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The Ftape-FAQ Johan De Wit, <jo@correct.nl> v0.2, 07 december 2025 This is a very incomplete attempt to create a FAQ for the Ftape Floppy Tape Device Driver. Any suggestions, remarks ... that could improve this FAQ are welcome indeed. The most recent version of this FAQ can be found at <http://www.correct.nl/~ftape/> 1. A Word From The Maintainer Of Ftape. 2. "Compiling and installing Ftape" related questions ! 2.1 What Ftape version should I use? 2.2 I'm having problems getting my XYZ drive to run under the 2.0.xx kernel with the built-in driver. How do I fix this? 2.3 I'm running Linux/SMP and the system just freezes when trying to access the Ftape devices! 2.4 Why does depmod complain about "undefined symbols"? 2.5 "insmod" says the kernel version is wrong 2.6 "insmod" says that kernel 1.2.0 and 1.2.0 differ 2.7 Trying to compile Ftape gives me the error "modversions.h: no such file or directory" 2.8 What is this versioned symbols stuff anyway? 2.9 I seem to be getting sftape instead of zftape. When I run "ftmt status" command, I get output that the Ftape docs says corresponds to sftape ( /dev/qft0: Invalid argument ). Why? 2.10 My Ditto DASH/FC-20/Exabyte Accelerator card works under Microsoft Windows, but I get a drive not found type of error in /var/log/messages when trying to use it under Linux. 2.11 Ftape DMA transfers gives ECC errors 2.12 Help! I'm getting 'dmaalloc() failed' in my syslog file. 2.13 Syslogd works overtime when running Ftape 2.14 How do I change the trace-level? 2.15 I'm having problems with Ftape. I'm using the latest version of Ftape from the Ftape Home Page and believe that I've located a real bug. What should I do? 3. "Using Ftape" related questions ! 3.1 How fast is Ftape ? 3.2 When I write to some of my tapes, they seem to spend a lot of time "shoe-shining," or repositioning instead of streaming. Is something wrong with my system? 3.3 Do I have to reboot to the DOS world to format tapes? 3.4 Is it possibly to format Ditto 2GB tapes with ftape? 3.5 Is it possibly to format Ditto Max or Max Pro tapes with ftape? 3.6 Ftape detects more bad sectors than DOS on QIC-3020 tapes 3.7 Is it ok that I'm not hearing the tape move when I do a fsf or a bsf with mt? 3.8 Why does my XYZ backup program complain about "Invalid argument" errors? 3.9 I/O errors and FDC - some explanations. 3.10 Why do I get "/dev/qft0: No such device" errors? 3.11 I get "device busy" when I make multiple backups on a tape using some script. 3.12 How do I "..." with tar? 3.13 What block-size should I use with tar ? 3.14 Where can I find the tar/mt/cpio/dd binaries - sources - manpages? 3.15 If I use tapers compression, is it a bad idea to use the compression with zftape, or would it be better to not use tapers compression, and let zftape do it? 3.16 How does zftape compression compare to say gzip -9? 3.17 I don't trust compression, but hear that the sftape interface is going away. What should I do? 3.18 Ftape says "This tape has no 'Linux raw format" 3.19 Can I exchange tapes with someone using DOS? 3.20 How does `mt eom' work when you've started overwriting a tape in the middle? 3.21 When I made backups before using taper, under the 2.0.29 ftape my drive didn't support fsf, under the new zftape it does, why would this be, and what exactly is fsf ? 3.22 What exactly is the difference between ftape, and zftape? 3.23 What is the difference between a rewinding, and non rewinding drive? 3.24 Can someone tell me how to use mt to rewind my TR-3 drive one record using zftape record, so I can verify it? 3.25 By non-rewinding, they mean that it doesn't automatically rewind, correct? It doesn't mean that under no circumstances it will rewind, right? I tried using /dev/zqft0, and it instantly rewinds the tape. 3.26 What is the difference between what mt considers a record and what it considers a file? 3.27 Reusing tapes with zftape without reformatting the tape. 3.28 This script implements a simple contents listing for the zftape package using the "MTIOCVOLINFO" ioctl. 4. "Tape and Drivers" related questions ! 4.1 What are good makers of Travan tapes? 4.2 Where can I obtain the QIC standards? 4.3 Is the Iomega Ditto 2GB drive supported? 4.4 Is the Iomega Ditto Max drive supported? 4.5 Is the Iomega Ditto Max Pro drive supported? 5. Miscellaneous ! 5.1 How to subscribe to the Ftape Mailing List? 5.2 How to un-subscribe from the Ftape Mailing List? 5.3 Links to related information.

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