[Root] Use your phone as a BOOTABLE CDROM - OnePlus 3T Themes, Apps, and Mods

CD Switcher requires [root].
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If you are into IT or cautious or ever had a drive die, you know that sometimes you can't trust a hard drive. Need to resize a partition but can't do it while the system is running? Want a clean virus scan? We all need a good boot disk sometimes and now you can carry a bunch on your phone !
Like DriveDroid and similar products, this uses the gadget driver in the Linux kernel. This updated version should work on more devices and custom ROMs, but has had very little testing. It's Alpha-ware and I'll add more features later.
Install CD Switcher APK (yes, I wrote it) from here:
https://drive.google.com/file/d/1ZdSYIhs7pq8IrOZ4NBX4dzPSYP5tdeIh/view?usp=drivesdk
Now tap on any ISO file. It can be inside an email or on the web and it will download it. (Unfortunately, this is how it works with the OOS file manager, meaning it makes an extra copy, so using FX, pictured, is recommended). The system will ask how to open it. Select CD switcher and 'Always' and grant root when it asks.
The DriveDroid APK doesn't work on stock OOS. I've booted many CDs with this tool. You can change CDs with just a tap. Have fun with your 128GB!
EDIT: New version using better methods doesn't rely on OOS init.

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Sweet! I have always wanted to be able to do this but I have not been able to ever get drivedroid to work! I can't wait to try it out and not have to carry around more than my phone and a usb cable

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knightrider64 said:
Sweet! I have always wanted to be able to do this but I have not been able to ever get drivedroid to work! I can't wait to try it out and not have to carry around more than my phone and a usb cable
Click to expand...
Click to collapse
I've heard drivedroid works with other kernels but the UI is a nightmare so I would still rather use this. Let me know if you have any issues with it.
Sent from my ONEPLUS A3000 using Tapatalk

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Great app, works fine. But how do you umount the iso?

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Any chance to get vhd's to work? I have an external hard drive that boots CDs and vhd's. Would be great to have it all on my phone :good:

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thomas_pieps said:
Great app, works fine. But how do you umount the iso?
Click to expand...
Click to collapse
You can't. Not really any need to since it mounts read only. You can unplug it at any time.
Sent from my ONEPLUS A3000 using Tapatalk

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domsch1988 said:
Any chance to get vhd's to work? I have an external hard drive that boots CDs and vhd's. Would be great to have it all on my phone :good:
Click to expand...
Click to collapse
You could do a raw disk image such as created by "dd" (and name it with an ISO extension even though it isn't), but I'd have to do more work to enable write access. All the work is done by the kernel which wants a raw disk image.
Sent from my ONEPLUS A3000 using Tapatalk

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Can whatever it writes to the system be unwritten? Would I be able to take and OTA update after using this if I removed it and the ISO files?

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stevenswall said:
Can whatever it writes to the system be unwritten? Would I be able to take and OTA update after using this if I removed it and the ISO files?
Click to expand...
Click to collapse
No! Full OTA only. Its not about the changes made. Your /system partition is on an ext4 filesystem which is journalled. Every write changes metadata and the journal. Incremental OTAs generally will change data block by block, and there is no telling what blocks it will change. The ISO files and APK aren't on the system partition and won't affect anything.
There is an older version of this that doesn't write to the system partition at all, but you have to set the ISO with the cable unplugged and then plug in your USB. The moment you change USB in any way, such as turning on MTP, the oneplus init scripts will revert the configuration back to the default USB drivers. Turning the USB drivers ISO into a symlink is what lets it survive MTP being turned on and is minimally invasive and revertable, but it still modfies blocks in the filesystem. If you want the older/safe one I can put up the link, just know that MTP and this can't be on at once with the old one since OnePlus has a bug that keeps turning off MTP (same thing that reverts the ISO).
I'm actually pretty sure it will be safe, but I personally wouldn't chance it and am recommending against it. The best bet would be to make a Magisk module, but I'm planning on replacing Magisk with something of my own, so I can't really spend time on such a solution. Since you've already rooted, using full OTAs over incremental is generally the method most people use anyway and will be totally safe. A system update will set your ISO back to USB drivers, just set your new ISO with the app again and it will be fine.
Sent from my ONEPLUS A3000 using Tapatalk

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Thanks! Why not publish it as open source on github and put it on F-Droid?

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Is it possible to have a windows 10 iso to boot in uefi mode with this tool?

