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Old 07-19-2006, 11:36 AM   #1
trustnnone007
LQ Newbie
 
Registered: Dec 2005
Posts: 10

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How to uninstall CentOS no floopy disk available


Hi guys,
I was messing with asterisk and have a comp that has centOS installed on it.
Now the owner is claiming it back and i have to install winXP on it.
<p>
Just when i insert the windows XP CD rom it says.
Boot from CD.......
and then
Checking for hardware and then hangs.

I dont know how to get to the next menu.
I tried inserting the CENTOS cd back and see if theres any help there but none.

Any guidance will be highly appreciated.
 
Old 07-19-2006, 12:54 PM   #2
lordberic
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Registered: May 2006
Distribution: OpenBSD, Slackware, Darwin
Posts: 2

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ooohhhh sounds like your xp cd might have climbed up the curtain to join the choir invisible mate,

have you got the discs which came with the computer?

if you are sure that the xp cd works, try downloading something like damnsmalllinux and use cfdisk to format the harddrive first
 
Old 07-22-2006, 06:42 AM   #3
trustnnone007
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Registered: Dec 2005
Posts: 10

Original Poster
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damn small linux

I have sucessfully installed damn small linux and on the BASH command prompt typed.
<p>
fdisk -l
<p>
to see the partition
it gives me an error
cannot open /dev/hda

(ah i wasnt root i can now see the partitions.)

Last edited by trustnnone007; 07-22-2006 at 07:04 AM.
 
Old 07-22-2006, 07:12 AM   #4
trustnnone007
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Registered: Dec 2005
Posts: 10

Original Poster
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I can now see the partitions list
it is as follows.
disk dev/hda:20.4gb ,2049107584 bytes
255 heads. 63 sector/tracks, 2491 clyinders
units = clyinders of 16065 * 512 = 8225290 bytes

Device boot start end blocks id system
/dev/hda1 * 1 13 104391 83 linux
/dev/hda2 14 2394 19125382+ 83 linux
/dev/hda3 2395 2491 799152+ 82 linux swap

So this confirms that i somehow have 3 partitions.
 
Old 07-22-2006, 08:29 AM   #5
trustnnone007
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Registered: Dec 2005
Posts: 10

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NTFS file system created.

Using CFDISK i have sucessfully created a single NTFS file system allocating it full memory.
Is that the right partition for windows XP.
 
Old 07-22-2006, 08:30 AM   #6
Nylex
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Registered: Jul 2003
Location: London, UK
Distribution: Slackware
Posts: 7,464

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Yes, but you can also install XP on a FAT32 partition if you want.
 
Old 07-02-2009, 06:13 AM   #7
MisterMinister
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Registered: Jul 2009
Posts: 3

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Whoaaa....
OLD THREAD...

But i have the Same Problem,and want to ask,if i have to install damnsmalllinux on my HDD to get the HDD clean ??
or can i start cfdisk from CD ???
 
Old 07-02-2009, 07:45 AM   #8
thorkelljarl
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Registered: Jun 2008
Posts: 1,804

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Almost any live-cd...

You can use a copy of PartedMagic or GPartedLiveCD to erase any partitions, to format, or examine and check both vfat and NTFS file systems used by XP. You can partition part or all of a HDD before starting to install XP with more information and control than the XP GUI presents as it examines a HDD and proposes where XP should or could install.

Thereby you leave XP only the task of seeing a valid Windows partition, and waiting for a key stroke to be installed right there, without the risk of Windows not seeing or respecting the boundaries of a linux partition.

Any linux live-cd should allow you to attain root privileges and use its partitioning tools to do the same thing, but PartedMagic is a good and handy special tool to have on hand.

Last edited by thorkelljarl; 07-02-2009 at 07:48 AM.
 
Old 07-02-2009, 08:04 AM   #9
MisterMinister
LQ Newbie
 
Registered: Jul 2009
Posts: 3

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well...
Everytime i type in cfdisk i get an error

Quote:
FATAL ERROR: Cannot read Disk drive
Maybe some one can post a guide,wich can help me to get that CentOS from my HDD ??

Thanks for any help...
 
Old 07-02-2009, 10:34 AM   #10
thorkelljarl
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Registered: Jun 2008
Posts: 1,804

Rep: Reputation: 215Reputation: 215Reputation: 215
You might...

You might try another live-cd to see if the problem is in recognizing the HDD or with the particular edition of the tool you are using. You tried <cfdisk> as root using a CentOS CD? Is it a live CD?

You can not use any command or tool to change a partition while it is mounted. That is here use <cfdisk> if you are running the command from within linux on that same running system's partition; therefore the mention of the live-cds.

You don't give a very full description of what you have done, with what and how, and risk being informed of something of which you are already very well aware.

http://www.linuxquestions.org/linux/...Ask_a_Question
.

Last edited by thorkelljarl; 07-02-2009 at 10:37 AM.
 
Old 07-02-2009, 12:57 PM   #11
MisterMinister
LQ Newbie
 
Registered: Jul 2009
Posts: 3

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Hi there...

As i said in my posts before...

I want to deinstall Centos from my HDD...
when i reboot my PC with Windows cd in CD-Rom,i cant install windows(i tried 4 versions of Windows XP),or delete any partitions...after message "To boot from CD, press any Key" The whole PC seems to stuck at this Point...it dont go forward....


Then i Downloaded DamnSmallLinux Latest Version...
I reboot my PC with DSL-CD in the CD-Rom...
and when i try command cfdisk from the DSL-CD i get the Error what i told in the post before...


but when i type in " dd if=/dev/null of=/dev/hda bs=4M "
the CPU goes up to 100%..but nothing happens...



Maybe i should Try to Overwrite CentOS with Suse-Linux ??

Or do you have another hint for me ??

Thx



EDIT: All done Well...I installed Suse-Linux on the HDD...After it was installed,i could use the Windows-CD...
Cya later then...

Last edited by MisterMinister; 07-02-2009 at 03:27 PM.
 
  


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