Recovering data from Mac hard disk


We recently had a PowerMac G5 go down pretty hard.   The main hard drive won’t respond to Disk Repair, or fsck repair attemps.  It also won’t respond to an attempt to re-install the OS X media.

Before either attempting to nuke the drive and/or putting in a new hard drive, I thought I’d explore trying to recover data.  It appears that the most commonly recommended software is Alsoft’s Data Warrior.   I also found another program called Data Rescue II by Prosoft Engineering. Data Rescue II has a demo version available, but unfortunately they charge for the download of the bootable CD image trial version.

My main questions are :  does anyone have any feedback or experience on either of these programs, and whether they stand any chance of recovering data?  And also, does anyone have a bootable version of either of the above they may be able to loan out?

I have used Alsoft Disk Warrior on several occasions.  In my experience, while it is slow, it has a very high success rate.  Only once was it unable to recover data from a dead HD.  I highly recommend you go with Disk Warrior.

1.6L crank observations

1.6L crank observations
Ok, ‘scuse me if any of this is wrong , heavy on the meds lately .
1298cc Swift GT DOHC engine- forged steel
All other 1.3L and1.6L engines are cast , some are just a better quality ( such as later model ’92 1.6’s )
Indeed, the 1324cc Sami rockers are the strongest , mostly due to geometry and using high duration cams w/wild overlaps (read-Z330 Isky) .
The reason the 1324cc doesn’t hurt it’s center bearing is due to the short stroke , folks that have fitted the 1.6 crank into that block have hit issues with flexing and center bearing failure at high revs .
The 1.6L engines with the thin rods , <’92 have a serious issue above 5k . Yes , some still survive and are wound to infinity but once in awhile someone gets lucky .

The main cap girdles on the 1298cc Swift GT and late model 1.6L engines does help , although not substantially .

Hope that helps,

Wider pilot bearing to fix worn input shaft

Wider pilot bearing to fix worn input shaft

The wider bearing works. Saved me a lot of time and $$. Bearing needs to be installed completely against the end of the crank. Check the clearance between the installed bearing and the non-machined part of the input shaft (you don’t want the “fatter” part of the tranny input shaft to press on the side of the center part of the bearing and put a side load on it). You can get the wider bearing for about $11 online shipped. The part number is either a 5200-2RS or 3200-2RS (both are the same size bearing, just different part numbers).

MacNN | CodeWeavers releases CrossOver Mac

MacNN | CodeWeavers releases CrossOver Mac
CodeWeavers has released CrossOver Mac, its software that enables Mac OS X users to install and use Microsoft Windows applications without actually installing Windows. CrossOver Mac offers an easy-to-use single-click interface that, once loaded, integrates seamlessly with Mac OS X, according to CodeWeavers. Mac users can simply click on Windows applications in the Finder to run them under Mac OS X, and the same applications are loaded similarly from their install disks. CrossOver Mac supports numerous popular Windows applications such as Microsoft Office; Microsoft Viseo and Project; Intuit’s Quicken and QuickBooks; and games such as Half Life 2 and Prey. CrossOver Mac is priced at $60 for the download version or $70 for the CD version, requiring an Intel-based Mac running Mac OS X.

Tracker 3-speed toast? – Pirate4x4.Com Bulletin Board

Tracker 3-speed toast? – Pirate4x4.Com Bulletin Board
Not an autotranny expert by any means, but getting more knowledgeble with them. I have a three speed tracker tranny, 96, They are either the th180C or the 3L30. Same thing really. They are really basic inside as I had a friend rebuild mine (tranny shop owner). The bands on mine were good, but the clutch packs were toast. It had 3 clutches per gear set-up, which is very common, but he machined out a few parts and was able to fit 5 clutches in. He also adjusted the pump pressure with different springs. He told me that the number one problem that burns these up within a few mile is the vacuum modulator not on correctly,adjusted properly, no vacuum to it, not the right one, ect… He said that would not make the pressure build correctly and toast the clutches.

The Lock-up converter is useless on most of these. Only need it when useing it on freeway to conserve fuel and extend tranny life.

The kick down cable plays a important roll on these as well as it is not wise to manually downshift them very often. Small planetaries I guess can go BOOM. same goes for drive to reverse too often and too quickly.

One very important note on these trannies I found out. When wheeling them, Use it in 1st gear then shift to second manually. The workings of these trannies is this… In 1st gear manually (lever in the 1st position), you are useing the 1st and 3rd gear bands and clutches together, When in Drive only, you are only on the 1st gear band and clutches. You get more holding power and less chance of failure with it in 1st manually. I have a whole sheet explaining this and will find it and quote it exactly.

Mine really holds well now, I think I should get a new torque converter as mine is really old, and I was told that a custom made one will be a bit more costly, but the performance gain will be great if it matches the vehicle. Search the general 4×4 board for auto tranny info, there was a post of this there also for torque converter information in general.

