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Mounting problem in centos
I first installed Centos 6.3 and then Centos 5.6 because some of my tools are not compatible with the latest version. Since installation of Centos 5.6 i can not boot 6.3 anymore. Then I tried to mount 6.3 partition in Centos 5.6 but it gives the message :
/dev/sda7 already mounted or /mnt/centos busy Here is my disk details that i can find through fdisk command : Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 1 5 40131 de Dell Utility /dev/sda2 * 6 1480 11845632 7 HPFS/NTFS /dev/sda3 1480 33843 259952640 7 HPFS/NTFS /dev/sda4 33843 60802 216546335+ f W95 Ext'd (LBA) /dev/sda5 33843 41492 61438976 83 Linux /dev/sda6 41492 41556 512000 83 Linux /dev/sda7 41556 60802 154593280 8e Linux LVM Centos 5.6 is in sda 5 (that currently i am using) Centos 6.3 is in sda6 and sda7. It would be better if i could boot in both but if not at least i would like mount Centos 6.3 partition on 5.6 Thank You |
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the current and ONLY supported version in the old 5 series is 5.9 add the location of the 6.3 boot image to the 5.6 ( upgrade to 5.9 ASAP) grub.conf However the centos 5 install should have auto detected the cent6 install and labeled it as "other" in the grub config |
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If i upgrade to 5.9 do you think it will affect on existing software installations. I have cadence installed in 5.6. Thank You |
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There are very RARE exceptions But centos ONLY supports the ONE and only 1 current version of the RHEL supported series that is CentOS 5.9 and CentOS 6.3 ( soon to be 6.4) older versions will NEVER get any security/bug fixes to upgrade Code:
su - |
sda6 should be your /boot and sda7 which is the LVM partition should contain /root and swap as logical volumes if you selected the default installation. A LVM can not be directly mounted but you should be able to mount the logical volumes from version 5.6.
The steps to mount a logical volume: Code:
vgscan (Will search and display volume group names) |
Hi,thanks a lot for your reply. It upgraded to 5.9 without any problem.
One thing i forgot to tell is,when i was installing 5.6 i selected a new partition that i prepared in ext3 type for installing 5.6 . Then it prompted me to mount on somewhere and i selected /. Is it the reason for not being able to boot 6.3 and to not see that partition?? Thanks Quote:
---------- Post added 01-29-13 at 06:42 AM ---------- Thanks for your reply. i will try this. Quote:
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Hi....thanks a lot. this has worked. i could mount following the commands. However when i restarted its demounted again. Can you tell me what should i write in\
fstab file to automount this. And for dual boot i have edited the grub.conf as follows : ---------------------------------------------------- default=0 timeout=5 splashimage=(hd0,4)/boot/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.18-348.1.1.el5) root (hd0,4) kernel /boot/vmlinuz-2.6.18-348.1.1.el5 ro root=LABEL=/ rhgb quiet crashkernel=128M@16M initrd /boot/initrd-2.6.18-348.1.1.el5.img title CentOS (2.6.18-238.el5) root (hd0,4) kernel /boot/vmlinuz-2.6.18-238.el5 ro root=LABEL=/ rhgb quiet crashkernel=128M@16M initrd /boot/initrd-2.6.18-238.el5.img title CentOS (2.6.32-279.19.1.el6.x86_64) root (hd0,4) kernel /vmlinuz-2.6.32-279.19.1.el6.x86_64 ro root=/dev/mapper/vg_neuro-lv_root rd_NO_LUKS rd_LVM_LV=vg_neuro/lv_root rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=128M rd_LVM_LV=vg_neuro/lv_swap KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM LANG=en_US.UTF-8 rhgb quiet initrd /initramfs-2.6.32-279.19.1.el6.x86_64.img title Windows rootnoverify (hd0,1) chainloader +1 -------------------------------------------------------------- the third one is what i added for Centos 6.3 and i actually copied that part directly from previous grub.conf file.But its not working. Can you advise please thanks. Quote:
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The fstab entry should be like:
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