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- Organization: University of Illinois at Chicago
- Date: Mon, 25 Jan 1993 12:08:00 CST
- From: Darius Vaskelis <U39648@uicvm.uic.edu>
- Message-ID: <93025.120801U39648@uicvm.uic.edu>
- Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.ibm.ps2.hardware
- Subject: Re: PS/2 harddrive upgrade
- References: <1993Jan23.224538.20072@magnus.acs.ohio-state.edu>
- <1993Jan24.195937.10569@odin.diku.dk>
- Lines: 43
-
- >>My Uncle has a veterinary clinic in Waverly, Ohio. He presently runs
- >>VBOSS on a PS/2 Model 55 SX, and needs to upgrade from his present 60MB
- >>harddrive to ~120MB harddrive
-
- >According to my info, this is a 16Mhz 80386XS with and IDE controller and
- >2 disk-drive bays in the machine. In that case, you can buy almost any
- >drive. I think the cheapest will be to buy a non-IBM drive (IBM usually
- >uses Maxtor!) . It should be possible to use the existing 60
- >meg drive together with a larger drive...
-
- Whew! Don't trust that info!
-
- It is a 16MHz Intel 386SX-based machine, 16-bit Micro Channel
- Architecture. However, you cannot just plug in any old IDE drive.
-
- It uses a proprietary bus interface for hard disks, and IBM used special
- ESDI drives. Flavors made by IBM were 30, 40, 60, 80, 120, and 160M.
- These are PS/2 ESDI drives that can be used in Model 50 (with the right
- interposer card), 50Z, 55SX, and 70. They are 3.5" HH drives with power
- integrated right into the interface. (No seperate power cable...)
-
- The 55SX has two 3.5" HH bays. Generally, one is for the floppy and one
- is for the hard disk. So, to upgrade the drive, you'd need to swap the
- original drive (IBM only sold them with 30/40/60/80M drives) for one of
- the larger ones. Additionally, IBM's drives for these machines were not
- Maxtor OEMed drives. Depending on the drive, they were either IBM-made,
- or OEMed from Seagate or Western Digital.
-
- Thank god IBM chose SCSI for its current PS/2 machines. (Not mention
- it's a very speedy SCSI implementation as well!)
-
- - Darius
-
- P.S. I used to post here now and then on an unofficial basis as an IBMer.
- I have left IBM since then, so any posts are now even more
- unofficial. :) And they will probably be much rarer, as my current
- job should keep me very busy.
- --
- BITNET: U39648@UICVM | "I'd rather laugh with the sinners
- Internet: u39648@uicvm.uic.edu than cry with the saints,
- - - - - - - - - - - - - - - - - - - | the sinners are much more fun,
- "Don't set fire to strangers." and only the good die young."
- - Mr. Zarniwoop | - Billy Joel
-