Need good disk dump utility

I'm currently using Anadisk to dump disks into image files. The problem is, Anadisk, like 22disk, is retarded. If it hits an error it skips the sector but does not put a blank sector in the image file. You have the option of placing a sector header before each sector, but for manipulating disk images, this is a piss poor way to mark missing sectors. Anadisk also has the annoying habit of ignoring the start and finish cylinders and merrily proceeds to read the entire disk, relegating the need to ask you what cylinders you want dumped superfluous. Is there anything in Linux that will dump a disk image and put blank space where bad sectors are? It's not certain if dd does this. I'm sick of the crap programming of others. Must I write *EVERYTHING* myself? -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]