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In my pc had a 120 Gb disk, but buy a new one and change it for a 160 Gb, the latter 3.0r1a installed Debian, and everything was going well, when after a few days the grub I mark the "ERROR 5 "and will not let me enter Debian, someone who knows or has reason this idea that I would explain in great favor, and if I get an even better solution.
Hello, on the basis that I do not have much idea of linux, I found this message (searching google) and if the error that you have something to do with the text, can be a problem that the bios is not able to recognize the full capacity of the disc
5: "Disk geometry error"
This error is returned when a read is attempted at a linear block address beyond the end of the BIOS translated area. This generally happens if your disk is larger than the BIOS can handle (512MB for (E) IDE disks on older machines or larger than 8GB in general).
We are talking about a problem that could be related to plates that are unable to recognize high-capacity hard disk, or at least recognize over 127 GB but the disc has more capacity.
Check Web motherboard manufacturer to determine if a BIOS upgrade higher than you have, systems supports 48 bit LBA. Follow the procedure which the motherboard manufacturer provides for updating the BIOS.
Once confirmed that the BIOS supports drives over 137 GB, continues with the updated operating system support for these units.
As I say, not too much of Linux, but for Windows, also need to install an additional patch to be accorded the full capacity.
I feel the whole roll and I hope that you serve.
I think you should put the /boot partition at the beginning (partition 1) of one drive or the other. Grub has some limitations on how far it can "see" and I think /dev/sdb7 may be out of range.
you've had some problems with Grub on your system, but in every case of problems with Grub that I am aware of the root cause is bad hardware or mis-application/operator error. It's good to know that Grub can see so deeply into the filesystem. Still, the value of having a separate /boot partition is pretty much wasted on placing it so far into the drive and on a logical partition.