Category Archives: ThinkPad

Removable CF Card, or Not

This is from the “learn something new every day” category. I’ve been using CompactFlash cards together with IDE adapters for several years now. It’s a terrific way to manage storage for vintage PCs. CF cards are cheap, fast, (relatively) capacious, … Continue reading

Posted in CompactFlash, Storage, ThinkPad | 19 Comments

Zapping the SVP on a T42p

A T4x ThinkPad with a supervisor password is a ticking time bomb. The password is not needed during boot and is only required to change certain BIOS settings, something which isn’t typically needed. But if CMOS settings are lost, the … Continue reading

Posted in Hardware Hacks, ThinkPad | 4 Comments

ThinkPad PC Card Boot?

I have several 1990s ThinkPad laptops which all have PCMCIA slots. Some have a built-in CD-ROM and no floppy drive, and no support for CD booting. It would be rather useful to boot them from PCMCIA ATA cards, and the BIOS … Continue reading

Posted in PCMCIA, ThinkPad | 23 Comments

OS/2 on ThinkPad T23 and T30

Recently I had a need to install IBM’s OS/2 on real hardware rather than in a VM, and for various reasons I wanted “genuine” IBM OS/2 and not eComStation. One of IBM’s older ThinkPads was a logical choice. A T42p … Continue reading

Posted in OS/2, ThinkPad | 11 Comments

ThinkPad 701 Restore Using CF Media

Thanks to a kind reader, the OS/2 Museum obtained a file archive of the ThinkPad 701 recovery CD. The 701C/701CS was also known as Butterfly thanks to its unique folding keyboard. The recovery tool appears to have been designed for … Continue reading

Posted in IBM, ThinkPad | 23 Comments

ThinkPad 850 Hardware Maintenance Manual

Thanks to a very helpful reader (Mike Senior—thanks!), the OS/2 Museum can now publish the ThinkPad Power Series 850 Hardware Maintenance Service and Reference manual in the form of a PDF. This is IBM document number 30H2383. The manual might … Continue reading

Posted in Documentation, PowerPC, ThinkPad | 5 Comments

Butterfly Conservation

The OS/2 Museum recently acquired one of the famous IBM 701 ThinkPads, commonly nicknamed “Butterfly” thanks to the fold-out keyboard. Unfortunately, the unit suffered a fate common to many old ThinkPads—battery leakage. The unit would power on, but it had … Continue reading

Posted in PC hardware, ThinkPad | 3 Comments


I recently tried to revive an old ThinkPad 600 (with a 300 MHz mobile Pentium II processor). The system wouldn’t boot up and reported errors (173, 163) which are usually a good indication of a dead CMOS battery. In a … Continue reading

Posted in PC hardware, ThinkPad | 2 Comments

IBM ThinkPad 755CD

An earlier article about PowerPC-based ThinkPad 850 mentioned that the 850 was a close cousin of x86-based ThinkPads of the era. The OS/2 Museum now takes a look at one of those laptops, and interesting laptop in its own right: … Continue reading

Posted in IBM, ThinkPad | 5 Comments

Cracking a ThinkPad 755C

Note: Most of the following information does not apply to any Lenovo-made ThinkPads or even IBM-made ThinkPads manufactured after circa 1999. If you have one of those laptops protected with an unknown password, please look elsewhere. Imagine you bought, found, … Continue reading

Posted in IBM, PC hardware, ThinkPad | 16 Comments