moitoso%lada@Sun.COM (Bob Moitoso) (07/13/89)
I want to add a hard disk to a MAC 512, is this possible? If so how do I go about it? What do I need to add to the MAC 512 beside the hard disk. Thanks. Bob
twakeman@hpcea.CE.HP.COM (Teriann Wakeman) (07/14/89)
There are three posibilities for adding a hard drive to a 512K
1. get an old parrellel interface hard drive. I do not think anyone still
makes these, but if you shop around, one might be found cheaply. Apple
sold a large number of 20 Meg driver.
2. Add the 128K ROMs and a third party SCSI board. The third party
boards use the battery opening in the back of the enclosure for the
SCSI connector. This will allow you to use most any SCSI drive.
3. Locate a old style internal non-SCSI hard drive. I don't know of any
being built these days but you may be able to find one if you poke about.
The old Hyperdrives are an example of these {my old Hyperdrive 20s were
however reliably unreliable}.
Speeds: SCSI drives of course are the fastest option. parallel drives are
about half way between the speed of floppys and SCSI drives, and internal
non-SCSI drives are about half way in speed between parallel interface drives
and SCSI drives.
If it were me, I would get a third party SCSI drive bundled with a 2 MEG RAM
upgrade. The SCSI add-ons are always cheaper when bundled with a RAM upgrade.
There are probably other good manufacturers but I would recommend Dove
for the upgrade. They have been around & have a good reputation.
TeriAnndlugose@ecsvax.UUCP (Dan Dlugose) (07/18/89)
In article <115167@sun.Eng.Sun.COM> moitoso@sun.UUCP () writes: >I want to add a hard disk to a MAC 512, is this possible? Teriann Wakeman's response was very good. Note also that without a ROM upgrade, you will need the HD 20 file in your System Folder. I use a 512 at home (Mac II at work), and am planning to add a HD before long, BUT for users that have only access to a 512, I would consider selling and buying at least an SE if you're getting the urge for more power. Consider that Apple no longer counts the phrase "Mac family" as including anything earlier than a Plus, and this will be the last year of Plus production, and soon developers will be thinking (or wishing?) that most users have 2 megs and perhaps a MMU for virtual memory. I favor the non-SCSI drives for a 512 because my 512 has a limited life expectancy, and its market value is not being much increased by the ROM upgrade or SCSI port. Question is, can one find a non SCSI disk for sale? Dan Dlugose UNC Educational Computing Service