Tuesday, November 25, 2008

Problems with booting system came from previos macbook on new one

After new solid case Macbook arrives I decided to put my old 500 Gig hdd from previous Macbook in the new one. Since now accessing to hard disk much easer - its just under the same cover as battery - I though it will take few minutes to spare, but in fact there are some underwater stones...
First after I did what I plan new mac boot got infinite reset cycle trying to boot from "old" HD - I had all latest updates installed to leopard so I have no idea why it wont work. Trying to boot from my Leopard 10.5.0 install dvd have no success either. So I backup my hd old system to another drive , erase and install system from dvds that comes with new macbook, then transfer user setting from backup. All done!
So, as I found new EFIs have some changes on boot code - don`t know why exactly Apple change this things maybe its a some kind of certificates those used to be updated from model to model , maybe it was just a bug - anyway I wonder if you have hard disk with Tiger version os OSX will you also get the same issues ?

Sunday, October 19, 2008

Symantec Endpoint+WinXP SP3 + VIA Rhino II VPN problem

Interesting and specific problem found. Looks like VIA Ethernet driver have some compotability issues with SP3 and Symantec security products. After installing WinXP SP3 update VPN connection stops working on authorisation phase with SEP installed. Turining off SEP protection doesnt help - only uninstalling.
As it appers Proactive threat protection installes its own network drivers that incompotable with VIA native drivers and so local network pings but traffic fails.
I tryed diffrent ways to bypass this bug but the only way I found is during SEP installation choose not to install Proactive threat protection components. Sure it make protection less effective , but its the only way to make VPN connection funtional.

Thursday, September 11, 2008

Some thoughts about overclocking....

My latest experience in overclocking AMD 9850BE inspired me to write some words for those who will go this way. This CPU, as you know, have unlocked multiplier so I start moving it higher - upto x14. Only this particular setting in BIOS - system works fine in Windows XP 32 bit = 2,8 Ghz work stable as with default value, but Vista 64 give BSOD. Playing with different CPU voltage settings I make it work - but feeling of stability gone. I try to find out whats the reason of such different results - working well in XP and crashing in Vista 64. Was found that overclocking in 64 environment- both XP and Vista make system less stable , perhaps of tighter timings. Another part of the problem - chipset - people got better results with 64 bit vista overclocking on AMD chipsets (790fx e.g) rather then on nVidia 780a chipsets. Maybe some BIOS bugs take place, maybe different motherboard have difference in voltage stability - nobody knows it for sure.
So, if you plan to overclock your AMD system and you using 64 bit OS - best choice is DFI motherboards with 790fx chipset.

Monday, September 01, 2008

Moto Q (9c, GSM, 9H) slowdown fix


Its an interesting bug found.
Sympthoms: System goes slow after sending SMS message. Partial solution is to kill tmail task everytime. It tooks time to show start menu to display any application etc.
Solution:


1st way - to switch off predictible text input








2nd way - clear Input History

Saturday, June 21, 2008

Home File Server

Finally I decided to turn my used hardware to fileserver. I took 4 my old HDDs from USB boxes and put into Asus 6AR case, add 430W Thermaltake PSU, Asus M2N SLI motherboard, Athlon X2 5600+ CPU, 1 Gb DDR2 800 dimm, ancient SONY CD-R IDE drive, S3 Virge PCI (!!!) card. So I was ready to run this file storage as local network samba storage.
I look through different software solutions and decided to choose solution based on Ubuntu 7.10 samba server. It sounds very easy to setup it on USB pen drive and easy to configure, so I begin...
It took about 40 mins to setup ubuntu on my fast USB 2.0 pen drive with 19 Mb/sec write speed. And few more hours to update/upgrade linux from network and configure samba server. I start working with one HD as shared storage and plan to connect 3 others just after successful results...I got very negative experience! First of all linux booting damn slow (got faster results in Ubuntu 8).. it took about 10 minutes to boot from USB pen drive (in text mode! no gfx interface!). After adding hard drives linux stop booting coz device names changes ( from sdb1 for USB drive to sdd1) and it takes time to configure boot loader. So its not flexible at all! Next, samba appears to be not completely compatible with Windows - it works better with XP, but with Vista there are problems not only with authentication!Finally I give up trying Ubuntu 7.10 and migrate to Ubuntu 8 - I got better results in performance, but still not good enough. I also tried so called Free NAS - because it looks more effective - only 60 Mb to run + Web control interface, but it failed to boot from USB, and when runs from Live CD it was unable to find Ethernet cards not build in nVidia 570 dual gigabit, nor PCI Realtek Ethernet card....
As a conclusion I must say all this linux solutions are not enough efficient solution for this (easy for first site ) task! Not enough to utilize full power from hardware and not 100% compatible with Windows networking. I`m going to buy additional hard drive to setup Windows Home server - as I tested - it 100% solution for your home networking needs (Vista and XP support with enhanced backup features) + hardware compatibility + ability to be as media center! linux always seems best server, storage solution for me and sad to say it loosing this battle!

Monday, March 31, 2008

Vista SP1 64 bit & nVidia GeForce 8800 drivers

Found on several systems after installation of GeForce drivers 169.x to Visa SP1 64.
After Vista boot screen with animated green line screen goes black and monitor turns to power saving mode while system seems continue loading. This nasty bug appears only (?) on 8800 boards.

The only way to see your desktop is unplug DVI cable from video board and plug it back again. This will happens every restart. Hope nVidia wil fix this in next release!