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installed the app but can't see it in app drawer can't open it!
my mistake.
i tested it and it works but without boot option. can u enable the option to write on the image? not read only?
and i tried to mount a windows installation iso and it doesnt work properly. i want to connect the phone to usb and boot from it to install
windows and other operating systems... and use disk tools etc
what can i\u do? thanks!!!

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How can I use this on AOSPA Because you say it only works with the OnePlus File Manager. I got the apk for that but I cant install it because it conflicts with the current file explorer from AOSPA built in, I cant remove it with System App Uninstaller. Any solutions?

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lindahl85 said:
Is it possible to have a windows 10 iso to boot in uefi mode with this tool?
Click to expand...
Click to collapse
Yes

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DJArielLB said:
my mistake.
i tested it and it works but without boot option. can u enable the option to write on the image? not read only?
and i tried to mount a windows installation iso and it doesnt work properly. i want to connect the phone to usb and boot from it to install
windows and other operating systems... and use disk tools etc
what can i\u do? thanks!!!
Click to expand...
Click to collapse
An ISO is read only. It can't be written to. I have mounted a Windows install ISO just fine. What was the error?

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R3dRacer said:
How can I use this on AOSPA Because you say it only works with the OnePlus File Manager. I got the apk for that but I cant install it because it conflicts with the current file explorer from AOSPA built in, I cant remove it with System App Uninstaller. Any solutions?
Click to expand...
Click to collapse
Actually, it only worked on OnePlus phones because it needed the USB setup used on OnePlus.
Somehow this thread got unmarked and I missed all the responded. Sorry! The good news is that I have a new Alpha version that should work on non-OnePlus devices and ROM's. This one doesn't touch the system partition either.
https://drive.google.com/file/d/1ZdSYIhs7pq8IrOZ4NBX4dzPSYP5tdeIh/view?usp=drivesdk

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j03x2 said:
Thanks! Why not publish it as open source on github and put it on F-Droid?
Click to expand...
Click to collapse
Source is on my Github

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Wait so how do I use this? I selected to open the ISO with the app, and I granted root, and it said iso location, etc.
I plugged it into my PC via USB but I'm not seeing a bootable option...
Edit now I see a usb item but it tells me grub incorrect filesystem or something
I'm trying an Ubuntu iso

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NateDev said:
Wait so how do I use this? I selected to open the ISO with the app, and I granted root, and it said iso location, etc.
I plugged it into my PC via USB but I'm not seeing a bootable option...
Edit now I see a usb item but it tells me grub incorrect filesystem or something
I'm trying an Ubuntu iso
Click to expand...
Click to collapse
If you got to rub that it's actually booting off of the phone. It's up to the iso manufacturer to make sure that you can boot off a USB CD-ROM. So the phone is working, it's something in the iso that's messed up. Try a different ISO image

