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| 12 | <LINK REL="HOME" HREF="index.html" TITLE=" Mondo Rescue and Mindi Linux HOWTO "><LINK REL="UP" HREF="faq.html" TITLE=" Troubleshooting/FAQ "><LINK REL="PREVIOUS" HREF="faqgeneral.html" TITLE=" General "><LINK REL="NEXT" HREF="faqinstallation.html" TITLE=" Installation "></HEAD>
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| 20 | Mondo Rescue and Mindi Linux HOWTO</TD>
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| 26 | <TD WIDTH="80%" VALIGN=BOTTOM>
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| 27 | <P ALIGN=CENTER>
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| 28 | Chapter 10. Troubleshooting/FAQ</TD>
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| 29 | <TD WIDTH="10%" VALIGN=BOTTOM>
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| 30 | <P ALIGN=RIGHT>
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| 35 | </P>
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| 36 | </DIV>
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| 37 | <H1 CLASS="SECTION" ALIGN=LEFT>
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| 38 | <A NAME="FAQBOOTING"></A>10.3. Kernel/Linux/Booting</H1>
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| 39 | <DL>
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| 40 | <P ALIGN=LEFT>
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| 41 | <DT CLASS="mvd-P">Q: <A HREF="faqbooting.html#AEN601">How do I know
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| 42 | if Mondo works with my Linux distro?</A><BR>
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| 43 | <DT CLASS="mvd-P">Q: <A HREF="faqbooting.html#AEN607">When I try to
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| 44 | boot from the Mondo CD, it says, "VFS: Unable to mount root
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| 45 | fs." I am using a Debian distro. What do I do?</A><BR>
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| 46 | <DT CLASS="mvd-P">Q: <A HREF="faqbooting.html#AEN612">When I try to
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| 47 | boot from the Mondo CD, it says, "Cannot mount root fs - kernel
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| 48 | panic," or something similar. What do I do?</A><BR>
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| 49 | <DT CLASS="mvd-P">Q: <A HREF="faqbooting.html#AEN618">When I try to
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| 50 | boot from the Mondo CD, it says, "Mounting /tmp/tmpfs...fatal
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| 51 | error! Failed UPGRADE YOUR RAM". What does that mean?</A><BR>
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| 52 | <DT CLASS="mvd-P">Q: <A HREF="faqbooting.html#AEN624">When I try to
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| 53 | boot from the Mondo CD, it says something about not finding my CD-ROM
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| 54 | drive and then it blames the kernel. What does that mean?</A><BR>
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| 55 | <DT CLASS="mvd-P">Q: <A HREF="faqbooting.html#AEN631">The Mondo
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| 56 | CD/floppy takes ages to boot. How can I speed it up?</A><BR>
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| 57 | <DT CLASS="mvd-P">Q: <A HREF="faqbooting.html#AEN636">I made a Mondo
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| 58 | CD using the failsafe kernel (i.e. I said 'no' when Mondo asked if I
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| 59 | wanted to use my own kernel). It still doesn't boot. Help!</A><BR>
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| 60 | <DT CLASS="mvd-P">Q: <A HREF="faqbooting.html#AEN641">What if my PC
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| 61 | won't boot from a CD?</A><BR>
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| 62 | <DT CLASS="mvd-P">Q: <A HREF="faqbooting.html#AEN647">But why won't
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| 63 | Mondo boot from my CD? It says my kernel is flawed/outdated/
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| 64 | whatever, and when I wrote to you, you told me the same thing... but
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| 65 | I still don't get it. I mean, my kernel works for everything else.
