Recently bought two Seagate 2TB drives and have them connected to my Gentoo server via a 2xSATA -> IDE converter. BIOS can see both drives and reports the size correctly however when i boot to Gentoo there is no /dev/hda or /dev/hdb The actual install is on a mirrored 1.5TB array which appears as /dev/sda. I'm thinking maybe i don't have the correct IDE modules or something but that is a bit out of my linux knowledge. Any ideas?
It shows the 2 1.5TB sata hdd's /dev/sda and /dev/sdb which are mapped from /dev/sg0 and /dev/sg1 there a hardware mirror using the onboard RAID controller. at work atm so i can't get the actual output
You could run a live distro to check if it detects all HDDs. I don't know how gentoo works but maybe you have to add some lines on fstab file (or gentoo equivalent) to indicate the system the mount point of those HDDs.
here's what fdisk -l outputs /dev/sda and /dev/sdb are the mirrored 1.5TB drives. Code: Disk /dev/sda: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0xc121e16a Device Boot Start End Blocks Id System /dev/sda1 * 1 12 96358+ 83 Linux /dev/sda2 13 135 987997+ 82 Linux swap / Solaris /dev/sda3 136 6215 48837600 83 Linux /dev/sda4 6216 182401 1415214045 83 Linux Disk /dev/sdb: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x00000000 Disk /dev/sdb doesn't contain a valid partition table There are no hd devices found Code: ls /dev/hd* ls: cannot access /dev/hd*: No such file or directory Fstab reads Code: /dev/sda1 /boot ext2 noauto,noatime 1 2 /dev/sda3 / ext3 noatime 0 1 /dev/sda2 none swap sw 0 0
Sata drives were/are historically slung in with scsi that's why you don't have any /dev/hd. sda has been correctly set up, though sda4 isn't mounted any where you are probably accessing sda3 with out relising it since its mounted at root. sdb needs to be partitioned fsdisk can do it but you might be more comfortable with a gui based portioning program. Once you've done that you can adjust fstab to mount the disk where you like ditto sda4. sorry mate, misread the op. Do the adaptors show under a live cd? or windows? Did you compile the kernel your self? You may have missed out the ide modules in which case they wont show, a precompiled kernel would normally include them. But its better to find out if the adaptors work properly before running of and recompiling your kernel.
The adapter is transperant, both drives appear in bios and show the correct size. Is there a way i can see if the IDE modules are loaded?
run lsmod and post the result, i'm not sure what the module is called of the top of my head, but i or someone else should recognise it. That will tell us if the module is loaded, if that fails we'll need to try and work out what its called and run insmod to load it, if that fails its probably not compiled in.
lsmod just returns the headings Code: Module Size Used by i'm guessing this means my install might be broken?
Code: speaker / # zcat /proc/config.gz gzip: /proc/config.gz: No such file or directory i'm going to take a guess and say that's a bad sign...
Nah it just means you don't have ikconfig enabled. I assume this is a custom kernel do you still have the .config by any chance?
You probably didn't include your IDE drivers in your kernel... add them in and reboot with that kernel...
i'm not sure on how to compile a custom kernal, it might be possible that i modified it while it was installing? is there a good guide you guys know of to recompile the kernal on Gentoo so i can add in the drivers?
I've not used gentoo in years but the handbook was brilliant last time I tried. I assume you did the manual configuration rather then the genkernel (or else you'd have ikconfig enabled) and didn't include the IDE modules which is why you can't see the hard disks.
I did some reading and have used make menuconfig to create the new kernal with IDE and RAID support. Problem now is when i go to mount /boot i get a message "mount: unknown filesystem type 'ext2'" from what i understand this means my kernal is missing ext2 support and needs to be recompiled from scratch. How do i go about doing this?
It exactly the same steps as you did last time. I assume that you can't boot so you'll need to boot a liveCD to do it. May I suggest that you boot the gentoo liveCD and use genkernel to make a backup kernel for when you are playing around with the custom kernel that way you can always boot. But anyway to recover the system boot a liveCD mount the file systems under /mnt/chroot/ or similar. Code: mkdir -p /mnt/chroot/ mount $rootfs /mnt/chroot/ mount $bootfs /mnt/chroot/boot ... etc zcat /proc/config.gz > /mnt/chroot/tmp/config chroot /mnt/chroot/ emerge genkernel genkernel --no-menuconfig --kernel-config=/tmp/config --install all I'd use the config file from /mnt/chroot/tmp/ to make a generic kernel for when things go fubar you can still boot without a liveCD then if you want you can also make your custom kernel. edit: I've not used gentoo (and therefore genkernel/emerge) in a long time so I'd check the command though I think it is right