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It doesn't seem to work on OOS beta 25 - app opens, reads something, tries to change usb mode (I can hear disconnect and connect sounds on Windows), returns to MTP and then closes itself.
Is this because of system being beta or custom kernel?
Code:
04-24 18:22:07.049 5923 9743 I ActivityManager: START u0 {act=android.intent.action.VIEW dat=content://pl.solidexplorer2.files/storage/emulated/0/Documents/ISO/ubuntu-18.04-beta2-desktop-amd64.iso typ=application/x-iso9660-image flg=0x10000001 cmp=systems.eddon.android.cdromswitcher/.MainActivity (has extras)} from uid 10091 pid 11517
04-24 18:22:07.065 560 560 E ANDR-PERF-MPCTL: hint lookup failed
04-24 18:22:07.067 5923 9743 E ANDR-PERF-JNI: com_qualcomm_qtiperformance_native_perf_io_prefetch_start
04-24 18:22:07.079 5923 9743 E ANDR-PERF-JNI: gIOPHAl initialized
04-24 18:22:07.079 5923 9743 E ANDR-PERF-JNI: gIOPHAl calling iopstart
04-24 18:22:07.079 559 559 E ANDR-IOP: IOP HAL: Received pkg_name = systems.eddon.android.cdromswitcher pid = -1
04-24 18:22:07.094 5923 6352 D RestartProcessManager: Duration is too short, ignore : 861 in pl.solidexplorer2
04-24 18:22:07.097 560 560 E ANDR-PERF-MPCTL: hint lookup failed
04-24 18:22:07.097 5923 6352 D RestartProcessManager: Update Total Launch Times :systems.eddon.android.cdromswitcher
04-24 18:22:07.097 5923 6352 D RestartProcessManager: updateSelf : systems.eddon.android.cdromswitcher, size : 13
04-24 18:22:07.098 5923 6352 D RestartProcessManager: Increase Total Launch Time : systems.eddon.android.cdromswitcher, times : 6, index : 12
04-24 18:22:07.098 5923 6352 D RestartProcessManager: Last Running Package : systems.eddon.android.cdromswitcher , start time 1524586927097
04-24 18:22:07.132 11826 12327 D TextDisplay: URL: /storage/emulated/0/Documents/ISO/ubuntu-18.04-beta2-desktop-amd64.iso
04-24 18:22:07.132 11826 12327 D TextDisplay: Using scheme content
04-24 18:22:07.133 11826 12327 D TextDisplay: Using filename: /storage/emulated/0/Documents/ISO/ubuntu-18.04-beta2-desktop-amd64.iso
04-24 18:22:07.133 11826 12327 I writeToSystem: Starting root commands
04-24 18:22:07.137 11826 12327 I suwait : Aquiring root!
04-24 18:22:07.162 468 12330 D Magisk : su: request from client: 22
04-24 18:22:07.162 468 12330 D Magisk : su: request from uid=[10176] (#1)
04-24 18:22:07.163 468 12330 D Magisk : su_db: query policy=[2]
04-24 18:22:07.164 468 12330 D Magisk : su: waiting child: [12331]
04-24 18:22:07.164 12331 12331 D Magisk : su: child process started
04-24 18:22:07.166 12331 12331 D Magisk : su: argc=[3]
04-24 18:22:07.166 12331 12331 D Magisk : su: argv[0]=[su]
04-24 18:22:07.166 12331 12331 D Magisk : su: argv[1]=[-]
04-24 18:22:07.166 12331 12331 D Magisk : su: argv[2]=[root]
04-24 18:22:07.166 12331 12331 D Magisk : su: pts_slave=[]
04-24 18:22:07.167 12331 12331 D Magisk : su: use namespace of pid=[12328]
04-24 18:22:07.186 11517 11535 D OpenGLRenderer: endAllActiveAnimators on 0xbb759b00 (SEGridView) with handle 0xd1a199a0
04-24 18:22:07.200 6682 6682 I GoogleInputMethod: onFinishInput() : Dummy InputConnection bound
04-24 18:22:07.200 6682 6682 I GoogleInputMethod: onStartInput() : Dummy InputConnection bound
04-24 18:22:07.204 5923 6361 I ActivityManager: Displayed systems.eddon.android.cdromswitcher/.MainActivity: +99ms
04-24 18:22:07.394 12332 12332 W ADebug : Failed to get property persist.sys.media.traces
04-24 18:22:07.405 12332 12332 D AndroidRuntime: >>>>>> START com.android.internal.os.RuntimeInit uid 0 <<<<<<
04-24 18:22:07.580 12189 12262 I NetworkController.MobileSignalController(2): showDisableIcon:false
04-24 18:22:07.798 5923 6541 I SettingsState: [PERSIST START]
04-24 18:22:07.850 5923 7879 I OpenGLRenderer: Initialized EGL, version 1.4
04-24 18:22:07.850 5923 7879 D OpenGLRenderer: Swap behavior 2
04-24 18:22:08.069 12332 12332 D AndroidRuntime: Calling main entry com.android.commands.am.Am
