Messages in this thread | | | Date | Mon, 15 Nov 1999 09:44:03 +0000 (GMT) | From | Gary Benson <> | Subject | Re: Complete system hang bug report |
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Hi,
I tried using isosize, and that caused the machine to hang as before.
Gary
> Gary, > With regards to your linux-kernel report, your "dd" command may be > a little under specified. This in itself should _not_ cause your system > to hang. > > A utility called "isosize" will tell you the actual length of an iso9660 > file system. Seen from the SCSI perspective (about which I am more > familiar than IDE) that isosize length will usually be a few blocks less > than is reported by SCSI's READ CAPACITY command. Trying to read > those last few blocks can cause an IO error (but not a lockup). Also the > block size of a CDROM iso9660 fs is usually 2048 bytes and should > be specified to "dd". [Some drives have a jumper selecting between > 512 and 2048 byte blocks.] > > Isosize is available in several distros and in the cdrecord package. > > Example: > # isosize /dev/hdc > ... 252837888 bytes > > Therefore number of 2048 bytes blocks is 123456 > and the "dd" becomes > # dd if=/dev/hdc of=isi.img bs=2048 count=123456 > > > Doug Gilbert > >
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