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Raffaele BELARDI <raffaele.belardi@××.com> posted |
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1209537833.6170.62.camel@×××××××××××××.com, excerpted below, on Wed, 30 |
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Apr 2008 08:43:53 +0200: |
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> The kernel starts to load, but panics because it is unable to find the |
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> root partition. When it stops it shows the available partitions, these |
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> include all the hard disk partitions but no USB key partition. In fact, |
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> if I omit the 'root' parameter from the grub shell the boot works fine |
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> but it uses the hard disk root partition instead of the USB one. |
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In addition to what the others have suggested... |
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Some machines apparently have (had?) trouble with parts of USB built-in. |
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If they are, the USB detects the root hubs but nothing else. I had this |
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problem at one point altho I wasn't trying to /boot/ from USB at that |
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point. The solution when not booting from USB is to build it as modules, |
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not built-in, but of course that complicates things somewhat if you are |
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booting from USB. In that case, you'd have to build USB as modules, and |
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then ensure those modules are on your initrd/initramfs (which I've never |
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had to use so have never worried about learning the technicalities of, so |
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I'll be of little help in that regard). |
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As indicated by the "(had?)" above, it's possible the issues have been |
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fixed now and USB builds in just fine. However, I still build these as |
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modules due to that experience. The specific modules involved... let me |
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double-check... usbcore and the appropriate minidriver(s), uhci/ohci/ |
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ehci_hcd. Of course, with them as modules, you'll likely have to build |
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other stuff (like usbhid, the usb keyboard/mouse input module) as modules |
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as well. |
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I should try again one of these days and see... as it'd be nice to have |
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it built-in since I'm using a USB mouse and keyboard now, and they |
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naturally fail if I boot to a backup root without modules for the kernel |
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I'm running. It wasn't a big deal when I was running ps2 based mouse/ |
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keyboard and USB was just "auxiliary" stuff anyway. |
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-- |
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Duncan - List replies preferred. No HTML msgs. |
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"Every nonfree program has a lord, a master -- |
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and if you use the program, he is your master." Richard Stallman |
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-- |
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