Manually set IRQ for usb2 cardbus
Hi all, I'm trying to configure an external USB2 harddrive enclosure on a HP Pavilion ze4420ca with a generic cardbus that has a NEC chip. There are numerous posts concerning problems with external enclosures and usb2 and no one seems to know a workable solution.
Hi all,
I'm trying to configure an external USB2 harddrive enclosure on a HP Pavilion ze4420ca with a generic cardbus that has a NEC chip.
There are numerous posts concerning problems with external enclosures and usb2 and no one seems to know a workable solution.
I want to try setting up a second hardware profile with certain devices disabled and manually assign irq and memory address. THis way the second profile can be used just for transferring files onto the laptop.
Ideally - if I can get it to transfer at high speed - I can use the external drives as a library, keeping everything, including a ghost image of a clean install and only using the 40G internal drive for the operating system and programs and a few Gigs of current files.
I switched the computer to standard pc in device manager - but - the manual settings for IRQ still aren't enabled (Do I have to do a clean install to force a Hal change?
I've also disabled: floppy disk controller, modem, printer port (LPT1).
What else can i disable?
Also, is there a way to sync the files back to the external storage if I've modified them?
I've posted a web page with some logs and a screenshot of system devices. http://www.geocities.com/rex_crow/
Thanks all who respond.
I'm trying to configure an external USB2 harddrive enclosure on a HP Pavilion ze4420ca with a generic cardbus that has a NEC chip.
There are numerous posts concerning problems with external enclosures and usb2 and no one seems to know a workable solution.
I want to try setting up a second hardware profile with certain devices disabled and manually assign irq and memory address. THis way the second profile can be used just for transferring files onto the laptop.
Ideally - if I can get it to transfer at high speed - I can use the external drives as a library, keeping everything, including a ghost image of a clean install and only using the 40G internal drive for the operating system and programs and a few Gigs of current files.
I switched the computer to standard pc in device manager - but - the manual settings for IRQ still aren't enabled (Do I have to do a clean install to force a Hal change?
I've also disabled: floppy disk controller, modem, printer port (LPT1).
What else can i disable?
Also, is there a way to sync the files back to the external storage if I've modified them?
I've posted a web page with some logs and a screenshot of system devices. http://www.geocities.com/rex_crow/
Thanks all who respond.
Participate on our website and join the conversation
This topic is archived. New comments cannot be posted and votes cannot be cast.
Responses to this topic
Quote:I switched the computer to standard pc in device manager - but - the manual settings for IRQ still aren't enabled (Do I have to do a clean install to force a Hal change?
Under Win2k and XP there should be absolutely no reason to assign IRQ's manually. The only one would be a badly written driver or badly designed hardware.
Please give us a bit more detail as to what exactly is going wrong. I looked through your link, but when they're all enabled, what occurs? Does the drive get a letter assigned to it? Does it show up in disk management? How old is this laptop, CPU type?
Under Win2k and XP there should be absolutely no reason to assign IRQ's manually. The only one would be a badly written driver or badly designed hardware.
Please give us a bit more detail as to what exactly is going wrong. I looked through your link, but when they're all enabled, what occurs? Does the drive get a letter assigned to it? Does it show up in disk management? How old is this laptop, CPU type?
The laptop is 1 1/2 years.
CPU Type Mobile Intel Celeron 4A, 2000 MHz (20 x 100)
CPU Alias Northwood-256
Instruction Set x86, MMX, SSE, SSE2
I have an external enclosure (SE-Series?) with an Ali chip
Theres a sticker on the inside that states that the enclosure will only work with the drive set to Master (Obviously - 1 drive is master) Well....
I thought if i put a dual ide cable and spliced the power i could get two drives working together, It worked. But...
I could never get full usb2 speed - not even close - not even with only 1 drive connected.
My 1st cardbus had an ali chip in it - it showed both drives but slow transfer speeds (somethinglike 30 min for 1G)
My new cardbus has a NEC chip which is suppose to be better from what I've read. Itried it at the store and it seemed to recognize both drives pretty fast so I thought it was good.
After I brought it home along with a 160G WD drive I was able to partition the drive (via the usb enclosure) but shortly after i started transfering files it suddenly dropped off. I'm thinking shared memory but i'm not very knowlegable on the subject.
I tried reinstalling the drivers, tried all diferent combinations of compatable and non compatable (signed) drivers until I settled on my current config. that seems to need the onboard USB1 devices to be disabled.
Now with 2 drives connected I'm getting an i/o error after transfering files.
Transfer Speeds: 5 tests aprox 700MB file
1- single drive: G - C 0:48 sec.
2- 2 drives C - G 1:24
3- 2 dives G - I (transfering between 2 externals) 0:20 sec into transfer i/o error
4- single drive: G - C 1:50
5- " " : C - G 2:35
The best time (test #1) is under 14Mb/sec nowhere close to 480Mbps. I would be happy with 100Mb.
Thanks
CPU Type Mobile Intel Celeron 4A, 2000 MHz (20 x 100)
CPU Alias Northwood-256
Instruction Set x86, MMX, SSE, SSE2
I have an external enclosure (SE-Series?) with an Ali chip
Theres a sticker on the inside that states that the enclosure will only work with the drive set to Master (Obviously - 1 drive is master) Well....
I thought if i put a dual ide cable and spliced the power i could get two drives working together, It worked. But...
I could never get full usb2 speed - not even close - not even with only 1 drive connected.
My 1st cardbus had an ali chip in it - it showed both drives but slow transfer speeds (somethinglike 30 min for 1G)
My new cardbus has a NEC chip which is suppose to be better from what I've read. Itried it at the store and it seemed to recognize both drives pretty fast so I thought it was good.
After I brought it home along with a 160G WD drive I was able to partition the drive (via the usb enclosure) but shortly after i started transfering files it suddenly dropped off. I'm thinking shared memory but i'm not very knowlegable on the subject.
I tried reinstalling the drivers, tried all diferent combinations of compatable and non compatable (signed) drivers until I settled on my current config. that seems to need the onboard USB1 devices to be disabled.
Now with 2 drives connected I'm getting an i/o error after transfering files.
Transfer Speeds: 5 tests aprox 700MB file
1- single drive: G - C 0:48 sec.
2- 2 drives C - G 1:24
3- 2 dives G - I (transfering between 2 externals) 0:20 sec into transfer i/o error
4- single drive: G - C 1:50
5- " " : C - G 2:35
The best time (test #1) is under 14Mb/sec nowhere close to 480Mbps. I would be happy with 100Mb.
Thanks
