-
v6.2.1 CD boot error: Input/output error
Successfully:
Verified CD with boot option 'knoppix testcd'
Past mounting /mnt-system
Past mounting /KNOPPIX
Past mounting /UNIONFS
Past symlinks to /UNIONFS
Following error found:
/init: exec: line 742: /sbin/init: input/output error
The following cheat codes were used with no success.
knoppix vga=0
knoppix (1-5)
knoppix acpi=off noapic nolapic pci=bios hpet=off nodma
knoppix acpi=off pnpbios=off noapic noapm
knoppix vga=0 debug -b 3
Using 'debug' boot option and typing 'exit' at each prompt, the system stalls at the following prompt:
BusyBox v1.14.2 (Debian 1:1.14.2-2) built-in shell (ash)
Enter 'help' for a list of built-in commands.
sh: can't access tty; job control turned off
/ #
At this point, I typed 'exit' and then 'init 5' but still have a blank screen.
-
Senior Member
registered user
The input/output error thingie with /sbin/init, seems to be a fairly common problem, not limited to knoppix only. The errors seem to be due to /sbin/init failed to open /dev/console for input/output, but nobody seems to have found out why it happens only to certain systems :-
http://www.linuxquestions.org/questi...-error-397113/
Perhaps you can try to debug it by checking the permission of /dev/console and also do some chmod, when you run it under debug mode.
Cheers.
-
Solution found
Thanks 'kl522' for your suggestion, however, it seems that 'input/output' error could be due to many possible causes. To change the permissions on a clean downloaded distribution doesn't make sense.
In my case the problem was with my CD which explains why a file could not be read i.e. input error.
My solution was simple:
- used a new, clean, high-quality 700MB CDR
- burned at slowest speed 4x
- OPTIONAL: increased the cache and RAM buffer size
As per the forums, most errors are due to:
1. Incomplete/bad download
2. Bad burn
-
Administrator
Site Admin-
![Quote](images/misc/quote_icon.png)
Originally Posted by
peter.hentrich
As per the forums, most errors are due to:
1. Incomplete/bad download
2. Bad burn
yup, and both easily preventable:
1) Use the torrents rather than the mirrors, and do the simple md5 test. If you don't want to learn how to do either because you have never done them before, then it is very likely that Knoppix and Linux are not for you and you should stay with Windows.
2) Burning at slow speed, as an ISO, with burning software that supports both ISO burning and verification after burning (such as Nero) with verification enabled should give a good burn.
---
Verifying of md5 checksum and burning a CD at slow speed are important.
-
Downloads and burning
Harry, thanks for your experienced advice and patience with first-timers like me.
These are simple measures to ensure successful CD/DVDs:
1a) Use the torrents rather than the mirrors
Yes, this is the best option. Using a torrent does not eliminate errors though, as I discovered. Whether by user error or otherwise, my 'uTorrent' download was incomplete even when it said "finished". I had to re-check/re-start my download.
1b) Do the simple md5 test
Yes, this step should be mandatory after a finished download. Foolishly, I ignored this hash key verification and trusted my torrent application to verify the complete download.
For an explanation of the procedure, go to:
http://www.knoppix.net/wiki/Downloading_FAQ#Q:_What_are_these_strange_MD5_file s_that_accompany_the_ISO_CD_images.3F
It's a single command:
Code:
md5sum -c KNOPPIX_xxxxxxxx.iso.md5
Here is the erraneous output after my first attempt of the uTorrent download:
Code:
md5sum -c KNOPPIX_V6.2.1CD-2010-01-31-EN.iso
md5sum: @@@@@@@@@@@@@@@@@@@@@@@@@@ : No such file or directory
@@@@@@@@@@@@@@@@@@@@@@@@@@ : FAILED open or read
md5sum: int1e = %08x: No such file or directory
int1e = %08x: FAILED open or read
md5sum: WARNING: 2 of 2 listed files could not be read
Here is the successful output after I 're-checked' and 're-started' my uTorrent download:
Code:
md5sum -c KNOPPIX_V6.2.1CD-2010-01-31-EN.iso.md5
KNOPPIX_V6.2.1CD-2010-01-31-EN.iso: OK
Knoppix is working and an important lesson learned.