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| 66 | Why not Mondo?</A><BR>
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| 67 | <DT CLASS="mvd-P">Q: <A HREF="faqbooting.html#AEN653">Why do I only
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| 68 | need a boot disk if I'm using a tape drive? Where are the data disks?</A><BR>
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| 69 | <DT CLASS="mvd-P">Q: <A HREF="faqbooting.html#AEN658">Why does it
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| 70 | say, "Process accounting FAILED" when I reboot?</A><BR>
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| 71 | <DT CLASS="mvd-P">Q: <A HREF="faqbooting.html#AEN663">Why does it
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| 72 | say, &#8220;request_module[block-major-1]: Root fs not mounted
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| 73 | VFS: Cannot open root device "100" or 01:00 Please append a
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| 74 | correct "root=" boot option kernel panic: VFS: Unable to
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| 75 | mount root fs on 01:00&#8221; when i boot from the CD?</A><BR>
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| 76 | <DT CLASS="mvd-P">Q: <A HREF="faqbooting.html#COPYBOOTDATADISK">How
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| 77 | do i copy boot+data disk images to physical floppy disks?</A><BR>
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| 78 | <DT CLASS="mvd-P">Q: <A HREF="#TAPENICE">My tape drive doesn't play
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| 79 | nicely with Mondo at boot-time. What do I do?</A></P>
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| 80 | </DL>
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| 81 | <P ALIGN=LEFT>
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| 82 | <A NAME="AEN601"></A><B>Q: </B>How do I know if Mondo works with my
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| 83 | Linux distro?</P>
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| 84 | <P ALIGN=LEFT>
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| 85 | <B>A: </B>Try running it. :) That's always a good way to find out.
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| 86 | Check the <A HREF="../../docs/docs.html" TARGET="_top">Documentation page</A>,
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| 87 | too.</P>
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| 88 | <P ALIGN=LEFT>
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| 89 | <A NAME="AEN607"></A><B>Q: </B>When I try to boot from the Mondo CD,
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| 90 | it says, "VFS: Unable to mount root fs." I am using a
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| 91 | Debian distro. What do I do?</P>
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| 92 | <P ALIGN=LEFT>
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| 93 | <B>A: </B>Ask Debian's designers why they, unlike every other distro
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| 94 | I can find, have included cramfs and other 'goodies' with their
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| 95 | kernel. In the meantime, please use '-k FAILSAFE' in your command
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| 96 | line when calling Mondo.</P>
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| 97 | <P ALIGN=LEFT>
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| 98 | <A NAME="AEN612"></A><B>Q: </B>When I try to boot from the Mondo CD,
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| 99 | it says, "Cannot mount root fs - kernel panic," or
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| 100 | something similar. What do I do?</P>
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| 101 | <P ALIGN=LEFT>
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| 102 | <B>A: </B>Recompile your kernel (or use '-k FAILSAFE'). Take a look
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| 103 | at <A HREF="kernelsupport.html">Linux Kernel support</A> to see what
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| 104 | you're kernel must support.</P>
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| 105 | <P ALIGN=LEFT>
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| 106 | <A NAME="AEN618"></A><B>Q: </B>When I try to boot from the Mondo CD,
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| 107 | it says, "UPGRADE YOUR RAM". What does that mean?</P>
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| 108 | <P ALIGN=LEFT>
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| 109 | <B>A: </B>Recompile your kernel and add Virtual memory file system
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| 110 | support. Take a look at <A HREF="kernelsupport.html">Linux Kernel support</A>
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| 111 | to see what you're kernel must support. (Of course, if your PC has
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| 112 | less than 64MB of RAM, you could always... what's the phrase? I know,
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| 113 | upgrade your RAM!)</P>
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| 114 | <P ALIGN=LEFT>
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| 115 | <A NAME="AEN624"></A><B>Q: </B>When I try to boot from the Mondo CD,
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| 116 | it says something about not finding my CD-ROM drive and then it
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| 117 | blames the kernel. What does that mean?</P>
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| 118 | <P ALIGN=LEFT>
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| 119 | <B>A: </B>Your kernel must support initrd, loopfs, IDE CD-ROM's, and
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| 120 | ramdisks. Take a look at <A HREF="kernelsupport.html">Linux Kernel support</A>
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| 121 | to see what you're kernel must support. If your kernel does not
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| 122 | support these things, Mondo will not boot from your CD. However, when
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| 123 | running Mindi, you may choose to use _its_ kernel instead of your
