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I've downloaded a KNOPPIX cd and burned it onto a cd via cdrecord (k3b having recently evolved to |
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brain death). The command was |
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cdrecord dev=/dev/hdc KNOPPIX_V3.9-2005-05-27-EN.iso |
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The sha1sum of the downloaded image is |
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51294cb7439a127efd36f819f636208163988972, which is what it's supposed to |
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be. |
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The cd boots, but something seems wrong ('ls /etc' hangs forever, and |
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segfaulted once). So, maybe the burning was not right. I tried |
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$ cat /dev/hdc|sha1sum |
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cat: /dev/hdc: Input/output error |
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8d792624cfe365a1b8ee1e9f06fe3520c28d91cc - |
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Then, |
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$ dd if=/dev/hdc of=knoppix.iso |
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dd: reading `/dev/hdc': Input/output error |
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1425088+0 records in |
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1425088+0 records out |
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|
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$ sha1sum knoppix.iso |
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8d792624cfe365a1b8ee1e9f06fe3520c28d91cc knoppix.iso |
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Last, I followed Zac Medico's suggestion in the "md5sum error" thread: |
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$ readcd dev=/dev/hdc sectors=0-$(isoinfo -d -i /dev/cdrom | grep |
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"Volume size is:" | grep -o "[0-9]*$") f=- | sha1sum |
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Read speed: 7042 kB/s (CD 40x, DVD 5x). |
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Write speed: 2818 kB/s (CD 16x, DVD 2x). |
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Capacity: 356298 Blocks = 712596 kBytes = 695 MBytes = 729 prMB |
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Sectorsize: 2048 Bytes |
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Copy from SCSI (1,0,0) disk to file '-' |
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end: 356296 |
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addr: 356296 cnt: 84 |
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Time total: 160.792sec |
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Read 712592.00 kB at 4431.8 kB/sec. |
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51294cb7439a127efd36f819f636208163988972 - |
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|
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So, "there is order in this madness". |
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|
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Can someone explain the meaning of this? |
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|
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|
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Jorge Almeida |
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-- |
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gentoo-user@g.o mailing list |
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