Dual Boot Problem - Linux BootLoaders

[J.Markoll]

Tim Frost a écrit :
>>=-=-=-=-=-=-=-=-=-=-=-=
>>
>>root            (hd0,6)
>>kernel          /boot/vmlinuz-2.6.12-9-686 root=/dev/hda8 ro quiet
>>
>>=-=-=-=-=-=-=-=-=-=-=-=
>>instead of root=/dev/hda7

> Do you have a separate /boot partition?
Never. I typically make a / a swap a /usr and sometimes a /var and then 
the /home but the /boot, never. (Not yet, at least).

> My disk has:
> tim at marvin:~$ sudo fdisk -l

> Disk /dev/hda: 200.0 GB, 200049647616 bytes
> 255 heads, 63 sectors/track, 24321 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes

>    Device Boot      Start         End      Blocks   Id  System
> /dev/hda1               1          12       96358+  83  Linux
> /dev/hda2              13        7307    58597087+  83  Linux
> /dev/hda3            7308       24321   136664955    5  Extended
> /dev/hda5            7308       15209    63472783+  83  Linux
> /dev/hda6           15210       23719    68356543+  83  Linux
> /dev/hda7           23720       24321     4835533+  82  Linux swap /
> Solaris
> tim at marvin:~$ mount
> /dev/hda2 on / type ext3 (rw,errors=remount-ro)
> /dev/hda1 on /boot type ext3 (rw)
> /dev/hda5 on /home type ext3 (rw)
> /dev/hda6 on /var type ext3 (rw)

> and grub has:
> title		Ubuntu, kernel 2.6.12-9-386 
> root		(hd0,0)
> kernel		/vmlinuz-2.6.12-9-386 root=/dev/hda2 ro quiet splash
> initrd		/initrd.img-2.6.12-9-386
> savedefault
> boot

> This means that grub is operating inside the /boot partition /dev/hda1 =
> (hd0,0), but loading /dev/hda2 as the file system root directory.
yes, with a /boot separated and 'living' at hda2  :)


 > Disk /dev/hdb: 30.6 GB, 30606151680 bytes
 > 255 heads, 63 sectors/track, 3720 cylinders
 > Units = cylinders of 16065 * 512 = 8225280 bytes

 >   Device Boot      Start         End      Blocks   Id  System
 > /dev/hdb1               1         802     6442033+  83  Linux

Mine:
Disk /dev/hda: 81.9 GB, 81964302336 bytes
16 heads, 63 sectors/track, 158816 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes

    Device Boot      Start         End      Blocks   Id  System
/dev/hda1   *           1        6525     3288568+  83  Linux
/dev/hda2            6526      158816    76754633    5  Extended
/dev/hda5            6526        8611     1051312+  82  Linux swap / Solaris
/dev/hda6            8623       31142    11349891   83  Linux
/dev/hda7           31142       40832     4883728+  83  Linux
/dev/hda8           40832       54395     6835626   83  Linux
/dev/hda9           54395       67958     6835626   83  Linux
/dev/hda10          67958       89266    10739421   83  Linux
/dev/hda11          89267      158816    35053200   83  Linux


Several OS, cfdisk would be more accurate:
Pri/Log    Espace libre                                       0,04  *
hda5    NC Logique    Linux swap / Sol     1076,55  * 
             Logique    Espace libre                       5,78  *
hda6       Logique    Linux ext3                          11622,33  *
hda7       Logique    Linux ext3         [/]               5000,98  *
hda8       Logique    Linux ext3         [/usr]            6999,72  *
hda9       Logique    Linux ext3         [/var]            6999,72  *
hda10      Logique    Linux ext3         [null]           10997,20  *
hda11      Logique    Linux ext3         [/home]          35894,51  *

>>what a fun! :(
>>I keep erasing the 'splash' line, it puts it back each time, too.
> You may be able to eliminate the "splash" from new kernels, by changing
> the line 
> 	# nonaltoptions=quiet splash
> to read as follows:
> 	# nonaltoptions=quiet 
> (This works because the options in that commented line are copied to
> each linux stanza created during a kernel upgrade.)

> Of course, you still need to remove the "splash" option from the
> existing kernel entries, since that line is only used when a new kernel
> is installed.
Ok. What about kernel compilation when kernel updates come so frequently ?
Is it worth it ? (I haven't gone into reading docs about compilation 
until now, and do not want to take time momently) so is it interesting 
to modify just one option ?

>>Thanks, and best greetings, Joyce Markoll.



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