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| 124 | own. In addition, you may boot from floppy disk images instead the
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| 125 | CD: copy the disk images from the CD /images directory to floppy
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| 126 | disks, using 'dd'. Take a look at <A HREF="faqbooting.html#COPYBOOTDATADISK">Copy
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| 127 | boot data disks</A> on how to make those.</P>
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| 128 | <P ALIGN=LEFT>
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| 129 | <A NAME="AEN631"></A><B>Q: </B>The Mondo CD/floppy takes ages to
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| 130 | boot. How can I speed it up?</P>
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| 131 | <P ALIGN=LEFT>
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| 132 | <B>A: </B>Edit mindi (it's a shell script, btw) and change
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| 133 | LILO_OPTIONS="" to LILO_OPTIONS="-c". This
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| 134 | enables map compaction in lilo and speeds up booting, for more info
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| 135 | see the lilo man page.</P>
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| 136 | <P ALIGN=LEFT>
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| 137 | <A NAME="AEN636"></A><B>Q: </B>I made a Mondo CD using the failsafe
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| 138 | kernel (i.e. I said 'no' when Mondo asked if I wanted to use my own
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| 139 | kernel). It still doesn't boot. Help!</P>
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| 140 | <P ALIGN=LEFT>
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| 141 | <B>A: </B>OK, now <I>that</I> is a bug. :-) I included a kernel with
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| 142 | Mondo (technically, with Mindi, which Mondo uses) to make sure that
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| 143 | users could use Mondo despite flaws in their own kernels. If you are
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| 144 | using Mondo/Mindi's kernel but still cannot boot from your Mondo CD
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| 145 | then please e-mail the list.</P>
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| 146 | <P ALIGN=LEFT>
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| 147 | <A NAME="AEN641"></A><B>Q: </B>What if my PC won't boot from a CD?</P>
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| 148 | <P ALIGN=LEFT>
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| 149 | <B>A: </B>Copy the image files from the CD /images directory, using
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| 150 | the dd command. Take a look at <A HREF="faqbooting.html#COPYBOOTDATADISK">Copy
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| 151 | boot data disks</A> on how to make those. Then boot from the first
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| 152 | floppy; follow it up with the data disks; finally, type 'mount
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| 153 | /mnt/cdrom' and then utilize the restore script as usual, e.g. mondorestore.</P>
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| 154 | <P ALIGN=LEFT>
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| 155 | <A NAME="AEN647"></A><B>Q: </B>But why won't Mondo boot from my CD?
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| 156 | It says my kernel is flawed/outdated/ whatever, and when I wrote to
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| 157 | you, you told me the same thing... but I still don't get it. I mean,
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| 158 | my kernel works for everything else. Why not Mondo?</P>
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| 159 | <P ALIGN=LEFT>
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| 160 | <B>A: </B>Because Mondo makes a boot disk using your kernel. I bet
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| 161 | your other software doesn't do that. Also, not all kernels are
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| 162 | suitable for boot disks. I'm sorry but that's Life. Upgrade your
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| 163 | kernel and/or recompile it. Take a look at <A HREF="kernelsupport.html">Linux
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| 164 | Kernel support</A> to see what you're kernel must support.</P>
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| 165 | <P ALIGN=LEFT>
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| 166 | <A NAME="AEN653"></A><B>Q: </B>Why do I only need a boot disk if I'm
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| 167 | using a tape drive? Where are the data disks?</P>
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| 168 | <P ALIGN=LEFT>
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| 169 | <B>A: </B>On the tape. :-) The first 32MB of the tape will be set
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| 170 | aside for a large tarball containing the data disks, a list of all
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| 171 | files backed up, and other sundries. If Mondo and Mindi do their
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| 172 | respective jobs then you won't need additional floppies, just the
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| 173 | boot floppy and the tape(s).</P>
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| 174 | <P ALIGN=LEFT>
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| 175 | <A NAME="AEN658"></A><B>Q: </B>Why does it say, "Process
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| 176 | accounting FAILED" when I reboot?</P>
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| 177 | <P ALIGN=LEFT>
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| 178 | <B>A: </B>You were using Process Accounting. Red Hat (or whichever
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| 179 | distro you are using) does not provide a startup/shutdown script yet.
