Bug report added
Karl Larsen
k5di at zianet.com
Fri Oct 26 18:04:22 UTC 2007
mcforum at bellsouth.net wrote:
>
> At this time F7 is booted and from that I used fdisk to find the
> hard drive with F7 64 bit. As you can see it finds all the
> partitions as /dev/sdf.
>
> 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 ~]#
>
>
>
> Note the last entry in df. That is /dev/sdf3 mounted on this
> computer which is /dev/sda5. I used fdisk and mount and df, three
> tools to show you what a hard drive has. No one can say that
> /dev/sdf doesn't exist on my computer. Some say the /dev/sdf3 is
> just a designator of a partition on a hard drive. To this I say
> there is nothing else! I can mount the designator and I discover
> it is a partition. Next I must turn off this computer and come up
> with the rescue CD so that neither computer is boot up. In this
> case with fdisk I found both hard drives have changed. The hard
> drive that had been /dev/sdf is now dev/sda. The one which had
> been /dev/sda is now /dev/sdb. How did this happen? Finally I boot
> up the computer on /dev/sdf3 and it becom! es /dev /sda. To my
> surprise I am booting it from /dev/sdb and not /dev/sdf. Here is
> what my grub.conf looks like.
>
> 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
>
>
>
>
> Now if it seems to you that I do not understand what is happening
> then I got the message across.
>
>
>
> You have it all worked out. The system now makes whichever drive has the root
> filesystem /dev/sda. When you boot from the rescue disk the SATA bus on your system
> takes precedence over the IDE bus on your motherboard since neither harddrive has
> the root filesystem. When you boot F7-64 its root defines which drive shows as /dev/sda.
> Squishy, but it is the new way. The reccomendation has been to use labels on all your
> partitions and take care that they are all unique. Then use root=LABEL=bplpxwtz in the
> kernel line in grub as well as labels in fstab. I have a transitional motherboard
> that has an IDE 100 bus and a separate IDE 133 bus. The drive on the IDE 133 bus
> which has Fedora was /dev/hde FC6 and previous incarnations. It now is /dev/sda
> in F7 and Rawhide. Care must be taken when setting up multiboot systems to get
> the unique partition labels.
>
> Robert McBroom
Thanks and glad to hear another person has the same things
happening. I sounds as if it is a BIOS thing and my new computer has an
odd bios that I can reach. Easy to miss important tabs :-)
I will talk about all the good and bad on this computer brought out
loading F7 and getting it working. Most is not F7 problems of any kind.
--
Karl F. Larsen, AKA K5DI
Linux User
#450462 http://counter.li.org.
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