Tags for this Thread
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
![Lenovo ThinkPad Laptop PC Computer 15.6](/store/img/g/DLkAAOSwMapmfYli/s-l225/Lenovo-ThinkPad-Laptop-PC-Computer-15-6-Core-i5-8G.jpg)
Lenovo ThinkPad Laptop PC Computer 15.6" Core i5 8GB RAM 256GB SSD Windows 11
$198.50
![15.6](/store/img/g/Hb4AAOSwWahmfbAj/s-l225/15-6-Lenovo-ThinkPad-Laptop-PC-Intel-i5-16GB-RAM-5.jpg)
15.6" Lenovo ThinkPad Laptop PC: Intel i5 16GB RAM 512 SSD Windows 11 Webcam
$227.99
![Lenovo ThinkPad Laptop PC 15](/store/img/g/ZC4AAOSw7mJmhN6w/s-l225/Lenovo-ThinkPad-Laptop-PC-15-FHD-Core-i5-16GB-RAM-.jpg)
Lenovo ThinkPad Laptop PC 15" FHD Core i5 16GB RAM 256GB SSD Windows 10 Pro HDMI
$239.99
![Lenovo Ideapad 1 14](/store/img/g/l2oAAOSw3UplMDZC/s-l225/Lenovo-Ideapad-1-14-Laptop-Celeron-N4020-with-4GB-.jpg)
Lenovo Ideapad 1 14" Laptop - Celeron N4020 with 4GB Memory - Intel UHD Graph...
$149.99
![Lenovo ThinkPad 15.6](/store/img/g/tPUAAOSwYr5mg4nj/s-l225/Lenovo-ThinkPad-15-6-Core-i5-Laptop-PC-Computer-Wi.jpg)
Lenovo ThinkPad 15.6" Core i5 Laptop PC Computer Windows 10 16GB RAM 256GB SSD
$204.42
![Lenovo ThinkPad T540P 15.6](/store/img/g/OVgAAOSwMgBmfcp-/s-l225/Lenovo-ThinkPad-T540P-15-6-FHD-Laptop-PC-Intel-i5-.jpg)
Lenovo ThinkPad T540P 15.6" FHD Laptop PC Intel i5 8GB Ram 256GB SSD Fingerprint
$118.00
![Lenovo Thinkpad X390 Yoga 13.3](/store/img/g/INoAAOSw6G9mhE7R/s-l225/Lenovo-Thinkpad-X390-Yoga-13-3-2in1-TOUCH-i5-8365U.jpg)
Lenovo Thinkpad X390 Yoga 13.3" 2in1 TOUCH i5-8365U 256GB SSD 8GB Win 10 Laptop
$199.99
![LENOVO 100e CHROMEBOOK 2nd GEN MTK MT8173C 1.7GHz 4GB RAM 32GB SSD WiFi CHARGER picture](/store/img/g/FAcAAOSwMmtl~NhO/s-l225/LENOVO-100e-CHROMEBOOK-2nd-GEN-MTK-MT8173C-1-7GHz-.jpg)
LENOVO 100e CHROMEBOOK 2nd GEN MTK MT8173C 1.7GHz 4GB RAM 32GB SSD WiFi CHARGER
$39.90
![~OVERSTOCK~ 15.6 Lenovo ThinkPad Laptop: Intel i5 16GB RAM 1TB SSD Windows 10 picture](/store/img/g/zQoAAOSwZ71mfc0x/s-l225/-OVERSTOCK-15-6-Lenovo-ThinkPad-Laptop-Intel-i5-16.jpg)
~OVERSTOCK~ 15.6 Lenovo ThinkPad Laptop: Intel i5 16GB RAM 1TB SSD Windows 10
$309.95
![Lenovo ThinkBook 14 Gen 6 AMD Laptop, 14](/store/img/g/wU4AAOSwmdZmQCJk/s-l225/Lenovo-ThinkBook-14-Gen-6-AMD-Laptop-14-IPS-60Hz-R.jpg)
Lenovo ThinkBook 14 Gen 6 AMD Laptop, 14" IPS 60Hz, Ryzen 5 7530U, 8GB, 256GB
$569.94