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| 180 | So, when you try to backup the process log, it just grows and grows
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| 181 | as Mondo tries to back it up. Mondo doesn't back it up anymore and
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| 182 | that's why. The unfortunate side-effect is... well, what you see on
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| 183 | your screen. Type 'touch /var/log/pacct' and then 'paccton' to fix
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| 184 | the error message.</P>
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| 185 | <P ALIGN=LEFT>
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| 186 | <A NAME="AEN663"></A><B>Q: </B>Why does it say,
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| 187 | &#8220;request_module[block-major-1]: Root fs not mounted VFS:
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| 188 | Cannot open root device "100" or 01:00 Please append a
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| 189 | correct "root=" boot option kernel panic: VFS: Unable to
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| 190 | mount root fs on 01:00&#8221; when i boot from the CD?</P>
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| 191 | <P ALIGN=LEFT>
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| 192 | <B>A: </B>Recompile your kernel and add initrd support. Take a look
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| 193 | at <A HREF="kernelsupport.html">Linux Kernel support</A>to see what
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| 194 | you're kernel must support.</P>
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| 195 | <P ALIGN=LEFT>
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| 196 | <A NAME="COPYBOOTDATADISK"></A><B>Q: </B>How do i copy boot+data disk
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| 197 | images to physical floppy disks ?</P>
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| 198 | <P ALIGN=LEFT>
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| 199 | <B>A: </B>The images are in /root/images/mindi (eve if they are
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| 200 | created by Mondo) and also in the 'images' directory on the first CD
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| 201 | of your backup set, if you have backed up to CD. You can copy the
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| 202 | images to disk as follows:-</P>
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| 203 | <DIV ALIGN=LEFT>
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| 204 | <P ALIGN=LEFT>
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| 205 | <TABLE WIDTH="100%" CELLPADDING="1" CELLSPACING="2" BORDER="0">
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| 206 | <TR>
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| 207 | <TD BGCOLOR="#E0E0E0" VALIGN=CENTER><PRE
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| 208 | CLASS="PROGRAMLISTING"><FONT
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| 209 | COLOR="BLACK">[boot disk]</FONT><BR><FONT
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| 210 | COLOR="BLACK">bash# fdformat /dev/fd0u1722</FONT><BR><FONT
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| 211 | COLOR="BLACK">bash# dd if=/root/images/mindi/mindi-boot.1722.img of=/dev/fd0u1772</FONT><BR><BR><FONT
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| 212 | COLOR="BLACK">[data disk]</FONT><BR><FONT
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| 213 | COLOR="BLACK">bash# fdformat /dev/fd0</FONT><BR><FONT
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| 214 | COLOR="BLACK">bash# dd if=/root/images/mindi/mindi-data-N.img of=/dev/fd0</FONT><BR><BR><FONT
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| 215 | COLOR="BLACK">Replace N with 1, 2, etc. </FONT></TD></TR>
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| 216 | </TABLE></P>
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| 217 | </DIV>
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| 218 | <DL>
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| 219 | <P ALIGN=LEFT>
|
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| 220 | <DT CLASS="mvd-P"><A NAME="TAPENICE"></A><B>Q:</B> My tape drive
|
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| 221 | doesn't play nicely with Mondo at boot-time. What do I do?</P>
|
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| 222 | <P ALIGN=LEFT>
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| 223 | <DT CLASS="mvd-P"><B>A:</B> Play with 'mt'. Use its setblksize and
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| 224 | defblksize switches to reconfigure your tape drive if necessary. Some
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| 225 | tape drives just suck, I'm sorry to say. If yours is one of them then
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| 226 | God help you. Mondo can handle any tape drive whose drive and
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| 227 | firmware can handle fread(), fwrite(), fread() and fclose(). Mondo
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| 228 | uses standard C libraries to talk to your tape streamer. If your tape
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| 229 | streamer can't handle that then you had better call a priest. Either
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| 230 | that or ask for a refund.</P>
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| 231 | </DL>
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| 232 | <DIV ALIGN=LEFT>
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| 241 | <P ALIGN=CENTER>
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| 242 | <A HREF="index.html" ACCESSKEY="H">Home</A></TD>
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| 244 | <P ALIGN=RIGHT>
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| 245 | <A HREF="faqinstallation.html" ACCESSKEY="N">Next</A></TD>
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| 249 | <P ALIGN=LEFT>
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| 250 | General</TD>
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| 252 | <P ALIGN=CENTER>
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| 253 | <A HREF="faq.html" ACCESSKEY="U">Up</A></TD>
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| 256 | Installation</TD>
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