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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