Differences between version 12 and predecessor to the previous major change of UserModeLinux.
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| Newer page: | version 12 | Last edited on Friday, January 9, 2004 10:17:20 pm | by DavePearson | Revert |
| Older page: | version 8 | Last edited on Wednesday, November 5, 2003 10:02:10 am | by GreigMcGill | Revert |
@@ -10,9 +10,9 @@
dd if=/dev/zero of=root_fs bs=1M count=512
and formatted it with ext2
mke2fs ./root_fs
then mounted it as a loop back device
- mkdir x
&& mount -o loop ./root_fs uml
+ mkdir uml
&& mount -o loop ./root_fs uml
then built my disto on it
debootstrap woody uml /mirrors/debian
you can then boot uml
linux single rw devfs=mount eth0=tuntap,,,''the-ip-of-your-host-machine''
@@ -26,10 +26,10 @@
Now lets configure all the packages
dpkg-reconfigure -a
tzconfig
now before we reboot we need to create some files that the installer usually creates
- echo /dev/ubd/0 / ext2 defaults,errors=remount-ro 0
1 >/etc/fstab
- echo none /proc proc defautls
0 0 >>/etc/fstab
+ echo /dev/ubd/0 / ext2 defaults,errors=remount-ro 0 1 >/etc/fstab
+ echo none
/proc
proc defaults
0 0 >>/etc/fstab
echo ''hostname-of-your-uml-machine'' >/etc/hostname
and lets set up networking on boot
@@ -78,4 +78,35 @@
tuntap_open_tramp failed - errno = 22%%%
SIOCSIFFLAGS: Invalid argument%%%
I tried EVERYTHING to get rid of this. Finally the solution was VERY simple. Run as a standard user, who is in the uml-net group, and not as root. Note: This is a "works for me". I still don't know why this solved the problem, only that it did. Also, another oddity is that AFTER I had run it as a user, I could then run it as root with no problems. This smacks of tap0 being created with incorrect permissions or some oddity. Anyway, it works now.
+
+!Mounting one of the pre-built Root FSes (ON THE HOST!)
+
+It took a while for me to work out how to mount a root FS for RH9 so I could change it before booting UML. The FS had two partitions and a partition table, so mount the_fs /mnt -o loop didn't work. It turns out you need to specify an offset to mount to skip past the partition table. You can find out how many bytes to skip by doing this:
+
+ # fdisk redhat9.image.server-minimal.disk
+ Command (m for help): u
+ Changing display/entry units to sectors
+
+ Command (m for help): p
+
+ Disk redhat9.image.server-minimal.disk: 0 MB, 0 bytes
+ 128 heads, 32 sectors/track, 0 cylinders, total 0 sectors
+ Units = sectors of 1 * 512 = 512 bytes
+
+ Device Boot Start End Blocks Id System
+ redhat9.image.server-minimal.disk1 * 32 3756031 1878000 83 Linux
+ redhat9.image.server-minimal.disk2 3756032 4194303 219136 82 Linux swap
+
+ Command (m for help): q
+
+ # bc
+ bc 1.06
+ Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.
+ This is free software with ABSOLUTELY NO WARRANTY.
+ For details type `warranty'.
+ 32*512
+ 16384
+ # mount redhat9.image.server-minimal.disk /mnt -o loop,offset=16384 -t ext3
+
+Sorted.
