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Unix, Xenix and ODT General FAQ

This article is from a FAQ concerning SCO operating systems. While some of the information may be applicable to any OS, or any Unix or Linux OS, it may be specific to SCO Xenix, Open There is lots of Linux, Mac OS X and general Unix info elsewhere on this site: Search this site is the best way to find anything.

How can I download a boot disk (Old Sco Unix)?

Note: modern versions have boot images on the CD and tools to create the floppies from Windows or Unix platforms. CHECK YOUR CD FIRST. See How can I recreate my install floppy?

See also https://aplawrence.com/Basics/floppy.html

(contributed by Bela Lubkin)

A more current version may be at https://www.lubkin.com/SCO/boot-media.html

Someone named Chip is looking for a boot disk for some release of SCO Unix or OpenServer -- I've lost track of the details.

This prompted me to dredge up my old list of FTPable SCO boot disks (couldn't find it via google, I thought they claimed they now had all of USENET back to the beginning?) -- but I found a quote of most of it.

I've updated it by adding some new items, and fixing all the URLs so they point to machines and directories that actually exist as of 2002-02-07. Since this is an external directory of information maintained by other people, it's entirely subject to change.

Herewith, please find a list of boot disks for "SCO" operating systems. It attempts to be comprehensive, but I may have missed a few. If your exact OS flavor is missing, a "nearby" version might work. If multiple images are listed for a particular version, read their cover letters or try them serially.

The URLs generally point directly to the file that contains the boot image; however, you would be wise to look in the same directory for related materials such as cover letters.

Some of the disks listed may in fact be of such specialized purpose that nobody could possibly use them any more...

I expect this to be archived by google and thus searchable for many years to come.

