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Re: initramfs prompt



On Fri, Nov 07, 2014 at 12:29:31PM +0100, Achim Spreen wrote:
> Hello.
> 
> I have a laptop without cdrom or floppy and it isn't
> usb-bootable. After an unsuccessfull installation mininal of debian
> wheezy 7.6 i got only a initramfs prompt, busybox and little programs
> in /sbin and /bin. I can't write on the disk, all changes get lost after
> reboot. Can i and when how write to the disk ?
> 
> Here some output:
> 
> #Grub menu:
> 
> GNU GRUB
> ...
> search --fs-uuid
> echo
> ...
> linux /boot/vmlinuz-3.2.0-4-686-pae ro
> ...
> 
> #boot:
> 
> ...
> [  0.927417] Simple Boot Flag at 0x6e set to 0x1
> ...
> [  0.965249] ERST: Table is not found !
> [  0.965312] GHES: HEST is not enabled !
> ...
> [  2.129223] sd 0:0:0:0: [sda] Write Protect is off
> [  2.129471] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled,
> doesn't support DPO or FUA
> ...
> [  2.484098] sda: sda1 < sda5 sda6 sda7 sda8 sda9 sda10 sda11 > sda2
> ...
> Begin: Loading essential drivers ... done
> Begin: Running /scripts/init-premount ... done
> ...
> modprobe: module unknown not found in modules.dep
> mount: can't read '/etc/fstab': No such a file or directory
> Begin: Running /scripts/local-bottom ... done
> done
> Begin: Running /scripts/init-bottom ... mount: mounting /dev on /root/dev
> failed: No such a file or directory
> done
> Target filesystem doesn't have requested /sbin/init.
> No init found. Try passing init= bootarg.
> [  4.899187] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> ...
> 
> 
> BusyBox v1.20.2
> (Debian 1:1.20.0-7) built-in shell (ash)
> Enter 'help' ...
> 
> /bin/sh:
> can't access tty: job control turned off
> (initramfs) _

OK, so initramfs hasn't been able to find your root filesystem. I
thought that generally resulted in the kernel panicking, but apparently
not.

I notice that you haven't told the kernel where your root filesystem is,
though, so either autodetection hasn't worked or there is no
autodetection. I would suggest adding "root=<device>" to the end of the
"linux /boot/vmlinuz-3.2.0-4-686-pae ro" line, where "<device>" is any
valid way of telling linux where the device is (so you could say
/dev/sda1, LABEL=rootfs, UUID=1234-567... etc etc). If that works and
you get into your system, re-run "sudo update-grub" to fix the grub
configuration.


> 
> Bye
> 
> 
> -- 
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