Thanks, is there anything I can do for using that Flashdrive with parted or is it impossible?
2011/2/11 Curtis Gedak <ged...@gmail.com> > Carlos, > > Using the equations noted in the probe_partition_for_geom() method in the > parted file libparted/labels/dos.c, I ran the calculations using the values > from the MBR you provided. > > Variable Description / Calculation Value > c Starting cylinder 1 > h Starting head 0 > s Starting sector – 1 = 0 > a Starting LBA 8,064 > C Ending cylinder 967 > H Ending head 16 > S Ending Sector – 1 = 16 > A Ending LBA 7,806,975 > a_ = a – s = 8,064 > A_ = A – S = 7,806,959 > denum = c * H – C * h = 16 > a_ * H = 129,024 > A_ * h = 0 > cyl_size = (a_ * H – A_ * h) / denum = 8,064 > cyl_size * denum = 129,024 > a_ * H – A_ * h 129,024 > head_size1 = (a_ – (c * cyl_size)) / h = n/a > head_size2 = (A_ – (C * cyl_size)) / H = 566 > heads1 = cyl_size / head_size1 = n/a > heads2 = cyl_size / head_size2 = 14 > > > Assuming my calculations are correct, a head_size of 566 sectors was > determined. This is the number of sectors that would pass under a single > disk head in a single rotation of the disk. Unfortunately this value is too > large for the MBR specification (range is 1 to 63 sectors), and hence the > partition table on your disk device is indeed invalid. > > > I agree with Brian C. Lane that it would better if parted/libparted were to > cleanly indicate that the partition table was invalid as opposed to throwing > a stack trace. > > > > Regards, > Curtis Gedak > (Maintainer of GParted) > > > REFERENCES: > Libparted function probe_partition_for_geom() in file dos.c: > > http://git.debian.org/?p=parted/parted.git;a=blob;f=libparted/labels/dos.c;h=578180bc6658d5f4e0812d5976a1499bc95c8d9b;hb=HEAD#l595 > > MBR Specification: > http://en.wikipedia.org/wiki/Master_boot_record > >
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