04-24 18:22:08.099 12332 12332 D AndroidRuntime: Shutting down VM
04-24 18:22:08.138 11826 12327 I suwait : I am root
04-24 18:22:08.138 11826 12327 D powrite-send: cat /sys/class/android_usb/android0/functions
04-24 18:22:08.158 5923 6524 D DebugKeepScreenOn: Acquiring screen wakelock due to Window{a0aa7c u0 Toast}
04-24 18:22:08.340 11826 12327 I powrite#: mtp,mass_storage,hid
04-24 18:22:08.340 11826 12327 D powrite-send: echo 0 >/sys/class/android_usb/android0/enable
04-24 18:22:08.441 7726 12141 E MtpServer: request read returned -1, errno: 5
04-24 18:22:09.077 560 625 E ANDR-PERF-OPTSHANDLER: perf_lock_rel: updated /sys/class/scsi_host/host0/../../../clkscale_enable with 1
04-24 18:22:09.077 560 625 E ANDR-PERF-OPTSHANDLER: return value 2
04-24 18:22:09.541 11826 12327 D powrite-send: echo '/storage/emulated/0/Documents/ISO/ubuntu-18.04-beta2-desktop-amd64.iso' >/sys/class/android_usb/android0/f_mass_storage/lun/file
04-24 18:22:09.743 11826 12327 D powrite-send: cat /sys/class/android_usb/android0/f_mass_storage/lun/file
04-24 18:22:09.945 11826 12327 D powrite-send: echo 1 >/sys/class/android_usb/android0/enable
04-24 18:22:10.123 5923 5923 W WindowManager: removeWindowToken: Attempted to remove non-existing token: [email protected]
04-24 18:22:10.146 6665 6665 D HeadsetPhoneState: Enter onSignalStrengthsChanged
04-24 18:22:10.146 11826 12327 I writeToSystem: All DONE! SUCCESS!
04-24 18:22:10.146 6665 6665 D HeadsetPhoneState: Exit onSignalStrengthsChanged
04-24 18:22:10.150 5923 6549 V UsbDeviceManager: USB UEVENT: {SUBSYSTEM=android_usb, SEQNUM=22690, ACTION=change, USB_STATE=DISCONNECTED, DEVPATH=/devices/virtual/android_usb/android0}
04-24 18:22:10.151 12189 12262 I NetworkController.MobileSignalController(1): showDisableIcon:false
04-24 18:22:10.238 5923 6549 V UsbDeviceManager: USB UEVENT: {SUBSYSTEM=android_usb, SEQNUM=22691, ACTION=change, USB_STATE=CONNECTED, DEVPATH=/devices/virtual/android_usb/android0}
04-24 18:22:10.240 5923 6359 D UsbDeviceManager: broadcasting Intent { act=android.hardware.usb.action.USB_STATE flg=0x31000000 (has extras) } extras: Bundle[{host_connected=false, connected=true, unlocked=false, config_changed=false, mtp=true, configured=false}]
04-24 18:22:10.263 7726 7726 W libc : Unable to set property "sys.usb.ffs.mtp.ready" to "1": error code: 0x18
04-24 18:22:10.264 5923 9743 I UsbDeviceManager: isUsbDataUnlocked: 0
04-24 18:22:10.310 5923 6549 V UsbDeviceManager: USB UEVENT: {SUBSYSTEM=android_usb, SEQNUM=22692, ACTION=change, USB_STATE=CONFIGURED, DEVPATH=/devices/virtual/android_usb/android0}
04-24 18:22:10.311 5923 6359 D UsbDeviceManager: broadcasting Intent { act=android.hardware.usb.action.USB_STATE flg=0x31000000 (has extras) } extras: Bundle[{host_connected=false, connected=true, unlocked=false, config_changed=false, mtp=true, configured=true}]
04-24 18:22:10.338 7726 7726 D MtpService: starting MTP server in MTP mode
04-24 18:22:10.534 5923 6524 D DebugKeepScreenOn: Releasing screen wakelock, obscured by Window{e3dd695 u0 systems.eddon.android.cdromswitcher/systems.eddon.android.cdromswitcher.MainActivity}
04-24 18:22:10.581 14627 14735 I PlayCommon: [373] com.google.android.play.b.h.e(263): Preparing logs for uploading
04-24 18:22:10.582 14627 14735 I PlayCommon: [373] com.google.android.play.b.h.e(267): No file ready to send
04-24 18:22:12.194 5923 6352 D RestartProcessManager: increase duration : 5090 for systems.eddon.android.cdromswitcher
04-24 18:22:12.196 560 560 E ANDR-PERF-MPCTL: hint lookup failed
04-24 18:22:12.196 5923 6352 D RestartProcessManager: Update Total Launch Times :pl.solidexplorer2
04-24 18:22:12.196 5923 6352 D RestartProcessManager: updateSelf : pl.solidexplorer2, size : 13
04-24 18:22:12.196 5923 6352 D RestartProcessManager: Increase Total Launch Time : pl.solidexplorer2, times : 14, index : 12
04-24 18:22:12.196 5923 6352 D RestartProcessManager: Last Running Package : pl.solidexplorer2 , start time 1524586932196