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Old 07-20-2004, 11:45 AM   #1
tuxrules
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Registered: Jun 2004
Location: Chicago
Distribution: Slackware64 -current
Posts: 1,144

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Question problem booting other Linux OS using GRUB


Hi all,
I've three linux OS on my deskop apart from winxp. I use grub to boot different OS. Right now, I have RH9, FC2 and Slackware 10. Few days back, something went wrong and i've to reinstall my OS's. I formatted my drive like this.
hda - 120 gb
hdb - 40 gb

/dev/hda - winxp ntfs

/dev/hdb1 - /boot -- for RH9 - 100 MB - primary
/dev/hdb2 - / -- for RH9 - 5 GB - primary
/dev/hdb3 - /home - 20 GB - primary

/dev/hdb4 - extended
/dev/hdb5 - swap - 1 GB
/dev/hdb6 - /boot -- for FC2 - 100 MB
/dev/hdb7 - / -- for FC2 - 5 GB

/dev/hdb8 - I created this partition for /boot for slackware but when i installed slackware it asked for only one partition (i.e for / ) so this partition is empty. Its 100 MB and ext2

/dev/hdb9 - / -- for slackware 10 - about 6 GB.

Now, If i want to boot FC2,
i've something like this in grub.conf

title FC2
(hd1,4) ---- should i use hd1,3 or hd1,4 ???
kernel /vmlinuz** ro root=/dev/hdb7 hdc=ide-scsi hdd=ide-scsi
initrd /initrd***.img

title slackware 10
(hd1,4)
kernel /vmlinuz** ro root=/dev/hdb9 hdc=ide-scsi hdd=ide-scsi
interestingly enough i started RH9 and mounted slackware partition and i could not find initrd...so i'm confused what should be the initrd entry for slackware in grub...

Right now i can only boot RH9. Before something messed up my computer I had dual boot linux (RH9 & FC2) with winxp and it worked pretty well. I played with grub then and go it right. But right now, I dont seem to get a handle on it.

Sorry, I'm at work and writing this off my head...so excuse me if this sounds jumbled up.

Any pointers...tips???
Thanks,
 
Old 07-21-2004, 01:40 PM   #2
jamuz
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Registered: Jun 2004
Location: MD USA
Distribution: SimplyMEPIS 6.0, openSuSE 10.2
Posts: 90

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grub uses 0-up numbering for both drives and partitions, while linux uses a-up for drives and 1-up for partitions. Therefore grub's hd(1,4) corresponds to linux's hdb5, your swap partition.

I think you should have:

title FC2
(hd1,5)
kernel /vmlinuz** ro root=/dev/hdb7 hdc=ide-scsi hdd=ide-scsi
initrd /initrd***.img

title slackware 10
(hd1,8)

Good luck!
 
Old 07-21-2004, 02:08 PM   #3
tuxrules
Senior Member
 
Registered: Jun 2004
Location: Chicago
Distribution: Slackware64 -current
Posts: 1,144

Original Poster
Rep: Reputation: 56
Thanks jamuz,
Figured out already!!!! I realized my mistake after posting...and since nobody answered...I didnt bother to close the case..

I am sorry for that...
case closed.
 
  


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