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Peter Humphrey <prh@××××××××××.uk> posted |
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200703131731.44114.prh@××××××××××.uk, excerpted below, on Tue, 13 Mar |
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2007 17:31:44 +0000: |
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> On Tuesday 13 March 2007 14:06:22 dustin@×××××××.us wrote: |
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>> On Tue, Mar 13, 2007 at 05:08:02PM +0800, P.V.Anthony wrote: |
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>> > I hope one day grub will allow "root=UUID=something" then the problem |
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>> > is completely solved. |
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>> |
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>> Not to be picky, but it's the kernel that parses that command line -- |
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>> grub just supplies it to the kernel. |
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> |
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> Are you sure? It seems to me that the "root=" parameter is to grub, to |
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> tell it where to find the kernel to which to pass the remaining |
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> arguments. |
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The "root (hd0,0)" (or whatever) line is for grub. |
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The "kernel ..." line, including the "root=/dev/whatever", or as we are |
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talking here "root=label" parameter, are passed to the kernel. It uses |
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that parameter to find and load its rootfs after the kernel has loaded |
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and done the pre-root detection and config stuff, but before the first |
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userspace program (normally init) starts and does the userspace boot |
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stuff, plus loading any additional kernel modules and doing a bit more |
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kernel config (sysctl and the like). |
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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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