[gentoo-user] Problems moving /boot partiton
Hi, I am attempting to move my /boot partition on a specific machine to make way for a Windows XP dual boot. This machine is the only one with a graphics adapter that meets the requirements of my son's new game. and right now the machine is no longer booting.. Bummer OK, so I used to have /dev/sda1 /boot /dev/sda2 swap /dev/sda3 / and then some higher partitions, and a bunch of unused disk space. To get ready to add Windows I created two new partitions: /dev/sda9 /boot /dev/sda10 swap First I added the new swap to fstab, rebooted and made sure it was picked up correctly. I then copied everything in the old boot /dev/sda1 to the new boot /dev/sda9 and modified the grub.conf file on the new boot partition to ensure it was getting called with new names for the boot options after I rebooted. I also attempted to change the boot options themselves to point at the new boot partition. The old grub.conf and new grub.conf file examples are shown: OLD: title 2.6.16-gentoo-r2 root (hd0,0) kernel (hd0,0)/boot/bzImage-2.6.16-gentoo-r2 root=/dev/sda3 NEW: title New Layot 2.6.16-gentoo-r2 root (hd0,8) kernel (hd0,8)/boot/bzImage-2.6.16-gentoo-r2 root=/dev/sda3 When this was complete I ran grub using the commands grub root (hd0,8) setup (hd0) quit My understand of the above is that the root (hd0,8) says place the second part of grub on /dev/sda9 (drive 0, partition 8) while the second says place the first part of grub in the MRB. I then rebooted: 1) There is a long delay. I then get a message about the kernel file not being found. Grub drops me into the grub choice screen which is messed up text. 2) I do see the 'New Layout' names so it does seem to be finding /dev/sda9 with the new text 3) None of the options work. I've now rebooted using the Gentoo 2006.0 install CD. The kernels are on /dev/sda9 so it seems grub should be able to find them but it isn't. Can anyone suggest what I'm missing here? thanks, Mark -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Problems moving /boot partiton
Try executing this command from the grub command line: find /boot/bzImage-2.6.16-gentoo-r2 It'll return the partition where it finds the file.. It should be something like (ab0,x).. Then as usual enter the grub commands.. root (ab0,x) setup (ab0) quit Hope this helps, Farhan Ahmed -- Place : Bangalore, Karnataka, India GPG Key : 8BE90E98 WengoPhone ID : farhanahmed IRC Nick: farhanahmed / farhanahmed06 (irc.freenode.net) pgpp9KdAyOXlk.pgp Description: PGP signature
Re: [gentoo-user] Problems moving /boot partiton
On Sunday 30 April 2006 16:01, Mark Knecht wrote: Hi, I am attempting to move my /boot partition on a specific machine to make way for a Windows XP dual boot. This machine is the only one with a graphics adapter that meets the requirements of my son's new game. and right now the machine is no longer booting.. Bummer OK, so I used to have /dev/sda1 /boot /dev/sda2 swap /dev/sda3 / and then some higher partitions, and a bunch of unused disk space. To get ready to add Windows I created two new partitions: /dev/sda9 /boot /dev/sda10 swap First I added the new swap to fstab, rebooted and made sure it was picked up correctly. I then copied everything in the old boot /dev/sda1 to the new boot /dev/sda9 and modified the grub.conf file on the new boot partition to ensure it was getting called with new names for the boot options after I rebooted. I also attempted to change the boot options themselves to point at the new boot partition. The old grub.conf and new grub.conf file examples are shown: OLD: title 2.6.16-gentoo-r2 root (hd0,0) kernel (hd0,0)/boot/bzImage-2.6.16-gentoo-r2 root=/dev/sda3 NEW: title New Layot 2.6.16-gentoo-r2 root (hd0,8) kernel (hd0,8)/boot/bzImage-2.6.16-gentoo-r2 root=/dev/sda3 When this was complete I ran grub using the commands grub root (hd0,8) setup (hd0) quit My understand of the above is that the root (hd0,8) says place the second part of grub on /dev/sda9 (drive 0, partition 8) while the second says place the first part of grub in the MRB. I then rebooted: 1) There is a long delay. I then get a message about the kernel file not being found. Grub drops me into the grub choice screen which is messed up text. 2) I do see the 'New Layout' names so it does seem to be finding /dev/sda9 with the new text 3) None of the options work. I've now rebooted using the Gentoo 2006.0 install CD. The kernels are on /dev/sda9 so it seems grub should be able to find them but it isn't. Can anyone suggest what I'm missing here? thanks, Mark at the grub menu, can you get to the grub command line and do find /boot/grub/grub.conf? what drives/partitions does it show that being on? if you set this up right, it should find it on both. also, remember in fdisk to set the /dev/sda9 partion's boot flag. -- John Jolet Your On-Demand IT Department 512-762-0729 www.jolet.net [EMAIL PROTECTED] -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Problems moving /boot partiton
