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This is the comment you were replying to, attached to the article System hangs while accessing USB 2.0 disks:
#8 Re: System hangs while accessing USB 2.0 disks Posted by rmcgowan (24.6.xx.xx) on Mon 26 Dec 2005 at 08:41 Well, I got lucky. Here's the low down. I downloaded and compiled kernel 2.6.14.4, the latest stable version as of last week. In the 'make xconfig' session, I did not change anything from the installed kernel config defaults, I just saved the configuration and exited. I used the Debian kernel-package to build a .deb file and installed using dpkg. The reboot failed. The pertinent parts of the error message were 'not syncing' and 'unable to mount root fs on unknown-block(0,0). The result of a Google search on this error was the discovery that there was no 'initrd.img' for the new kernel. Creating one resolved the boot problem. I'm now able to run at least 4 concurrent I/O streams from the USB disk, one of which was a couple of GB file, which ran for about 10 minutes before I killed it (the original problem manifested within 2 or 3 minutes). So, it looks like the system hang problem is fixed. And, as a by product, no more 'APIC error on CPU# ...' either.
Well, I got lucky. Here's the low down.
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