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- Newsgroups: comp.sys.amiga.hardware
- Path: news.kei.com!ub!dsinc!scala!news
- From: dave.haynie@scala.com (Dave Haynie)
- Subject: Re: HD problems
- Sender: news@scala.scala.com (Usenet administrator)
- Message-ID: <1996Jan16.222019.10420@scala.scala.com>
- Date: Tue, 16 Jan 1996 22:20:19 GMT
- Reply-To: dave.haynie@scala.com (Dave Haynie)
- References: <4d8jom$242c@serra.unipi.it>
- Nntp-Posting-Host: gator
- Organization: Scala Computer Television, US Research Center
-
- In <4d8jom$242c@serra.unipi.it>, buonomo@cli.di.unipi.it (Lorenzo Buonomo) writes:
-
- >Please help me to solve my HD problems.
-
- Damn! Problems so severe you had to dust off the old C64 just to post
- to the net -- I couldn't help but feel sorry for you.
-
- >I've a standard A1200 expanded with an
- >68030+68882 50Mhz accellerator and 8Mb
- >of Fast ram, and kickstart 3.0. I've
- >also a Maxtor 7540av HD and it works
- >fine. I've decided some months ago to
- >install a second HD to install linux
- >68K version on it. I've initially
- >bought a seagate st850 but the two
- >drives toghether dont' worked fine;
- >after two or three hours of using
- >the seagate drive turned itself off.
- >So i changed the seagate drive for
- >a Quantum Fireball 1080A but the problem
- >was the same.
-
- That really does sound like a power problem. Some SCSI drives can run
- a power up recycle when the think there's a problem on the bus, I
- don't know there's anything like this typically done on IDE.
-
- >I don't know why this thing happens but
- >i believe that is not for a low power
- >(i use a 200W power).
-
- You have a 200W brick for the A1200? That may help the A1200, but how
- about your drive? If you're sucking power through the laptop-style
- 44pin cable, you may be SOL for some honkin' AV drive, not to mention
- two drives. These things suck power, bigtime. I have a Seagate
- Barracuda 2.1 GB drive at home. It put the hurt on two external SCSI
- boxes. And these weren't just cheap-ass computer show SCSI boxes, they
- were once used as external drive boxes for Sun & DEC workstations.
-
- With some voltage problems, I recommend hooking up a volt meter on the
- thing in question. It's one thing to belive you have no voltage
- problems, another thing to know it. However, you may not even be able
- to see the problem, it's likely to be a surge-based dropout, as both
- drives start coming up, sucking the +5V and +12V down below reasonable
- levels. Also, what do you know about your 200W supply? How much +12V
- versus +5V is available. Some of these things give you a honkin' +5V
- supply, to make your add-ons, like accelerators (an '040 can take more
- power than the reast of the A1200) and memory. Some drives these days
- are actually +5V-only, but others use +5V just for logic, +12V for the
- mechanicals.
-
- >I take the power for the HD from the disk drive
- >connector inside the A1200. Is perhaps this the problem?
-
- "Yowza! We have a winner. Mr. Bongo, tell the nice young man
- what he's won!"
-
- "Thank you Dave. Our first contestant on 'Not With My System
- You Don't' has won a Real Hard Disk Power Cable, courtesy of
- your friends at damn near any Radio Shack in the country".
-
- "But he's in Italy"
-
- "So, he sneaks into a PC shop and clips one out of an open PC
- while no one's looking. We don't pay postage, tax, or dealer
- destination charges!"
-
- Anyway, yeah, you don't want to power anything by baby low-power
- drives off that 44-pin cable. Get a real hard disk cable. Get out that
- voltmeter, find good, largish places for tapping off +12V, +5V, and
- ground (near the power connector somewhere would be my guess, I don't
- know the A1200 guts all that well).
-
- >Another question.
-
- BZZZT! Your time is up!
-
- >After launching HDToolsBox for the 1GB drive this
- >program give me all tracks over 2048
- >as broken (but i use them fine as linux).
- >Is this a problem of that program?
-
- Not likely. I would double-check my math here. SCSI doesn't care about
- tracks, heads, cylinders, or much anything other than
- blocks. HDToolBox will read the drive and use what it says as the
- drive's size. That could be 1 head, one sector/cylinder, like some
- drives report, or other fictional reports. If you're worried about
- sectors, for some reason, there's a fair chance that Linux is using
- different numbers for the drive than HDToolBox. The probably add up
- the same.
-
- Dave Haynie | ex-Commodore Engineering | for DiskSalv 3 &
- Sr. Systems Engineer | Hardwired Media Company | "The Deathbed Vigil"
- Scala Inc., US R&D | Ki No Kawa Aikido | info@iam.com
-
- "Feeling ... Pretty ... Psyched" -R.E.M.
-
-