE style="MARGIN: 0em"></PRE><TT>I used fdisk and mount and df, three tools to show you what a hard </TT><TT>drive has. No one can say that /dev/sdf doesn't exist on my computer. </TT><PRE style="MARGIN: 0em"></PRE><TT>Some say the /dev/sdf3 is just a designator of a partition on a hard </TT><TT>drive. To this I say there is nothing else! I can mount the designator </TT><TT>and I discover it is a partition. </TT><PRE style="MARGIN: 0em"></PRE><TT>Next I must turn off this computer and come up with the rescue CD so </TT><TT>that neither computer is boot up. In this case with fdisk I found both </TT><TT>hard drives have changed. The hard drive that had been /dev/sdf is now </TT><TT>dev/sda. The one which had been /dev/sda is now /dev/sdb. How did this </TT><TT>happen? </TT><PRE style="MARGIN: 0em"></PRE><TT>Finally I boot up the computer on /dev/sdf3 and it becom!
es /dev
/sda. </TT><TT>To my surprise I am booting it from /dev/sdb and not /dev/sdf. Here is </TT><TT>what my grub.conf looks like. </TT><PRE style="MARGIN: 0em">timeout=5
splashimage=(hd0,5)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.22.9-91.fc7)
root (hd0,5)
kernel /vmlinuz-2.6.22.9-91.fc7 ro root=/dev/sda5 quiet
initrd /initrd-2.6.22.9-91.fc7.img
title Fedora (2.6.22.7-85.fc7)
root (hd0,5)
kernel /vmlinuz-2.6.22.7-85.fc7 ro root=/dev/sda5 quiet
initrd /initrd-2.6.22.7-85.fc7.img
title Fedora (2.6.22.5-76.fc7)
root (hd0,5)
kernel /vmlinuz-2.6.22.5-76.fc7 ro root=/dev/sda5 quiet
initrd /initrd-2.6.22.5-76.fc7.img
title Fedora f7-64
rootnoverify (hd1,2)
makeactive
chainloader +1
</PRE><TT>Now if it seems to you that I do not understand what is happening </TT><TT>then I got the message across. </TT><PRE style="MARGIN: 0em"> </PRE></BLOCKQUOTE><PRE style="MARGIN: 0em">You have it all worked out. The system now makes whichever drive has the root </PRE><PRE style="MARGIN: 0em">filesystem /dev/sda. When you boot from the rescue disk the SATA bus on your system </PRE><PRE style="MARGIN: 0em">takes precedence over the IDE bus on your motherboard since neither harddrive has </PRE><PRE style="MARGIN: 0em">the root filesystem. When you boot F7-64 its root defines which drive shows as /dev/sda.</PRE><PRE style="MARGIN: 0em">Squishy, but it is the new way. The reccomendation has been to use labels on all your </PRE><PRE style="MARGIN: 0em">partitions and take care that they are all unique. Then use root=LABEL=bplpxwtz in the </PRE><PRE style="MARGIN: 0em">kernel line in grub as well as labels in fstab. I have a transitional motherboard </PRE><PRE styl!
e="MARG
IN: 0em">that has an IDE 100 bus and a separate IDE 133 bus. The drive on the IDE 133 bus </PRE><PRE style="MARGIN: 0em">which has Fedora was /dev/hde FC6 and previous incarnations. It now is /dev/sda </PRE><PRE style="MARGIN: 0em">in F7 and Rawhide. Care must be taken when setting up multiboot systems to get </PRE><PRE style="MARGIN: 0em">the unique partition labels.</PRE><PRE style="MARGIN: 0em"> </PRE><PRE style="MARGIN: 0em">Robert McBroom</PRE>
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