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Old 12-21-2013, 07:42 PM   #1
Registered: Dec 2003
Distribution: Slack 14.1 3.18.1
Posts: 146

Rep: Reputation: 1
Installing Slack {Current} onto a USB HD

I boot off my DVD and get to the Setup. I fdisk and partition and write to my /dev/sdc and all works fine. I then install from DVD onto the USB HD and then I install a boot setup to my USB Thumb which is also recognized. I skip LILO and reboot.. It loads the Thumb Drive and also mentions loading my standard /sda Drives but then I get a Kernel Panic and it does not see my /sdc (USB HD). I have also tried LILO and the new ELILO as by default my MB uses UEFI but I also changed it to Legacy mode etc.. Basically I believe I have tried most options. It seems that during boot my PC has not yet loaded the USB HD in time for it to boot onto it?

Any suggestions?
Old 12-22-2013, 08:47 AM   #2
Didier Spaier
LQ Addict
Registered: Nov 2008
Location: Paris, France
Distribution: Slint64-14.2.1 on Lenovo Thinkpad W520
Posts: 8,198

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Append rootdelay=20 to your command line, then if it works append that to your lilo.conf then rerun lilo. USB HD need some time to spin and before they do / won't be accessible.

Also, better name you root device by UUID or by LABEL in /etc/lilo.conf and /etc/fstab, as devices are named in the /dev tree in the order they become available to the kernel and this order can change in case of removable devices.

Last edited by Didier Spaier; 12-22-2013 at 08:55 AM.
Old 12-24-2013, 06:50 AM   #3
Registered: Nov 2003
Location: Bristol, Britain
Distribution: Slackware
Posts: 474

Rep: Reputation: 47
I had exactly the same problem. It seems also that rootdelay hasn't worked on 14.0 or 14.1. It last worked on 13.37.

The only alternative is to create an initrd.gz or rebuild the kernel.

initrd.gz is the quickest option if you have an already working system

This worked for me
mkinitrd -c -k 3.10.17-smp -m usb-storage:ehci-pci:ehci-platform -u -w 10 -f ext4 -r /dev/sdb1
The resultant initrd.gz needs to be moved to the boot directory of your USB disk.

See also -

Old 12-27-2013, 04:44 AM   #4
Registered: Sep 2009
Distribution: Slackware
Posts: 138

Rep: Reputation: 19
Initrd was the solution that worked for when I had the same problem



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