Monday, August 17, 2009

Notes about Snow Leopard and 64-Bit Support

Need help with your Mac, iPod or iPhone? Contact Victor Orly!
(310) 891-6820 x101 or email

It looks like not all users understand about 64-bit support in snow leopard.
So, here is how it works:

on all Macs, except xserve, system boots by default 32-bit kernel.
This kernel can run 64-bit apps justs fine on core 2/core i7 based cpuz.
64-bit kernel works only on macs with 64-bit efi, this is limitation set by Apple,
technicaly 64-bit kernel can be launched by 32-bit efi just fine.
also Apple disabled 64-bit kernel support for any macbooks, even with 64-bit efi.
64-bit Kernel can run both 32 and 64 bit apps.
On hackintosh only cpus with ssse3 can run 64-bit kernel/apps, its core2/corei7 based cpus.
if kernel is 64-bit, then it can load only 64-bit kexts.
if kernel is 32-bit, then it can load only 32-bit kexts.
Userspace program cant load plugins with other architecture, for example menumeters will work only when you booted legacy, so menubar created by 32-bit application.
Quicktime uses InterProcess Communications(IPC) to load 32-bit codecs in 64-bit player.
64-bit safari uses IPC to load 32-bit flash player plugin.

To try to boot x86_64 kernel on Macintosh, edit this file:


find there:

Wednesday, August 12, 2009

Review: Mophie Juice Pack for iPhone 3GS

Need help with your Mac, iPod or iPhone? Contact Victor Orly!
(310) 891-6820 x101 or email

The iPhone 3GS is awesome except for one thing: its battery life, or lack thereof.

My battery experience had been awful. Recently, I was on a flight from Chicago O’Hare to San Diego with my new 32GB iPhone 3GS in airplane mode. When I boarded the flight, my battery charge was 85 percent. During the flight, I shot two videos about two minutes long each. I composed 17 emails, some attaching the videos. I also listed to music and watched a movie I purchased from iTunes. By the time I landed, the battery went from 85 to 27 percent.

Jason O'Grady previously posted some suggestions for extending an iPhone’s battery life, including…

1. Minimize use of location services
2. Turn off push notifications
3. Fetch new data less frequently
4. Turn off push mail
5. Auto-check fewer email accounts
6. Minimize use of third-party applications
7. Turn off Wi-Fi
8. Turn off Bluetooth
9. Use Airplane Mode in low- or no-coverage areas
10. Adjust brightness
11. Turn off EQ
12. Turn off 3G

So, in order to keep our iPhones running longer we should revert to iPhone 1.0? It sounds like Apple wants me to use my iPhone 3GS as an iPod touch. Gee, thanks Steve. I upgraded from the original 8GB iPhone 2G to the new 32GB iPhone 3GS because I wanted a better phone. I don’t like to scale down or compromise on my toys so I began researching external battery packs.

Before I settled on the Mophie Juice Pack, I bought the KONNET PowerKZ from Amazon. It is designed to fully wrap around the iPhone. It adds a bit of bulk, but I liked the idea of a full enclosure. Sadly, this unit was terrible… pieces were falling apart (like the actuator to the iPhone’s upper power button), and whenever I would get a text message, the iPhone would make the “chirp” sound that it makes when you plug in external power. It was like the Konnet unit was going offline momentarily when the phone was receiving data.

I returned it a few days later and purchased the Mophie Juice Pack 3G from Amazon instead.

While the Mophie Juice Pack 3G doesn’t fully wrap around the phone, it is superbly constructed, and works perfectly. If is also fully iPhone qualified by Apple. I’m not sure if the Konnet PowerKZ was or not. If your iPhone is not fully charged, when you plug in the Mophie, it will recharge your phone to fully capacity, assuming the Mophie is fully charged itself. Best thing though, if your iPhone is already charged, it will draw power from the Mophie first before using the internal battery. I tested it out.

I woke up at 7 a.m. yesterday and put the fully charged iPhone in the fully charged Mophie Juice Pack 3G. During the day, I made heavy use of Twitter, Facebook, recorded some video, took pictures, plenty of emailing and Safari use. I played Flight Control, Monopoly and watched some movie trailers. I did not plug the phone into the car charger at all during the day. When I got home around 8 p.m. I heard the “chirp” once as the iPhone changed power source to the internal battery. 13 hours had gone by with heavy use and my internal battery only now began to drain.

Mophie also makes a slimmer model, called the Juice Pack Air, which fully wraps around the phone. I chose the Juice Pack model merely because I wanted the most battery life. The Juice Pack 3G has an 1800 mAh battery, vs. 1200 mAh in the Juice Pack Air.

The only thing I wish the Mophie had were a combination LED flash / flashlight… and with the flash that actually worked on demand when you use the iPhone’s camera, either from still photos or for video capture.

Well done, Mophie.