hello, I have fc3 on /dev/sda. I just successfully installed fc5 on a new drive /dev/sdb, but on reboot th e new os does not show up on the grub choose and boot screen. Info: /boot/grub.conf: # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd0,0) # kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00 # initrd /initrd-version.img #boot=/dev/sda default=1 timeout=20 splashimage=(hd0,0)/grub/splash.xpm.gz #hiddenmenu title Memtest86+ v1.65 kernel /memtest86+-1.65 title Fedora Core (2.6.11-11_FC3asl) root (hd0,0) kernel /vmlinuz-2.6.11-11_FC3asl ro root=/dev/VolGroup00/LogVol00 initrd /initrd-2.6.11-11_FC3asl.img GNU Parted 1.6.15 Copyright (C) 1998 - 2004 Free Software Foundation, Inc. This program is free software, covered by the GNU General Public License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. Using /dev/sda ---fc3 (parted) print Disk geometry for /dev/sda: 0.000-78533.437 megabytes Disk label type: msdos Minor Start End Type Filesystem Flags 1 0.031 101.975 primary ext3 boot 2 101.975 78528.669 primary lvm (parted) select /dev/sdb ---fc5 Using /dev/sdb (parted) print Disk geometry for /dev/sdb: 0.000-78533.437 megabytes Disk label type: msdos Minor Start End Type Filesystem Flags 1 0.031 101.975 primary ext3 boot 2 101.975 78528.669 primary lvm (parted) [root@c-65-34-233-245 dev]# ls adsp fd0u1743 md12 port tty11 tty49 ttyS28 ttyS65 audio fd0u1760 md13 ppp tty12 tty5 ttyS29 ttyS66 cdrom fd0u1840 md14 ptmx tty13 tty50 ttyS3 ttyS67 cdwriter fd0u1920 md15 pts tty14 tty51 ttyS30 ttyS68 console fd0u2880 md16 ram tty15 tty52 ttyS31 ttyS69 core fd0u3200 md17 ram0 tty16 tty53 ttyS32 ttyS7 cpu fd0u3520 md18 ram1 tty17 tty54 ttyS33 ttyS70 device-mapper fd0u360 md19 ram10 tty18 tty55 ttyS34 ttyS71 dm-0 fd0u3840 md2 ram11 tty19 tty56 ttyS35 ttyS72 dm-1 fd0u720 md20 ram12 tty2 tty57 ttyS36 ttyS73 dm-2 fd0u800 md21 ram13 tty20 tty58 ttyS37 ttyS74 dm-3 fd0u820 md22 ram14 tty21 tty59 ttyS38 ttyS75 dsp fd0u830 md23 ram15 tty22 tty6 ttyS39 ttyS8 dvd floppy md24 ram2 tty23 tty60 ttyS4 ttyS9 event0 full md25 ram3 tty24 tty61 ttyS40 urandom event1 hda md26 ram4 tty25 tty62 ttyS41 vcs fd hiddev0 md27 ram5 tty26 tty63 ttyS42 vcs1 fd0 hpet md28 ram6 tty27 tty7 ttyS43 vcs2 fd0CompaQ initctl md29 ram7 tty28 tty8 ttyS44 vcs3 fd0d360 input md3 ram8 tty29 tty9 ttyS45 vcs4 fd0D360 kmem md30 ram9 tty3 ttyS0 ttyS46 vcs5 fd0D720 kmsg md31 ramdisk tty30 ttyS1 ttyS47 vcs6 fd0h1200 log md4 random tty31 ttyS10 ttyS48 vcs7 fd0h1440 loop0 md5 root tty32 ttyS11 ttyS49 vcsa fd0H1440 loop1 md6 rtc tty33 ttyS12 ttyS5 vcsa1 fd0h1476 loop2 md7 sda tty34 ttyS13 ttyS50 vcsa2 fd0h1494 loop3 md8 sda1 tty35 ttyS14 ttyS51 vcsa3 fd0h1660 loop4 md9 sda2 tty36 ttyS15 ttyS52 vcsa4 fd0h360 loop5 mem sdb tty37 ttyS16 ttyS53 vcsa5 fd0H360 loop6 mice sdb1 tty38 ttyS17 ttyS54 vcsa6 fd0h410 loop7 mixer sdb2 tty39 ttyS18 ttyS55 vcsa7 fd0h420 lp0 mouse0 shm tty4 ttyS19 ttyS56 VolGroup00 fd0h720 lp1 mouse1 snd tty40 ttyS2 ttyS57 VolGroup01 fd0H720 lp2 net stderr tty41 ttyS20 ttyS58 XOR fd0h880 lp3 null stdin tty42 ttyS21 ttyS59 zero fd0u1040 MAKEDEV nvidia0 stdout tty43 ttyS22 ttyS6 fd0u1120 mapper nvidiactl systty tty44 ttyS23 ttyS60 fd0u1440 md0 parport0 tty tty45 ttyS24 ttyS61 fd0u1660 md1 parport1 tty0 tty46 ttyS25 ttyS62 fd0u1680 md10 parport2 tty1 tty47 ttyS26 ttyS63 fd0u1722 md11 parport3 tty10 tty48 ttyS27 ttyS64 [root@c-65-34-233-245 dev]# cd VolGroup00 [root@c-65-34-233-245 VolGroup00]# ls LogVol00 LogVol01 [root@c-65-34-233-245 dev]# cd VolGroup01 [root@c-65-34-233-245 VolGroup01]# ls LogVol00 LogVol01 It looks like I need to add to and rewrite to my /boot/grub.conf file. I am new to Linux and just want to be sure. My boot sequence starts with the floppy but I don't know how grub decides which file to read. I tried the rescue cd to see what the fc5 /boot/grub.conf file says but I am new to the command line and could't bring it up. can anyone help me? thank you, -ron-