Replacement Hard Drive for SE/20?

[Everett1954]

Hi,

I have a SE with  a bad internal 20MB hard drive that will not format.

Any suggestions where i can find a compatible drive?

What are the specifications i need to look for, i know 50 Pin SCSI 1 drive?

How big of drive can i replace it with?

Thanks,

Everett:

i have some 3rd party external drives in enclosures , none are recognized when connected using HD setup, i am not sure if they are bad or i need a different version of HD Setup.

Could i use one the drives to replace the internal

 

[Macdrone]

Ok first if the internal is bad the externals may or may not work when connected.

Also have you had the motherboard recapped?  SE/30's are notorious for bad inconsistent working with faulty capacitors.

HD setup will not most like format non apple drives.  Look for Lido or hard disk toolkit.

 

[techknight]

Unless you find the patched version

 

[Macdrone]

Still iffy with that even. Like 50/50

 

[Scott Baret]

Also have you had the motherboard recapped?  SE/30's are notorious for bad inconsistent working with faulty capacitors.

This is an issue very common on the SE/30, but the OP mentions an SE/20. Everett--is it an SE/30 or SE/20?

To tell them apart--

* The SE/30 is the model with the 68030 processor. Most are marked SE/30 unless someone did a logic board swap and kept the SE's original bezel.

* The SE/20 is NOT a machine with a different processor. Instead, it's simply any Macintosh SE with a 20MB hard drive installed. This was a common marketing term back when the SE was new. At one point, all SEs had 20MB MiniScribes (this changed later in the computer's production run), so if the machine was a stock SE/20, it meant it had a 20MB drive, not a 68020. These computers are never designated SE/20 on the front bezel as the SE/30s are. (The 20MB sticker was on the back for US versions, and there was typically something like 1/20 on the front in some countries--but never "SE/20").

Basically, the SE/30 is its own model with its own processor, RAM upgrades, specs, etc. The SE/20 is a way to refer to a Mac SE (regular model) with a 20MB hard drive.

The reason this is important? The SE/30 is notorious for leaked caps on its logic board, but the SE doesn't have the cheap caps of its more powerful, initially more expensive brother.

 

[Elfen]

Funny - I use SE/20 as a name for those SE's with an '020 accelerator in them as I used to have one. It was a great machine.

 

[rsolberg]

Well now I want to find an SE/ 20MB HD model and add the '020 accelerator. I dub thee "SE/20/20".

 

[Macdrone]

Never seen a label that says SE/20

 

[Cloaked Alien]

I can't speak for the SE machine but I do have a SE/30 with a 8GB SCSI drive plucked from an old server. The drive has a SCA connector so I have to use a SCA to HD50 adapter. SCSI is very good at being backwards compatible, as long as you make sure to have proper termination (I got an adapter with active termination rather than the cheapest route).

Mind you, I only have a 2GB partition on it, but I've used the other space to experiment with A/UX (Apple Unix) dual-boot environment.

Edit: Oh, and if you use a non-apple drive you probably have to modify the front HDD Activity LED-connector a wee bit. I had to extend the cables on mine to be able to connect it to the adapter.

 

[Everett1954]

Hi,

 The mac is an SE (there is no SE/20 designation as mentioned) with 1 20MB hard drive installed, 1 800k floppy drive and  1 meg of ram.

 The external drives do not work with a Macplus I have also, I can hear them spinning and the trying to read write but they do that forever and never show up in the finder or with HD setup SCSI scan.

 The internal HD on the SE does not show up in the finder and when I use HD Setup to find and initialize it if fails the initialization.

 The SE also has a bad internal floppy that will not read any of my 800K dd disk,and has a hard time eject them too. luckily i have an external 800k drive that works fine.

 Its tough troubleshooting when so many items appear to be defective.

The SE does boot from the external floppy just fine. Any other thoughts on a replacement internal drive? What I can use, where i can get one? Does the LIDO program work with  internal apple drive? I don't have it but can get it from rescuemyclassicmac.com, a great resource for old system related disks.

I have heard that you need a patched HD setup for 3rd party drives. 

Thanks,

Everett

 

[Everett1954]

Oh forgot to ask, how important is it to terminate the external drives? i have no SCSI terminators. I put the external drives on one at time and have not daisy chained them.

Everett

 

[Elfen]

Depending on various factors, it is very important to have termination on a SCSI Chain. Some machines like the IIfx are very persnickety about termination.

Some devices come with terminators already in them, finding out which ones you would need to open the up and check or look at their port sections and see if there is a switch for termination (like Zip/Jazz Drives do). When you find out which ones are terminated, put those terminated ones on the end of the chain.

 

[rickrob]

I replaced a bad Quantum ProDrive 20MB drive in my SE/30 with a 500MB Apple/Quantum ProDrive LPS 540S. I had to make an adapter for the LED, as the connectors are different.  It came out of a Power Mac 6100, but worked great. 

You can find them on that Auction site.. (Sorry, don't know the forum rules about mentioning other sites...)