LBAcache / STAK nest error

Try looking for help here if you are having problems with the latest beta of Ultimate Boot CD.

Moderators: Icecube, StopSpazzing

Post Reply
Message
Author
ubcdhelpplease
Posts: 12
Joined: Wed Sep 30, 2009 4:28 pm

LBAcache / STAK nest error

#1 Post by ubcdhelpplease » Wed Sep 22, 2010 1:06 am

I'm having a problem with UBCD running off an USB stick. It works fine on all the Desktops around, but on both the IBM/Lenovo T61 and X61 series the freedos disk fails in an interesting way. It displays funny messages like
"LBACACHE: in. STAK nest!? otherss=00d3"
whenever it tries to access C: (i.e. the USB drive).

As far as I can tell, this is a problem with LBACACHE, because if I use the "Clean Boot" entry I can access the USB stick (as C:) just fine.

Unfortunately even the "Ultra-Defensive" boot option doesn't have an option to skip LBACACHE, so I'm a bit lost on how to fix/workaround this problem.

Can anyone help?

ubcdhelpplease
Posts: 12
Joined: Wed Sep 30, 2009 4:28 pm

Re: LBAcache / STAK nest error

#2 Post by ubcdhelpplease » Mon Sep 27, 2010 6:36 am

OK. I managed to work around this problem.

Fixed ubcd/images/fdubcd.img.gz by
- gunzip the file
- loopback mount the floppy on linux
- delete BIN/lbacache.cab
- unmount
- re-gzip
- replace fsubcd.img.gz with the new version

The such patched ubcd now works fine on the formerly problematic laptops.

Having an option to disable lbacache in the next version would be a great idea.

Victor Chew
Posts: 1361
Joined: Mon Feb 21, 2005 10:59 pm
Contact:

Re: LBAcache / STAK nest error

#3 Post by Victor Chew » Thu Sep 30, 2010 9:54 pm

I can't find a way to make lbacache selectable on bootup like cdrom or lfn, but I can make the ultra-defensive option launch without lbacache.

The problem is lbacache is located in bin, for which menus are not supported.

Icecube
Posts: 1278
Joined: Fri Jan 11, 2008 2:52 pm
Contact:

Re: LBAcache / STAK nest error

#4 Post by Icecube » Thu Sep 30, 2010 11:22 pm

Is there a way to use detect a nolbacache parameter specified on the MEMDISK command line, whit mdiskchk.com, at that stage?
Download Ultimate Boot CD v5.0: http://www.ultimatebootcd.com/download.html
Use Parted Magic for handling all partitioning task: http://partedmagic.com/

Victor Chew
Posts: 1361
Joined: Mon Feb 21, 2005 10:59 pm
Contact:

Re: LBAcache / STAK nest error

#5 Post by Victor Chew » Mon Oct 18, 2010 5:12 pm

Conceivably, since menu interaction is not involved, and mdiskchk.com is already available at that stage.

So what do you have in mind? For users to update the menus and add "nolbacache" to every "memdisk fdubcd" line? Might be more convenient to introduce a single flag in "/etc/global.set" on fdubcd.img instead.

Icecube
Posts: 1278
Joined: Fri Jan 11, 2008 2:52 pm
Contact:

Re: LBAcache / STAK nest error

#6 Post by Icecube » Mon Oct 18, 2010 11:52 pm

Because it only fails on a very few models, I think a "nolbacache" MEMDISK parameter would be better. Or, if possible, let the "nolbacache" MEMDISK parameter, change the "/etc/global.set" file, from:

Code: Select all

nolbacache=0
to:

Code: Select all

nolbacache=1
So you can provide the "nolbacache" MEMDISK parameter or you can change the "/etc/global.set" file.
Download Ultimate Boot CD v5.0: http://www.ultimatebootcd.com/download.html
Use Parted Magic for handling all partitioning task: http://partedmagic.com/

Victor Chew
Posts: 1361
Joined: Mon Feb 21, 2005 10:59 pm
Contact:

Re: LBAcache / STAK nest error

#7 Post by Victor Chew » Thu Oct 28, 2010 8:31 pm

@Icecube: The proper place to add the default "0" value for "nolbacache" is config.sys (global.set is more for default menu settings), which I have done. Specifying "nolbacache" in memdisk sets it to 1, which disables loading of LBACACHE.

Feel free to try the new fdubcd.img here or here.

lustylook
Posts: 3
Joined: Sun Nov 07, 2010 5:06 am

Re: LBAcache / STAK nest error

#8 Post by lustylook » Sun Nov 07, 2010 5:40 am

Hello, I get the same error... could you fix the link? Thanks!
Victor Chew wrote:Feel free to try the new fdubcd.img

Victor Chew
Posts: 1361
Joined: Mon Feb 21, 2005 10:59 pm
Contact:

Re: LBAcache / STAK nest error

#9 Post by Victor Chew » Mon Nov 08, 2010 9:46 pm

Added link to a local copy. Please try again.

Post Reply