Question about IBM ThinkPad 600E 2645 Notebook

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How to get into the Dos prompt at reboot for the IBM ThinkPad 2645?

I want to format the hard-drive for this IBM ThinkPad 2645, but I can't seem to get a dos prompt when I reboot. I don't see a selection there that says "DOS Prompt" by itself. I do see "SafeMode with Dos Prompt", but that just scrolls up text, and doesn't allow me to do anything. Is there some other way to get to the Dos Prompt so that I can type in the command to format the hard-drive?


Vince J.

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  • IceCake
    IceCake Dec 22, 2007

    Thanks for the quick reply Adee. :)

    I have Xp Pro Installed on this laptop. I have a windows cd as well, but when I insert it and reboot, the computer restarts itself before it even gets to the point where I can select to do a clean install. It does read from the cd and acts as if it's about to about to go through with the install process, however, at some point it just reboots. So, I was trying to get into the dos prompt so that I could wipe the hard-drive manually. I think it's because there isn't enough hard-drive space available to reinstall XP. There just little over 1gb of space there.

    Some files and programs are there which I can't delete or uninstall for some reason, so I need to go the dos route to clear everything out and start fresh.

    Do you have a direct link for the actual bootdisk from that website? There's a lot of stuff listed there, just want to be sure I download the correct program to get me into dos.

    Thanks for you help. :)

  • IceCake
    IceCake Dec 22, 2007

    Adee, changing the boot sequence in the bios to have the cdrom as the first device, did not work, it still does the same thing, reboots a little while into the install process.

    That other link you provided requires 6 six floppies to get into the dos prompt, I don't have a floppy on my computer, nor is there one on this ThinkPad, at least as far as I can tell.


    Using the dos prompt from within XP via the run option doesn't work either, I've tried that several times.

    I'm gonna take a break now, I've been at this all day. Any other suggestions, feel free to post them, I appreciate the help tremendously. :)

    I'll keep you all updated on what ever progress is being made.

    Vince J.

  • alihasnain81 Feb 23, 2009

    I want to install the windows on IBM ThinkPad 2645, but I can't seem to get a dos prompt when I reboot. I don't see a selection there that says "DOS Prompt" by itself. I do see "SafeMode with Dos Prompt", but that just scrolls up text, and doesn't allow me to do anything. Is there some other way to get to the Dos Prompt so i install the window. Before currapted the window it was window xp. my laptop not boot from CD and i don't know either the problem of boot option or bootable CD.

  • courser9 May 16, 2009

    I need to get to dos on my IBM to reformat all I can find is BOIS



2 Answers

You can get dos prompt even on windows XP. just click start-Run.enter cmd.exe. you will get to see command prompt is that you want.. Enjoy !

Posted on Dec 22, 2007

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First of all, What operating system do you have on this machine?
If it's Win98, you can get DOS.
If it's WinXP, you will have to make a bootable CD to get into the DOS prompt.
Check out this link :

You can also get into the setup from CD, by changing the boot sequence from BIOS. (If the installation CD that you have is a bootable CD)

Hope this helps.

Thanks & Good luck!

Posted on Dec 22, 2007

  • Aditi Jain Dec 22, 2007

    Alright, Here's the link for Windows XP Pro Boot disk :

    But, I think it's better if you change the boot sequence by going into BIOS. And then restart the machine with CD. you can then enter setup and install windows on it.

    You can get into IBM BIOS by pressing F1 key when your turn the machine on.

    Make CD Drive to boot first and then insert CD, restart machine.

    Try it and let me know.

    Hope this helps!



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Do a search for memtest86.iso. Burn this image to a cd and reboot your computer. When your computer reboots it should begin checking your memory for errors. If you still have problems it might be your hard drive.

Feb 13, 2009 | IBM ThinkPad 600E 2645 Notebook

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if you got a windows xp cd then boot from it and format the drive then reinstall xp

Dec 09, 2008 | IBM ThinkPad 600E 2645 Notebook

1 Answer

How to clean up hard drive on ibm thinkpad 2645 600e model

i) when you open My Computer you will see partitions or your hard disk partitions(such as C, D, E , F)
   right click on D and you will come with some option, click on format option and all the data on your drive will lost or cleaned up completely,,

continue this process withother other drivers, other than C Drive since it has system files and u cant delete it ......

ii) if you even want this delete try to follow the procedure of loading or formating xp or freshly load xp on computer and follow onscreen instruction you will see the C Drive and now press the D to Delete that drive and follow some instructions...and totally drive is completely cleared

Thanking you

M. Sridhar

Dec 09, 2008 | IBM ThinkPad 600E 2645 Notebook

1 Answer


That unit it about 10 years old.
Unfortunately, you cannot upgrade the CPU (processor)

The RAM is a standard 100MHz non-parity SDRAM SODIMM. The 2645 can use 128MB DIMMS for 160MB maximum. It has 32MB internal and two slots.

The hard drive size is limited by the BIOS. Any standard 2.5" hard drive should work, but may show as limited size, maybe 20GB.

Get a PCMCIA modem.

If you found a docking station for this unit, you'd be in better shape. Like I said, it's 10 years old. It won't be easy.

Jul 22, 2008 | IBM ThinkPad 600E 2645 Notebook

3 Answers

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Error 19990301 on a Thinkpad 600 usually indicates that the hard drive is not properly connected, and error code 19990305 signifies "no bootable device". So, it's the hard drive.

First of all, I would try removing and replacing the drive to see if that cures it. You can get the service manual from Lenovo at

If this doesn't fix it, the hard drive is faulty. However, small size hard drives (10 or 20Gb) which suit these older machines are very cheap on eBay.

Dec 18, 2007 | IBM ThinkPad 600E 2645 Notebook

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ibm thinkpad does not boot My IBM Thinkpad 600 (Type 2645-310) stops and hang during bootup. What happens is: 1. LED test, then green Power on and orange battery/charging 3. RAM OK (Responds when I take out /put in different amount of RAM and displays correctly. I have 128 + 32 removable, + 32 internal not possible to take out) 2. I can hear fan, CD drive and evt diskette drive. If I use diskette drive the LED wil give 1 blink, if I use CD drive it will give 14 blink. 3. No cursor seen, but this is displayed: Upper left show the amount of RAM present: 196032 KB OK Upper right IBMs logo in blue; IBM Lower left shows "ThinkPad(R)" in large letters and red dot over "i". 4. Then a "rrrrrr" sound from the loudspeakers after a while, this is in fact 28 clicks shortly after each other. Then nothing more happens. Diskette and CD drive is OK (But can not be used because bootup is never finished). I hear CD speed up and then down again but nothing more happens. No effect in booting with bootable diskette or CD, "Live Linux" CD or else. Backup battery OK (3V) and if I take it out I will be asked for correct date and time when Power on. I can then use keyboard or TrackPoint to set date and time, and after that hangup at the usual point. Starting without battery, HDD, CD drive and removable memory sticks makes no difference in symptoms. Pressing and holding F1 before and during poweron and startup (in order to enter BIOS and selftest) has no effect. I could not find help on IBMs home page, but maybe I did not look at the right place. Is somebody able to help me?

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