On 4/30/06, Farhan Ahmed [EMAIL PROTECTED] wrote: Try executing this command from the grub command line: find /boot/bzImage-2.6.16-gentoo-r2 It'll return the partition where it finds the file.. It should be something like (ab0,x).. Then as usual enter the grub commands.. root (ab0,x) setup (ab0) quit Hope this helps, Farhan Ahmed Hi Farhan and John, First, thanks for the quick responses. 1) I've booted again from the unversal Install CD. I have two consoles open - one is in the install environment and the second is in the chroot'ed environment. 2) In the install environment it tells me that I have /dev/sda3 mounted at /mnt/gentoo and /dev/sda9 mounted at /mnt/gentoo/boot 3) In the chroot'ed environment I run grub and then your find command. It says Error 15: File not found grub 4) In the install environment I can see the kernel file at /mnt/gentoo/boot/bzImage-2.6.16-gentoo-r2 5) In the chroot'ed environment I can see the kernel file at /boot/bzImage-2.6.16-gentoo-r2 6) I thoought grub supported tab completion but maybe that's only at boot time. While running grub in a console in the chroot'ed environment tabs are just moving the cursor to the right. Let me know what other info you might need to make another guess. Thanks again for your help! Cheers, Mark -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Problems moving /boot partiton
Mark Knecht wrote: 5) In the chroot'ed environment I can see the kernel file at /boot/bzImage-2.6.16-gentoo-r2 How did you copy sda1 to sda9? Probably on sda1 there was a symlink: boot - /, which you didn't preserve during copying. Either create this symlink, or remove /boot from kernel (hd0,8)/boot/bzImage-2.6.16-gentoo-r2. Benno -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Problems moving /boot partiton
On Sunday 30 April 2006 16:57, Mark Knecht wrote: On 4/30/06, Farhan Ahmed [EMAIL PROTECTED] wrote: Try executing this command from the grub command line: find /boot/bzImage-2.6.16-gentoo-r2 It'll return the partition where it finds the file.. It should be something like (ab0,x).. Then as usual enter the grub commands.. root (ab0,x) setup (ab0) quit Hope this helps, Farhan Ahmed Hi Farhan and John, First, thanks for the quick responses. 1) I've booted again from the unversal Install CD. I have two consoles open - one is in the install environment and the second is in the chroot'ed environment. 2) In the install environment it tells me that I have /dev/sda3 mounted at /mnt/gentoo and /dev/sda9 mounted at /mnt/gentoo/boot 3) In the chroot'ed environment I run grub and then your find command. It says Error 15: File not found grub 4) In the install environment I can see the kernel file at /mnt/gentoo/boot/bzImage-2.6.16-gentoo-r2 5) In the chroot'ed environment I can see the kernel file at /boot/bzImage-2.6.16-gentoo-r2 6) I thoought grub supported tab completion but maybe that's only at boot time. While running grub in a console in the chroot'ed environment tabs are just moving the cursor to the right. Let me know what other info you might need to make another guess. Thanks again for your help! Cheers, Mark the find command i meant for you to run was at boot time..hit e when the grub menu comes up, then c for command-line Now, did you get into fdisk and make sure your hda9 had a * in the boot column? -- John Jolet Your On-Demand IT Department 512-762-0729 www.jolet.net [EMAIL PROTECTED] -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Problems moving /boot partiton
On 4/30/06, Benno Schulenberg [EMAIL PROTECTED] wrote: Mark Knecht wrote: 5) In the chroot'ed environment I can see the kernel file at /boot/bzImage-2.6.16-gentoo-r2 How did you copy sda1 to sda9? Probably on sda1 there was a symlink: boot - /, which you didn't preserve during copying. Either create this symlink, or remove /boot from kernel (hd0,8)/boot/bzImage-2.6.16-gentoo-r2. Benno Benno, Thanks. That seems to have been the problem. I added the symlink in and the machine booted fine: lightning ~ # mount /boot/ lightning ~ # df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda3 9614148 7521752 1604020 83% / udev513756 304513452 1% /dev /dev/sda6 3850292 2501984 1152720 69% /usr/src /dev/sda7 11543016 3460680 7495968 32% /mnt/gentoo32 /dev/sda8 14428928 11624384 2071580 85% /home shm 513756 0513756 0% /dev/shm none513756 0513756 0% /tmp/jack /dev/sda9 101086 8202 87665 9% /boot lightning ~ # Thanks to everyone for all the help. Cheers, Mark -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Problems moving /boot partiton
On 4/30/06, Mark Knecht [EMAIL PROTECTED] wrote: When this was complete I ran grub using the commands grub root (hd0,8) setup (hd0) quit My understand of the above is that the root (hd0,8) says place the second part of grub on /dev/sda9 (drive 0, partition 8) while the second says place the first part of grub in the MRB. Looks like you solved your problem, but I think I can briefly explain what the above commands really mean: root (hd0,8): In this context, this tells grub that it can find the files required for installation on the first drive, 9th partition. This partition should contain [/boot]/grub/stage1 [/boot]/grub/stage2, [/boot]/grub/grub.conf, and also a stage1_5 for the filesystem. setup (hd0): This tells grub to install itself onto the first hard drive. Normally it writes the stage1 file to the MBR, and the stage1_5 to the blocks between the MBR and the start of the first partition. It also records the size of the stage1_5 and the root device (hd0,8) in the MBR. This is done so that at boot, the stage1 is loaded by the BIOS and begins executing. That in turn loads the stage1_5 from the known physical location on the disk, and passes control to the stage1_5 loader. That in turn looks at the filesystem (since it understands how to read the filesystem) to load the stage2 and grub.conf files. When stage2 is executed, that is when you see the menu appear with the entries from the grub.conf. HTH, -Richard -- gentoo-user@gentoo.org mailing list