 URL                                                  Operating system(s)
 ==================================================== =====================================
 N/A                                                  Xenix < 2.3.2, Xenix 286 MCA
 ftp://ftp.sco.com/pub/SLS/xnx264.n1.Z              Xenix 2.3.2 286 ISA
 ftp://ftp.sco.com/pub/EFS/efs100.n1.Z              Xenix 2.3.2 386 MCA 3.5" (SCSI)
 ftp://ftp.sco.com/pub/SLS/xnx232b.n1.Z             Xenix 2.3.2 386 MCA 3.5" (ESDI)
 ftp://ftp.sco.com/pub/EFS/efs124.n1.Z              Xenix 2.3.4 386 MCA 3.5"
 ftp://ftp.sco.com/pub/EFS/efs132.n1.Z              Xenix 2.3.4 386 ISA 3.5"
 N/A                                                  Unix 3.2.0, ODT 1.0
 ftp://ftp.sco.com/pub/EFS/efs1.135.n1d.Z           Unix 3.2v2.0/ODT 1.1 ISA 3.5"
 ftp://ftp.sco.com/pub/EFS/efs1.135.n1t.Z           Unix 3.2v2.0/ODT 1.1 ISA 3.5"+tape
 ftp://ftp.sco.com/pub/EFS/efs1.96.n1d.Z            Unix 3.2v2.0/ODT 1.1 ISA 5.25"
 ftp://ftp.sco.com/pub/EFS/efs1.96.n1t.Z            Unix 3.2v2.0/ODT 1.1 ISA 5.25"+tape
 ftp://ftp.sco.com/pub/EFS/efs1.mc.n1d.Z            Unix 3.2v2.0/ODT 1.1 MCA 3.5"
 ftp://ftp.sco.com/pub/EFS/efs1.mc.n1t.Z            Unix 3.2v2.0/ODT 1.1 MCA 3.5"+tape
 ftp://ftp.sco.com/pub/EFS/efs114.n1                Unix 3.2v2.0/ODT 1.1 ISA 3.5"
 ftp://ftp.sco.com/pub/EFS/efs117.n1d.Z             Unix 3.2v2.0/ODT 1.1 MCA 3.5"
 ftp://ftp.sco.com/pub/EFS/efs117.n1t.Z             Unix 3.2v2.0/ODT 1.1 MCA 3.5"+tape
 ftp://ftp.sco.com/pub/SLS/oda366b.n135.Z           ODT 2.0 3.5"
 ftp://ftp.sco.com/pub/SLS/oda366b.n196.Z           ODT 2.0 5.25"
 ftp://ftp.sco.com/pub/SLS/unx365b.n135.Z           Unix 3.2v4.0/4.1 3.5"
 ftp://ftp.sco.com/pub/SLS/unx365b.n196.Z           Unix 3.2v4.0/4.1 5.25"
 ftp://ftp.sco.com/pub/SLS/uod383bun1.Z             Unix 3.2v4.2
 ftp://ftp.sco.com/pub/SLS/uod383bon1.Z             ODT 3.0
 ftp://ftp.sco.com/pub/SLS/uod429a.Z                ODT 3.0, Unix 3.2v4.2 3.5"
 ftp://ftp.sco.com/pub/SLS/cmw490a.Z                CMW+ 3.0
 ftp://ftp.sco.com/pub/openserver5/oss431a.boot.Z OpenServer 5.0.0
 ftp://ftp.sco.com/pub/SLS/oss444a.Z                OpenServer 5.0.[02]
 ftp://ftp.sco.com/pub/openserver5/oss463b.n0     OpenServer 5.0.4
 ftp://ftp.sco.com/pub/openserver5/oss604a.boot   OpenServer 5.0.5
 N/A                                                  OpenServer 5.0.6
 ftp://ftp.sco.com/pos/demo/demofloppy/demofloppy.image  SCO POS demo
 N/A                                                  UnixWare 1.0
 ftp://ftp.sco.com/UW11/boot1.tar               UnixWare 1.1
 ftp://ftp.sco.com/UW20/2069as.dd               UnixWare 2.0.x Application Server
 ftp://ftp.sco.com/UW20/2069pe.dd               UnixWare 2.0.x Personal Edition
 ftp://ftp.sco.com/UW20/tf2183.boot.as          UnixWare 2.0.1 Application Server
 ftp://ftp.sco.com/UW20/tf2183.boot.pe          UnixWare 2.0.1 Personal Edition
 ftp://ftp.sco.com/UW20/tf2219.boot.as          UnixWare 2.0.[123] Application Server
 ftp://ftp.sco.com/UW20/tf2219.boot.pe          UnixWare 2.0.[123] Personal Edition
 ftp://ftp.sco.com/UW21/ptf3035.boot.dd         UnixWare 2.1.[01]
 ftp://ftp.sco.com/UW21/ptf3256.boot.dd         UnixWare 2.1.[012]
 ftp://ftp.sco.com/UW21/upd213/boot213.img.C    UnixWare 2.1.3
 ftp://ftp.sco.com/pub/unixware7/ptf7055b.bt1.dd  UnixWare 7.0.0
 ftp://ftp.sco.com/pub/unixware7/ptf7055b.bt2.dd  UnixWare 7.0.0
 N/A                                                  UnixWare 7.0.1
 ftp://ftp.sco.com/pub/unixware7/ptf7425b.bt1.dd  UnixWare 7.1.0
 ftp://ftp.sco.com/pub/unixware7/ptf7425b.bt2.dd  UnixWare 7.1.0
 ftp://ftp.sco.com/pub/unixware7/ptf7619d/        UnixWare 7.1.1
 N/A                                                  Unixware 7.1.3
 N/A                                                  Open UNIX 8.0.0

A helpful site for DOS and Windows boot disks is https://www.bootdisk.com

Got something to add? Send me email.

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-> (SCO Unix) How can I download a boot disk? Finding Boot Media

Mon Feb 20 04:02:08 2006: 1668   anonymous

What do you do with these .Z files ... nothing reads them ... rawrite says its not a valid file.

Mon Feb 20 11:16:02 2006: 1669   TonyLawrence

.Z files are compressed. "uncompress" expands them.

Tue Nov 14 22:35:27 2006: 2617   anonymous

What can I expand a .boot file with? - Jeff

Wed Nov 15 10:29:02 2006: 2618   TonyLawrence

Who says it's compressed?

If it is, "file yourfile.boot" will tell you what it is. Rename it appropriately and unpack it. For example:

$ file y
y: compress'd data 16 bits
$ mv y y.Z
$ uncompress y.Z

Tue Aug 28 07:25:57 2007: 3086   anonymous

What do you do with the .n1 files inside the .Z file? Just copy to the floppy?

Tue Aug 28 08:36:20 2007: 3087   TonyLawrence

Yes, though you have to "dd" them.

See (link)

Tue Aug 28 19:14:48 2007: 3093   anonymous

Thanks for the help, TonyLawrence

Mon Mar 25 19:37:43 2013: 11990   anonymous


ok i got the .boot file for the dead pc. I have a working windows pc in order to TRY to make a working boot disk, but there is nothing on what to do in windows to create the floppy

Mon Mar 25 19:42:58 2013: 11991   TonyLawrence


You need something like RAWRITE

See (link)


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