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Old 07-02-2010, 07:04 PM   #1
Ojustaboo
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Alternate 10.04 64bit install hangs at 75% and asks for CD


Hi folks, I'm being driven nuts by this (not giving up though).

Had problems with hard drives yesterday, wouldn't recognise them after I'd installed Linux. Today I fixed that problem (another thread on here, in the hardware section) but now, every single time the install gets to 75%, it asks me to insert the CDROM and basically hangs.

Hitting enter doesn't try to fire up the CDROM, there's zero noise from it.

It did this once yesterday but all other tries worked fine.

Today it's failed the 7 different times I've tried, in exactly the same place, each time asking for the CD, even tried re-burning the CD, still failing at the same place.

It's just after doing something to APT, then storing something (not very helpful I know).

Can get a command prompt by CTRL-ALT_F2, but have no clue as to how to proceed when I get there.

Any and all suggestions welcome

Thanks
 
Old 07-02-2010, 07:22 PM   #2
10110111
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Do you have /dev/sr0? Can you mount it when you have inserted the CD? Does the installer tell you why you have to insert the CD?
 
Old 07-03-2010, 03:12 AM   #3
Ojustaboo
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The last thing the installer does correctly is "Storing Language" at 74%

It then goes onto whatevers next, but at the same time throws a window up blocking this, which says the following

Quote:
Please insert the disc labeled 'Ubuntu 10.04 LTS_Lucid Lynx_ -
Release amd64 (201000427.1)' in the drive '/cdrom/' and press enter
AT this point, if I press CTRL-ALT-F2 to get command prompt, typing 'df' shows /dev/sr0 mounted as /cdrom.

If I cd into /cdrom, I can browse around the cd fine.

If I read the file README.diskdefines on the cd, the first line reads,

Quote:
#define DISKNAME Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64
 
Old 07-03-2010, 09:14 AM   #4
Ojustaboo
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Further investigation, the last thing it was trying to do was

Quote:
The following NEW packages will be installed
installation_report libpci3 pcutils
The last two lines in dmesg are

Quote:
I/O error, dev sr0, sector 396
ISOFS: unable to read i-node block
I've burnt 3 different CD's so far, all from the same ISO, will download another iso from and see how I get in with that.
 
Old 07-03-2010, 11:04 AM   #5
Ojustaboo
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Quote:
Originally Posted by Ojustaboo View Post
I've burnt 3 different CD's so far, all from the same ISO, will download another iso from and see how I get in with that.
Failed at exactly the same place.
 
Old 07-03-2010, 02:13 PM   #6
Ojustaboo
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Did a netinstall, should have tried this days ago worked 100% fine first time.
 
Old 07-04-2010, 09:16 AM   #7
10110111
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This all seems to be a CD drive problem. Your drive is likely to be faulty.
 
Old 07-04-2010, 11:57 AM   #8
Ojustaboo
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What seems odd though is the drive works 100% fine in all other situations, and fails in exactly the same place on this install, on several different CD's burnt from two different software sources.

Just gave it another try, watching the ALT-F4 screen after I partitioned, and it seems to do something that screws up it's connection with the CD Drive.

Everything's fine until the following, then the CD doesn't work at all.

Quote:
base_installer: Using CD_ROM mount point /cdrom/
base-installer: Identifying

kernel: [523 800513] sr 8:0:0:0 [sr0] unhandled sense code
kernel: [523 800515] sr 8:0:0:0 Result: hostfile=DID_OK driverbyte-DRIVER_SENSE]
and various other cd errors after that point until the point it asks to insert the CD and press enter to continue.

It seems like it's configuring something that then screws up all access to the CD because even if I remove and re-insert the CD, and hit enter, it doesn't spin up etc.

Will live with it for now (although I don't like things to beat me) as can do a netinstall.

These drives cost less than 20 nowdays so could always get another one if I have any other problems, but am reluctant to when everything else works fine.


Many thanks
 
Old 07-04-2010, 12:57 PM   #9
PTrenholme
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Just a thought: The "mount point" that's being accessed is probably in a RAM file system, and it's possible that you've run out of dynamic memory. I.e., perhaps you need to add more RAM rather than a new CD. (Most 64-bit systems come with three or four GB of RAM, so my suggestion may be "off the mark," but you might want to run the memchk program to verify that your RAM is all working.)
 
Old 07-04-2010, 01:19 PM   #10
Ojustaboo
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Will try the memchk, it's an i7 computer with 6GB RAM so I doubt it's a lack that's causing the problem.
 
Old 08-02-2010, 07:10 PM   #11
clioumis
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Smile alternate ubuntu 10.04 CD i386 and Vbox

Dear Linux users,
I have the same problem in the same point using the alternate CD 10.04- i386 in order to setup a virtual machine on Vbox with virtual HDD's using S/W Raid1.
Replacing CD/DVD's nothing changed.The problem bypassed using instead of real CD's the .iso equivalent as the source of the installation.
The installation completed successfully and the virtual machine works as expected.
Next trial will be on the real machine with "real" HDD's in Raid1 using alternate ubuntu10.04 CD.

my H/W is:motherboard A8N-SLI, cpu: AMD Athlon 64x2 Dual Core 2,2 Ghz, RAM:4Gbyte graphics card: nvidia GeForce 6600GT

clioumis
 
  


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