Imaging an IDE hard drive with CHS addressing

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impomatic
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Joined: Wed Aug 27, 2014 8:59 pm

Imaging an IDE hard drive with CHS addressing

Post by impomatic »

Hi,

I have a couple of old IDE hard drives from the early 90s, 20MB and 170MB, with CHS addressing.

Is it possible to create an image of these with my Kryoflux, or is there a better solution?

Thanks,

John
SunDown79
Posts: 13
Joined: Tue Jun 09, 2020 4:57 pm

Re: Imaging an IDE hard drive with CHS addressing

Post by SunDown79 »

Not with kryoflux but all you need is a PC that has an IDE controller and some software tool to create an image.
There are loads of tools but one that I like, also for checking harddisks, wiping etc, is Parted Magic, it costs a little bit of money but works well. You can find it here : https://partedmagic.com/
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impomatic
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Re: Imaging an IDE hard drive with CHS addressing

Post by impomatic »

Thanks for your help. I only have a laptop, would something like this USB IDE adapter do the trick? I assume it won't be a problem if the drive is too old to support LBA - https://www.ebay.co.uk/itm/USB-2-0-to-S ... 3059281229

Thanks,

John
SunDown79
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Joined: Tue Jun 09, 2020 4:57 pm

Re: Imaging an IDE hard drive with CHS addressing

Post by SunDown79 »

Well you couldn't make a proper image of the disk through USB, you need something more direct.
But it depends on what is on the harddisk and what your purpose would be. Through USB you would be fine perhaps to copy files etc but it would depend on what filesystems your laptop would support and also how good that adapter is. I have one from Sharkoon for example and that works well, even for older drives (the really old IDE drives it has trouble with). A solution like that also gives you a power supply for the harddisk.
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brightcaster
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Joined: Fri Nov 08, 2013 10:48 pm

Re: Imaging an IDE hard drive with CHS addressing

Post by brightcaster »

I use exactly the same USB to IDE (or PATA) interface for years. I never had any problems to to make images with DD on linux. It should also be possible to copy files from all the filesystems your OS does support.

It's not a problem to connect an old harddrive to a new OS because they support CHS as well as LBA for the last decade...

David
SomeGuy
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Re: Imaging an IDE hard drive with CHS addressing

Post by SomeGuy »

First of all, IDE does not give access to flux-level information. It is all abstacted away behdind an I/O bus that recieves commands and hands you blocks of data. Earlier "MFM"/"RLL" hard drives were a different story.

Most IDE to USB interfaces require LBA addressing instead of CHS. So anything less than a gigabyte or so (actually depends on when it was made, not size) may not work.

A much easier and more reliable way to hook an IDE drive to a newer computer is to use an IDE to SATA adapter. Just stay away from the really cheap adapters. Then you can easily "dd" from a Linux system, or possibly if FAT even just copy files directly off using Windows 10.
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