TV Technical Notes

Sorry, but I can not resist adding a few technical notes. I was involved in
the very serious national fights over TV formats in 1996 and 1997. Those
fights were primarily over the debate over Interlace Television versus
Progressive Scan Television. The core issue is that Interlace television
was invented in the 1930’s as a method of doing ANALOG compression. In
Interlace pictures, the image is divided into to fields, Odd and Even. The
Odd field is projected first (lines 1, 3, 5…) then the even fields are
projected, with a very slight offset between the fields. It takes a very
large amount of analog bandwidth to display a full picture every 60th of a
second. By using interlace compression, you effectively send only half of
the picture in a 60th of a second and then the other half a 60th of a second
later. The net result is interlace pictures only generate full frames every
30th of a second. Only television uses Interlace scanning. Computers use
progressive scanning – line 1 then 2 then 3… all in order, with no
interlace artifacts. Progressive scanning sends the entire picture every
60th of a second. So when you see manufacturers such as Sony describing
1080 interlace, what they are really saying is 1080/30i, where you get 1080
lines every 30th of a second. The 720 progressive system is 720/60p, or 720
lines every 60th of a second. 1080 interlace is therefore only 540 lines
every 60th of a second, so 720p actually delivers HIGHER resolution every
60th of a second than 1080 interlace. So, 1080 advertising is basically a
LIE – hucksters believe a large number is better – 1080 is a larger number
than 720, so hucksters claim 1080 is better. It is NOT better, it is just a

Why should you care? 1080 interlace was invented for use with Cathode Ray
Tube (CRT) TV sets – old technology. 720p was invented for use with flat
panels, such as LCDs and Plasma (it also works with CRTs). Modern
electronics are such that you can convert anything to anything, but there is
no free lunch – conversion damages the image quality. So, if you will be
watching your pictures on LCDs or plasma, then native 720p signals will
always look better. If you are watching on a CRT giant TV, you can argue
that 1080i looks better. The real difference occurs with sports. 1080i
sports look terrible – remember, they are only sending out a full frame
every 30th of a second, so fast sports action looks blurry. 720p signals
(on ABC, Fox, ESPN) are sending 60 frames a second, so the sports action is
much more realistic.

There is a lot of advertising hype about 1080 60 progressive. Only video
games generate this format. US television will never (at least not in the
next 50 years or so) broadcast this format – it does not exist, so any adds
you see are basically lies. What these sets do is cheat – they take an
interlace signal and send it twice to the set, so there is actually no
additional content. This is a means to basically continue to sell 1080
interlace equipment to broadcasters.

The other subtle issue concerns digital compression. That slight offset in
lines caused by interlace scanning looks like noise to digital compression
systems, therefore, it takes more bandwidth to compress interlace signals
than it does for progressive signals. High motion content (sports) causes
large problems for digital compression. 720 progressive signals compress
much better (less artifacts) than interlace signals, so for sports,
progressive signals just look better.

If you really want to see the difference, you have to watch a live football
game on ABC or Fox or ESPN. Live football on these networks is just
stunning – you can’t believe how real the pictures look. However, on CBS
and NBC, they use 1080i equipment, so sports just do not look as good.

So for BOUNDERS, because of size, weight and power, you need to get a LCD
HDTV set. If you really like fast action sports, you need to get a LCD TV
that does native 720p.


5. for those considering route 66 with GPS
Posted by: “alice magooey” alicemagooey
Date: Tue Jan 9, 2007 1:42 pm ((PST))

i received this letter e mail from route 66 support

Thank you for your interest in ROUTE 66 products.

ROUTE 66 Route 2004 is the latest available version.

In order to use the GPS option in the ROUTE 66 program, the GPS device must
meet the following requirements:
– The protocol used by the GPS device must be fully NMEA-0183 2.0
(or higher) compatible.
– The minimum protocol requirements are that the RMC sentences have
to be sent.
– The MAPDATUM used in the ROUTE 66 program is WGS-84.

If you are using a Keyspan USB Serial Adapter (USA-19), you have to download
the Keyspan USB Serial Adapter Software for Mac OS X version 1.4 and install
it on your computer (

If you are using a USB or PCMCIA GPS receiver, please install the driver
supplied by the GPS manufacturer.

The Bluetooth GPS receivers that meet the above mentioned requirements are
compatible with the ROUTE 66 software and do not require additional software
to work.

Please note that the following GPS receivers are not compatible with “ROUTE
66 Route 2004”:
– DeLORME Eartmate USB
– Garmin USB
– Navman USB

Information regarding GPS systems can be found at:
– Royaltek [ ]
– Leadtek [ ]
– Holux [ ]
– Haicom [ ]
– Pharosgps [ ]
– Emtac [ ]
– Globalsat [ ]
– Mehaffey [ ] (biggest GPS info site we
– GPS24 [ ] (info)

Best regards,
route 66 customer service