Issues resolved. Not usb bricked as I feared Please read the original post (below) and then the summary of this thread with the eventually found solution at the bottom of this post. Special thanks to: Rastaman-FB and danfrance for all their help. Fabolous (Moderator) for the thread title change. [OP] Searched for hours and been in live chat a number of times but can not find specific solution. I wanted to install the HD rom so I partitioned my sdcard (successfully, to ext3 1.5gb) and started wiping via ClockworkMod recovery. Now I can not mount my sdcard - "E:Can't mount /dev/blocl/mmcblk0 (or /dev/block/mmcblk0p1) (invalid argument) Error mounting SDCARD:!" When I reboot, it just bootloops at black screen with blue/grey animated "android" text. WinXP will detect my device via adb (when in recovery) but can't see the sdcard. I had never used fastboot, so I am not sure if I am typing commands correctly. I think this is all in my sig strip apart from the device is now S-off. Htc Desire 2.2 GSM * Uk 3 network * 8gb class2 sdcard * Bravo pvt1 ship S-off Alpharev * Clockwork 184.108.40.206 * HBOOT 0.93.0001 * Any help would be very much appriciated. I hope I haven't missed an obvious or relavent thread. Tried sdcard from Nokia6500 but Desire won't mount that either. Will be in the chatroom and online for a few hours if anybody can help. When I go into fastboot and plug in my usb, I do get "FASTBOOT USB" come up, so why would cmd "fastboot devices" not detect my phone? In recovery, cmd "adb devices" detects it. cmd's tried adb devices List of devices attached HT05********* recovery adb shell # su su /sbin/sh: su: not found Thread summary I believe I took mostly wrong turns along the way. Hopefully this will work for you first time and save you a lot of hassle. It appears that my issues were not as serious as first thought and the actual solution was not that complicated to rectify. If I cut the thread right down, all that was required was a reformat of the sdcard and my Windows XP laptop needed the usb drivers uninstalling/re-installing. Solution If your phone is stuck in a bootloop at the booting animation stage (NOT the first splash screen image), then remove the battery and the sdcard. Place the sdcard in a sdcard reader. If it is ok and all your files are still there, copy them to your computer and reformat it just to rule out the sdcard being one of the problems. If it is not accessible or the files are not visible, then sorry (as far as I know) your files are lost and reformating is necessary. The only comforts you can take from this are that hopefully you had quite a recent backup on your computer and you now know you have found one of the issues. To reformat the sdcard, you can use the recommended gparted live tool - here. To uninstall and re-install the usb drivers for a Windows XP machine, follow post #77, it is a reply to post #76. If none of this works for you or you have any questions, do not despair, there are lot of other great tips and suggestions in the rest of this thread. If you still have not got your phone fully functioning after reading the whole thread then just explain your specific problem and we will try and help.